SMC PNEUMATIK VBAT20AF-RV-Q Datasheet

Booster regulator/

Series

VBA

Air tank/

Series

VBAT

Booster Regulator/Air Tank

0.3

MPa

0.3

MPa

0.3

MPa

0.3

MPa

0.6

MPa

Booster Regulator + Air Tank

Heavy

Light

Light

Compressor

Factory line

Series

VBA/VBAT

Easy installation

Low heat generation

Air-only operation

New product added to the VBA10A series!

Very little heat is
generated because
no electricity is used,
and there is no impact
on cylinders, solenoid
valves, etc.

Operation is safe
because no
electricity is used.

Simply insert the unit
in the air line.
Requires far less
space than upgrading
the compressor.

There is no need to
install dedicated
electrical wiring.

New

New

NEW

Increase factory air pressure by up to twice as much!
Air-only operation requires
no power supply, reduces
heat generation, and
allows easy installation.

Increase factory air pressure by up to twice as much!
Air-only operation requires
no power supply, reduces
heat generation, and
allows easy installation.

CAT.EUS11-96C-UK

Boost pressure

No power supply or wiring needed

• Floating piston structure (PAT. PEND)

• Grease retaining groove

∗ Except for VBA1111.

• Prevents operation failure due to foreign matter.

∗ Except for VBA1111.

Built-in mesh filter∗ at the IN port

Cylinder tube

Tie-rod guide

Air-feeding tube

VBA22A

VBA42A

Air-operated type

VBA43A

Max. operating pressure

1.6

MPa

Fourfold pressure

increase type

Booster Regulator

Series

VBA

Improved

service life

that of conventional model

Doubled

that of conventional model

Doubled

∗

• Metal noise reduced by a damper on the impact part
of the switch valve

• Exhaust noise reduced by a high-noise reduction
silencer

∗ Except for VBA1111.

Reduced

noise

that of conventional model

Doubled

Reduced by

13 dB

(A)

compared with the conventional model

Reduced by

13 dB

(A)

compared with the conventional model

Improved reliability

• Mitigates the condensation caused by cooling
during exhaust expansion.

Integrated air-feeding tube with the
main tube

Anti-condensation

1/8" gauge ports

Allows the use of standard
fittings for remote pressure
monitoring and the like.

∗ Gauge ports changed from 1/16" to 1/8".

VBA10A

VBA1111

VBA40A

VBA20A

NEW

Grease retaining
groove

Floating structure

Switching
valve

Damper

Mesh filter

Gauge port

Features 1

Operation

Body size

Set pressure

range

Handle-operated type (Direct operation)

0.2 to 1.0 MPa

0.2 to 1.6 MPa
(2.0 MPa)

0.2 to 2.0 MPa

VBA10A VBA1111

VBA20A-03 VBA22A-03

VBA42A-04VBA43A-04VBA40A-04

1/4"

3/8"

1/2"

Air-operated type (Remote operation)

0.2 to 1.0 MPa

Tank capacity (l)

Max. operating pressure (MPa)

Material

Model

VBAT10A10VBAT20A

20

Carbon steel

VBAT38A

38

1.02.0

VBAT05A

5

P. 1

Air Tank

Series

VBAT

P. 12

Perfect fit with a booster regulator

This is an air tank to which a booster regulator can be connected
compactly. It can be used alone as a tank. The pressure vessel law is
different from country to country, so as an air tank suitable to a
country needs to be confirmed.

Extensive product lineup

To meet a variety of usage environment and pressure specifications,
models are available in two materials four sizes ranging from 5 liters
to 38 liters.

Features 2

VBA

02

GN

111

1

1/4

Body size

111

4 times

Pressure increase ratio

1

Port size

02

1/4

Port sizeSymbol

Thread type

Rc

G

NPT

NPTF

Thread type

Note)

Symbol

—

F

N

T

Series

VBA1111

Option
None
Pressure gauge
Silencer
Pressure gauge, Silencer

Option

Symbol

—

G
N

GN

VBA

04

GN

40A

Port size

02
03
04

1/4
3/8
1/2

Port size

VBA10A
VBA2A
VBA4A

Applicable series

Symbol

Thread type

Rc

G

NPT

NPTF

Thread type

Note)

Symbol

—

F
N
T

Series VBA

Option
None
Pressure gauge
Silencer
High-noise reduction silencer

Note)

Pressure gauge, Silencer
Pressure gauge, High-noise reduction silencer

Note)

Option

Symbol

—

G
N

S
GN
GS

VBA1111-02

1/4, Handle-operated type
3/8, Handle-operated type
1/2, Handle-operated type
3/8, Air-operated type
1/2, Air-operated type
1/2, Max. operating pressure 1.6 MPa

Body size

10A
20A
40A
22A
42A
43A

∗ Pressure increase ratio: Twice

∗ Pressure: 2 MPa

Note) Thread type: NPT, NPTF

The SI unit type is provided for use in Japan.
This product is for use outside of Japan only
according to the new Measurement Law.

Specifications

Pressure unit on the product name
label and pressure gauge: psi

Pressure unit on the product name
label and pressure gauge: MPa

Semi-standard

Symbol

—

Z

Note)

Note) Thread types apply to the IN, OUT, and EXH ports. The gauge ports are Rc thread type.

For the G thread type, add an E at the beginning of the model number

(EVBA1111-F02).

For the NPTF thread type, add an N at the beginning of the model number (NVBA1111-T02



).

Symbol

Symbol

Note) Thread types apply to the IN,

OUT, and EXH ports of the
VBA10A and to the IN, OUT,
EXH, and gauge ports of the
VBA2



A and VBA4A. The
gauge ports of the VBA10A are
Rc thread type regardless of the
thread type indication.

Note) The high-noise reduction silencer is not available on the

VBA10A-N02 and VBA10A-T02.

1 4

VBA20A-03

VBA10A-02

VBA40A-04

VBA22A-03

VBA42A-04

VBA43A-04

10A
2A
4A

Made to Order

(For details, refer to page 11.)

VBAT05A

VBAT10A

VBAT20A

VBAT38A

VBA10A

VBA1111

VBA2A VBA4A





—

—

—







—

—





Air tank compatibility chart

Booster

regulator

Air tank

Booster Regulator

Series VBA

How to Order

Related Products/Part No.

Note) Refer to page 12 for air tanks, Best Pneumatics No. 5 for mist separators

and Best Pneumatics No. 6 for exhaust cleaners.
Refer to the separate instruction manual for the connection method.

Description

Model

Mist separator
Exhaust cleaner

For

VBA10A-02

For

VBA1111-02

For

VBA20A-03

For

VBA22A-03

AM250C-02
AMC310-03

AM450C-04, 06

AMC510-06

AM550C-06, 10

AMC610-10

For

VBA40A-04

For

VBA42A-04

For

VBA43A-04

Note 1) If the OUT pressure is higher than the set pressure by the handle, excessive pressure is exhausted from the back of the handle.
Note 2) Flow rate at IN= OUT= 0.5 MPa. The pressure varies depending on the operating conditions. Refer to “Flow Characteristics” on pages 3 and 4.

Model

Fluid

Pressure increase ratio

Pressure adjustment mechanism

Max. flow rate

Note 2)

(l/min (ANR))

Set pressure range (MPa)

Supply pressure range (MPa)

Proof pressure (MPa)

Ambient and fluid temperature

(°C)

Installation

Lubrication

Weight (kg)

Port size
(IN/OUT/EXH: 3 locations)

Pressure gauge port size
(IN/OUT: 2 locations)

VBA10A-02

VBA20A-03

VBA40A-04

VBA22A-03

VBA42A-04

VBA1111-02VBA43A-04

Compressed air

0.1 to 1.0

2 to 50 (No freezing)

Horizontal

Grease (Non-lube)

Twice

230

0.2 to 2.0

3

1/4

1/8

0.84

1000

0.2 to 1.0

1.5 1.5

0.2 to 1.0

1900 1000 1900 60

0.2 to 2.0

1600

0.2 to 1.6

Twice to 4 times

Handle-operated with relief

mechanism

Note 1)

Handle-operated with relief mechanism

Note 1)

Air-operated

Twice

3/8

1/8

3.9

1/2

1/8

3/8

1/8

1/2

1/8

8.6

3.9

8.6

3

1/4

1/16

0.98

2.4

1/2

1/8

8.6

Note 1) In the case of option GN, two pressure gauges and one silencer are included as accessories.
Note 2) KT-VBA22A-7 is a pressure gauge with fittings. (Please order two units when using with IN and OUT.)
Note 3) Only simple indication of MPA for the pressure gauges

Pressure Gauge, Silencer (When thread type is Rc or G.)

Model

Description
Pressure gauge
Silencer
High-noise reduction silencer

G
N
S

VBA43A-04

VBA43A-F04

VBA1111-02

EVBA1111-F02

VBA42A-04

VBA42A-F04

VBA22A-03

VBA22A-F03

VBA40A-04

VBA40A-F04

VBA20A-03

VBA20A-F03

VBA10A-02

VBA10A-F02

G27-20-01

AN200-02

ANA1-02

G36-10-01

AN300-03

ANA1-03

AN400-04

ANA1-04

KT-VBA22A-7

AN300-03

ANA1-03

G36-10-01

AN400-04

ANA1-04

G27-20-R1

AN200-02

—

G27-20-01

AN400-04

ANA1-04

Note 1) In the case of option GN, two pressure gauges and one silencer are included as accessories.
Note 2) KT-VBA22A-7N, KT-VBA22A-8N are pressure gauges with fittings. (Please order two units when using with IN and OUT.)
Note 3) Under the new measurement law, the pressure unit of “psi” on the pressure gauges cannot be used in Japan.
Note 4) Pressure unit of pressure gauge: psi
Note 5) Pressure unit of pressure gauge: psi and MPa
Note 6) Only simple indication of MPA for the pressure gauges

Pressure Gauge, Silencer (When thread type is NPT or NPTF.)

Model

Description
Pressure gauge ∗: no symbol

Note 6)

Pressure gauge ∗: when “-Z”

Note 4)

Silencer
High-noise reduction silencer

G

N
S

VBA10A-N02

∗

VBA10A-T02

∗

∗

: when “-Z”

VBA20A-N03

∗

VBA20A-T03

∗

∗

: when “-Z”

VBA40A-N04

∗

VBA40A-T04

∗

∗

: when “-Z”

VBA22A-N03

∗

VBA22A-T03

∗

∗

: when “-Z”

VBA42A-N04

∗

VBA42A-T04

∗

∗

: when “-Z”

VBA1111-N02
NVBA1111-T02

VBA43A-N04

∗

VBA43A-T04

∗

∗

: when “-Z”

G27-20-01

G27-P20-01

AN200-N02

—

G36-10-N01

G36-P10-N01

AN300-N03

ANA1-N03

AN400-N04

ANA1-N04

KT-VBA22A-7N
KT-VBA22A-8N

AN300-N03

ANA1-N03

G36-10-N01

G36-P10-N01

AN400-N04

ANA1-N04

G27-20-R1-X214

Note 5)

—

AN200-N02

—

G27-20-N01

G27-P20-N01

AN400-N04

ANA1-N04

Mist Separator, Exhaust Cleaner

Standard Specifications

(Rc)

(Rc)

Options/Part No.

1. System configuration

• The IN port of the booster regulator has a metallic mesh to pre-
vent dust from entering the booster regulator. However, it can-
not remove dust continuously or separate drainage. Make sure
to install a mist separator (AM series) at the inlet side of the
booster regulator.

• The booster regulator has a sliding part inside, and it generates
dust. Also, install a cleaning device such as an air filter or a
mist separator on the outlet side as necessary.

• Connect a lubricator to the outlet side, because the accumulated
oil in the booster regulator may result in a malfunction.

2. Exhaust air measures

• Provide a dedicated pipe to release the exhaust air from each
booster regulator. If exhaust air is converged into a pipe, the
back pressure that is created could cause improper operation.

• Depending on the necessity, install a silencer or an exhaust
cleaner on the exhaust port of the booster regulator to reduce
the exhausting sound.

3. Maintenance space

• Allow the sufficient space for maintenance and inspection.

Caution

Design

Booster Regulator

Series VBA

1

Related Products/Part No.

Note) Refer to page 12 for air tanks, Best Pneumatics No. 5 for mist separators

and Best Pneumatics No. 6 for exhaust cleaners.
Refer to the separate instruction manual for the connection method.

Description

Model

Mist separator
Exhaust cleaner

For

VBA10A-02

For

VBA1111-02

For

VBA20A-03

For

VBA22A-03

AM250C-02
AMC310-03

AM450C-04, 06

AMC510-06

AM550C-06, 10

AMC610-10

For

VBA40A-04

For

VBA42A-04

For

VBA43A-04

Note 1) If the OUT pressure is higher than the set pressure by the handle, excessive pressure is exhausted from the back of the handle.
Note 2) Flow rate at IN= OUT= 0.5 MPa. The pressure varies depending on the operating conditions. Refer to “Flow Characteristics” on pages 3 and 4.

Model

Fluid

Pressure increase ratio

Pressure adjustment mechanism

Max. flow rate

Note 2)

(l/min (ANR))

Set pressure range (MPa)

Supply pressure range (MPa)

Proof pressure (MPa)

Ambient and fluid temperature

(°C)

Installation

Lubrication

Weight (kg)

Port size
(IN/OUT/EXH: 3 locations)

Pressure gauge port size
(IN/OUT: 2 locations)

VBA10A-02

VBA20A-03

VBA40A-04

VBA22A-03

VBA42A-04

VBA1111-02VBA43A-04

Compressed air

0.1 to 1.0

2 to 50 (No freezing)

Horizontal

Grease (Non-lube)

Twice

230

0.2 to 2.0

3

1/4

1/8

0.84

1000

0.2 to 1.0

1.5 1.5

0.2 to 1.0

1900 1000 1900 60

0.2 to 2.0

1600

0.2 to 1.6

Twice to 4 times

Handle-operated with relief

mechanism

Note 1)

Handle-operated with relief mechanism

Note 1)

Air-operated

Twice

3/8

1/8

3.9

1/2

1/8

3/8

1/8

1/2

1/8

8.6

3.9

8.6

3

1/4

1/16

0.98

2.4

1/2

1/8

8.6

Note 1) In the case of option GN, two pressure gauges and one silencer are included as accessories.
Note 2) KT-VBA22A-7 is a pressure gauge with fittings. (Please order two units when using with IN and OUT.)
Note 3) Only simple indication of MPA for the pressure gauges

Pressure Gauge, Silencer (When thread type is Rc or G.)

Model

Description

Pressure gauge
Silencer
High-noise reduction silencer

G
N
S

VBA43A-04

VBA43A-F04

VBA1111-02

EVBA1111-F02

VBA42A-04

VBA42A-F04

VBA22A-03

VBA22A-F03

VBA40A-04

VBA40A-F04

VBA20A-03

VBA20A-F03

VBA10A-02

VBA10A-F02

G27-20-01

AN200-02

ANA1-02

G36-10-01

AN300-03

ANA1-03

AN400-04

ANA1-04

KT-VBA22A-7

AN300-03

ANA1-03

G36-10-01

AN400-04

ANA1-04

G27-20-R1

AN200-02

—

G27-20-01

AN400-04

ANA1-04

Note 1) In the case of option GN, two pressure gauges and one silencer are included as accessories.
Note 2) KT-VBA22A-7N, KT-VBA22A-8N are pressure gauges with fittings. (Please order two units when using with IN and OUT.)
Note 3) Under the new measurement law, the pressure unit of “psi” on the pressure gauges cannot be used in Japan.
Note 4) Pressure unit of pressure gauge: psi
Note 5) Pressure unit of pressure gauge: psi and MPa
Note 6) Only simple indication of MPA for the pressure gauges

Pressure Gauge, Silencer (When thread type is NPT or NPTF.)

Model

Description

Pressure gauge ∗: no symbol

Note 6)

Pressure gauge ∗: when “-Z”

Note 4)

Silencer
High-noise reduction silencer

G

N
S

VBA10A-N02

∗

VBA10A-T02

∗

∗

: when “-Z”

VBA20A-N03

∗

VBA20A-T03

∗

∗

: when “-Z”

VBA40A-N04

∗

VBA40A-T04

∗

∗

: when “-Z”

VBA22A-N03

∗

VBA22A-T03

∗

∗

: when “-Z”

VBA42A-N04

∗

VBA42A-T04

∗

∗

: when “-Z”

VBA1111-N02
NVBA1111-T02

VBA43A-N04

∗

VBA43A-T04

∗

∗

: when “-Z”

G27-20-01

G27-P20-01

AN200-N02

—

G36-10-N01

G36-P10-N01

AN300-N03

ANA1-N03

AN400-N04

ANA1-N04

KT-VBA22A-7N
KT-VBA22A-8N

AN300-N03

ANA1-N03

G36-10-N01

G36-P10-N01

AN400-N04

ANA1-N04

G27-20-R1-X214

Note 5)

—

AN200-N02

—

G27-20-N01

G27-P20-N01

AN400-N04

ANA1-N04

Mist Separator, Exhaust Cleaner

Standard Specifications

(Rc)

(Rc)

Options/Part No.

1. System configuration

• The IN port of the booster regulator has a metallic mesh to pre­vent dust from entering the booster regulator. However, it can­not remove dust continuously or separate drainage. Make sure
to install a mist separator (AM series) at the inlet side of the
booster regulator.

• The booster regulator has a sliding part inside, and it generates
dust. Also, install a cleaning device such as an air filter or a
mist separator on the outlet side as necessary.

• Connect a lubricator to the outlet side, because the accumulated
oil in the booster regulator may result in a malfunction.

2. Exhaust air measures

• Provide a dedicated pipe to release the exhaust air from each
booster regulator. If exhaust air is converged into a pipe, the
back pressure that is created could cause improper operation.

• Depending on the necessity, install a silencer or an exhaust
cleaner on the exhaust port of the booster regulator to reduce
the exhausting sound.

3. Maintenance space

• Allow the sufficient space for maintenance and inspection.

Caution

Design

Booster Regulator

Series VBA

2

12

11

10

9

8

7

6

5

4

3

2

1
0

Charge time per 10 liters t (s)

1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2.0

Pressure increase ratio P2/P

1

1.0

0.8

0.6

0.4

0.2

Outlet pressure (MPa)

0 200 400 600 800 1000 1200

Outlet air flow (l/min (ANR))

1.04

1.02

1.

0

0.98

0.96

0.94

Outlet pressure (MPa)

0 0.4 0.5 0.6 0.7 0.8 0.9 1

Inlet pressure (MPa)

1.0

0.8

0.6

0.4

0.2

Outlet pressure (MPa)

0 500 1000 1500 2000

Outlet air flow (l/min (ANR))

1.04

1.02

1.0

0.98

0.96

0.94

Outlet pressure (MPa)

0 0.4 0.5 0.6 0.7 0.8 0.9 1

Inlet pressure (MPa)

5

4

3

2

1

0

Charge time per 10 liters t (s)

1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2.0

Pressure increase ratio P2/P

1

60

50

40

30

20

10

0

Charge time per 10 liters t (s)

1.0 1.2 1.4 1.6 1.8 2.0

Pressure increase ratio P2/P

1

2

1.5

1

0.5

Outlet pressure (MPa)

0 100 200 300 400

Outlet air flow (l/min (ANR))

1.1

1.05

1.

0

0.95

0.

9

0.85

0.

8

Outlet pressure (MPa)

0 0.50.4 0.6 0.7 0.8 0.9 1

Inlet pressure (MPa)

P1 = 0.5 MPa

P1 = 0.4 MPa

P1 = 0.3 MPa

VBA20A, 22A

VBA20A, 22A

Flow Characteristics

Charge Characteristics

Set point

VBA40A, 42A

VBA40A, 42A

P1 = 0.5 MPa

P1 = 0.4 MPa

P1 = 0.3 MPa

Flow Characteristics

Charge Characteristics

Set point

VBA10A

VBA10A

Flow Characteristics

Pressure
Characteristics

Pressure
Characteristics

Pressure
Characteristics

Charge Characteristics

P

1

= 1.0 MP

a

P

1

= 0.75 MP

a

P

1

= 0.5 MPa

P

1

= 0.4 MP

a

P

1

= 0.3 MPa

P1 = P2

Set point

Inlet pressure: 0.7 MPa

Outlet pressure: 1.0 MPa

Flow rate: 20 l/min (ANR)

Inlet pressure: 0.7 MPa

Outlet pressure: 1.0 MPa

Flow rate: 20 l/min (ANR)

Inlet pressure: 0.7 MPa

Outlet pressure: 1.0 MPa

Flow rate: 20 l/min (ANR)



The time required to charge the tank pressure
from 0.7 MPa to 0.95 MPa at 0.5 MPa supply
pressure:

With the pressure increase ratio from 1.4 to 1.9,
the charge time of 23 – 6 = 17 sec. (t) is given
by the graph. Then, the charge time (T) for a
10 l tank:

P

2

P

1

0.7

0.5

= = 1.4 = 1.9 = 1.6 = 2.0

P

2

P

1

0.95

0.5

=

T = t x = 17 x = 17 (s).

V

10

10
10



The time required to charge the tank pressure
from 0.8 MPa to 1.0 MPa at 0.5 MPa supply
pressure:

With the pressure increase ratio from 1.6 to 2.0,
the charge time of 11.5 – 3.8 = 7.7 sec. (t) is
given by the graph. Then, the charge time (T)
for a 100 l tank:

P

2

P

1

0.8

0.5

=

P

2

P

1

1.0

0.5

=

T = t x = 7.7 x = 77 (s).

V

10

100

10



The time required to charge the tank pressure
from 0.8 MPa to 1.0 MPa at 0.5 MPa supply
pressure:

With the pressure increase ratio from 1.6 to 2.0,
the charge time of 3.5 – 1.1 = 2.4 sec. (t) is given
by the graph. Then, the charge time (T) for a
100

l tank:

P

2

P

1

0.8

0.5

= = 1.6 = 2.0

P

2

P

1

1.0

0.5

=

T = t x = 2.4 x = 24 (s).

V

10

100

10

Series VBA

1.6

1.4

1.2

1

0.8

0.6

0.4

0.2

Outlet pressure (MPa)

0 500 1000 1500 2000 2500 3000

Outlet air flow (l/min (ANR))

1.08

1.06

1.04

1.02

1.

0

0.98

0.96

0.94

Outlet pressure (MPa)

0 0.4 0.5 0.6 0.7 0.8 0.9 1

Inlet pressure (MPa)

0.1

0.08

0.06

0.04

0.02

Max. pulsation range (MPa)

0 1 2 3 4 5

Capacity (l)

0.1

0.08

0.06

0.04

0.02

Max. pulsation range (MPa)

0 10 20 30 4038

Capacity (l)

400

300

200

100

0

Charge time per 10 liters t (s)

1.0 2.0 3.0 4.0

Pressure increase ratio P2/P

1

1.10

1.08

1.06

1.04

1.02

1.

0

0.98

0.96

0.94

0.92

Outlet pressure (MPa)

0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1

Inlet pressure (MPa)

2

1

Outlet pressure (MPa)

0 100 13050

Outlet air flow (l/min (ANR))

5

4

3

2

1

0

Charge time per 10 liters t (s)

1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2.0

Pressure increase ratio P2/P

1

Pressure
Characteristics

Inlet pressure: 0.6 MPa

Outlet pressure: 1.0 MPa

Flow rate: 10

l/min (ANR)

= 2.0 = 3.0

T = t x = 110 x = 110 (s).

V

10

10
10



The time required to charge the tank pressure
from 1.0 MPa to 1.5 MPa at 0.5 MPa supply
pressure:

With the pressure increase ratio from 2.0 to 3.0,
the charge time of 170 – 60 = 110 sec. (t) is
given by the graph. Then, the charge time (T)
for a 10 l tank:

P

2

P

1

1.0

0.5

=

P

2

P

1

1.5

0.5

=

Pulsation/Pulsation is decreased

by using the tank.

If the outlet capacity is undersized, pulsation may
occur.

Conditions:
Inlet pressure: 0.5 MPa
Outlet set pressure: 1 MPa
Flow rate: Between 0 and max. flow rate

VBA2A
VBA4A

VBAT

VBA10A

•

Performance of the air tank

• Alleviates the pulsation generated on the
outlet side.

• Manages supply air to be consumed for
short periods of time by storing air through
raising the tank pressure.

Flow Characteristics

Charge Characteristics

P

1

= 0.8

M

Pa

P

1

= 0.7

M

P

a

P

1

= 0.6

M

P

a

P

1

=

0.5
M

Pa

P1 = P2

VBAT05A

Set point

VBA43A

VBA43A

VBAT05A

VBAT10A, VBAT20A, VBAT38A

VBAT10A

VBAT20A

VBAT38A

VBAT

VBA1111

VBA1111

Flow Characteristics

Charge Characteristics

P

1

=

P

2

P

1

= 1.0 MPa

P

1

= 0.75 MPa

P

1

= 0.5

M

P

a

P

1

= 0.4 MPa

P

1

= 0.3 MPa

Set point

Pressure
Characteristics

Inlet pressure: 0.7 MPa

Outlet pressure: 1.0 MPa

Flow rate: 20 l/min (ANR)



The time required to charge the tank pressure
from 0.8 MPa to 1.0 MPa at 0.5 MPa supply
pressure:

With the pressure increase ratio from 1.6 to 2.0,
the charge time of 4.5 – 1.3 = 3.2 sec. (t) is
given by the graph. Then, the charge time (T)
for a 100 l tank:

P

2

P

1

0.8

0.5

= = 1.6 = 2.0

P

2

P

1

1.0

0.5

=

T = t x = 3.2 x = 32 (s).

V

10

100

10

Booster Regulator

Series VBA

3

Booster Regulator

Series VBA

VBA43A

Flow Characteristics

1.6

1.4

1.2

1

0.8

0.6

Outlet pressure (MPa)

0.4

0.2

0 500 1000 1500 2000 2500 3000

P

Outlet air flow (l/min (ANR))

Pressure
Characteristics

1.08

1.06

1.04

1.02

1.

0

0.98

0.96

Outlet pressure (MPa)

0.94

0 0.4 0.5 0.6 0.7 0.8 0.9 1

Inlet pressure (MPa)

1

=

P

1

= 0.8

P

1

= 0.7

P

1

= 0.6

M

0.5

P

a

M

Pa

Outlet pressure: 1.0 MPa

Flow rate: 20 l/min (ANR)

Set point

M

Pa

M

P

a

2

P1 = P

Inlet pressure: 0.7 MPa

VBA1111

Flow Characteristics

2

P

1

= 0.75 MPa

P

1

P

1

= 0.4 MPa

P

1

= 0.3 MPa

1

= 0.5

M

P

a

Outlet pressure (MPa)

0 100 13050

Outlet air flow (l/min (ANR))

Pressure
Characteristics

1.10

1.08

1.06

1.04

1.02

1.

0

0.98

0.96

Outlet pressure (MPa)

0.94

0.92

0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1

Inlet pressure (MPa)

P

1

= 1.0 MPa

2

P

=

1

P

Inlet pressure: 0.6 MPa

Outlet pressure: 1.0 MPa

Flow rate: 10

l/min (ANR)

Set point

Pulsation/Pulsation is decreased

by using the tank.

If the outlet capacity is undersized, pulsation may
occur.

VBAT05A

0.1

0.08

0.06

0.04

0.02

Max. pulsation range (MPa)

0 1 2 3 4 5

VBAT05A

Capacity (l)

VBAT

VBA10A

VBAT10A, VBAT20A, VBAT38A

0.1

0.08

0.06

0.04

VBAT10A

Charge Characteristics

5

4

3

2

1

Charge time per 10 liters t (s)

0

1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2.0

Pressure increase ratio P2/P

VBA43A



The time required to charge the tank pressure
from 0.8 MPa to 1.0 MPa at 0.5 MPa supply
pressure:

0.8

2

P

= = 1.6 = 2.0

1

0.5

P

With the pressure increase ratio from 1.6 to 2.0,
the charge time of 4.5 – 1.3 = 3.2 sec. (t) is
given by the graph. Then, the charge time (T)
for a 100 l tank:

V

T = t x = 3.2 x = 32 (s).

10

100

10

1.0

2

P

=

1

0.5

P

1

Charge Characteristics

400

300

200

100

Charge time per 10 liters t (s)

0

1.0 2.0 3.0 4.0

Pressure increase ratio P2/P

VBA1111



The time required to charge the tank pressure
from 1.0 MPa to 1.5 MPa at 0.5 MPa supply
pressure:

1.0

2

P

1

P

= 2.0 = 3.0

=

0.5

With the pressure increase ratio from 2.0 to 3.0,
the charge time of 170 – 60 = 110 sec. (t) is
given by the graph. Then, the charge time (T)
for a 10 l tank:

V

T = t x = 110 x = 110 (s).

10

10
10

1.5

2

P

=

1

0.5

P

1

0.02

Max. pulsation range (MPa)

0 10 20 30 4038

VBAT20A

VBAT38A

Capacity (l)

VBAT

VBA2A
VBA4A

Conditions:
Inlet pressure: 0.5 MPa
Outlet set pressure: 1 MPa
Flow rate: Between 0 and max. flow rate

Performance of the air tank

•

• Alleviates the pulsation generated on the
outlet side.

• Manages supply air to be consumed for
short periods of time by storing air through
raising the tank pressure.

4

General line (low pressure) Locations requiring high pressure

VBA

VBA

VBA VBA

Operating pressure:

0.5 MPa
Bore size: ø100
Output: ≈3850N

Operating pressure:

0.8 MPa
Bore size: ø80
Output:

≈4000N

0.5 MPa

ø100

IN 0.5 MPa

E

ø80

OUT 0.8 MPa

P

2

P

1

Shortening time

Without check
valve by-pass

Time t (S)

Outlet pressure (MPa)

P

2

P

1

0

Plant line (source pressure)

(Two-stage

pressure boost)

VBA22A, VBA42A

IN (Inlet)

Governor
Booster
chamber

A

Drive
chamber

A

Switching valve

Piston

Drive
chamber

B

Booster chamber

B

Check valve

OUT

(Outlet)

E

Piston rod

Air-operated type

Pilot pressure

IN (Inlet)

Booster chamber

B

Booster
chamber

A

Piston

Check valve

OUT (Outlet)

Governor

Drive
chamber

A

E

Drive
chamber

B

Switching

valve

Equivalent

output

Circuit Example

Working Principle

The IN air passes through the check valve to booster chambers A and B. Meanwhile, air is supplied to drive chamber B via the governor and the
switching valve. Then, the air pressure from drive chamber B and booster chamber A are applied to the piston, boosting the air in booster cham-
ber B. As the piston travels, the boosted air is pushed via the check valve to the OUT side. When the piston reaches to the end, the piston causes
the switching valve to switch, so that drive chamber B is in the exhaust state and drive chamber A is in the supply state respectively. Then, the
piston reverses its movement, this time, the pressures from booster chamber B and drive chamber A boosts the air in booster chamber A and
sends it to the OUT side. The process described above is repeated to continuously supply highly pressurized air from the IN to the OUT side. The
governor establishes the outlet pressure by handle operation and pressure adjustment in the drive chamber by feeding back the outlet pressure.

• When only some of the machines in the plant require high-pressure
air, booster regulators can be installed for only the equipment that
requires it. This allows the overall system to use low air pressure
while accommodating machines requiring high-pressure air.

• When the actuator output is insufficient but space limitations prohibit
switching to a larger cylinder diameter, a booster regulator can be
used to increase the pressure. This makes it possible to boost the
output without replacing the actuator.

• When a certain level of output is required but the cylinder size must
be kept small so that the driver remains compact.

• When filling a tank or the like from a source at atmospheric
pressure, a circuit with a check valve can be used to reduce the
filling time by allowing air to pass through the check valve up to the
inlet pressure.

•

When only one side of the cylinder is used for work, booster
regulators can be installed only on the lines that require them to
reduce the overall air consumption volume.

VBA1111VBA10A, VBA20A, VBA40A, 43A

Initially, inlet pressure (P1) passes through the check valve, fills P2,
and results in P1 = P2.

Series VBA

Tc Ts

øD

L

P2P3P1

END

START

100
100
200

1

0.5
30

0.5

0.8

NO

NO

NO

YES

YES YES YES

YES

When running continuously for longer periods of time, confirm the life expectancy.
When the life expectancy is shorter than required, select a larger sized booster regulator

.

Select the tank
from table below.

Avoid

pulsation

(Max. 0.05

MPa)

Judgement

of charge time

T ≤ Ts

Provide requisite
conditions for
selection.

Calculate
required air flow
rate Q.

Select booster regula-
tor size from flow cha-
racteristics table.

Obtain the tank
volume V.

Select the tank
volume over V.

Calculate time T
from charge charac-
teristics table.

Increase number of
booster regulators
(Z) to decrease T.

Tank part no.

VBAT05A
VBAT10A
VBAT20A
VBAT38A

VBA10A

VBA10A

—

—

—

VBA2A

VBA2A

VBA2A

—

—

VBA4A

VBA4A

Applicable combination modelInner volume

Sizing (Sizing can be achieved by using SMC Pneumatic System Energy Saving Program Ver. 3.1.

Please contact your SMC sales representative.)

Lower limit of pressure inside tank P2

Pressure

Stroke

Upper limit of pressure inside tank P3

Inlet pressure P1

Time

Necessary supply
pressure to cylinder

P2

Example

Necessary conditions:
D [mm]: Cylinder bore size
L [mm]: Cylinder stroke
W [mm/s]: Cylinder operating speed
C [pc.]: Number of cylinders
Tc [s]: Cylinder operating time
Ts [s]: Cylinder stop time
P1 [MPa]: Inlet pressure
P2 [MPa]

Note 1)

: Necessary supply

pressure to cylinder

Note 1) P2 is the necessary supply pressure to a cylinder, and set the pressure below the lower limit of pressure inside the tank

with a regulator. Adjust the pressure taking the maximum operating pressure of equipment in use into consideration.

Note 2) P3 is the output pressure of the booster regulator, which is also the upper limit of charge pressure to a tank.

Other conditions:
Q [l/min (ANR)]: Required air flow rate
Qb [l/min (ANR)]: Outlet air flow rate of booster regulator
Tc [s]: Cylinder stroke time
K: Cylinder double-acting: 2, single-acting: 1
P3 [MPa]

Note 2)

: Tank charge pressure

T1 [s]: Time to charge (Time to charge to P2)
T2 [s]: Time to charge (Time to charge to P3)
T [s]: Time to charge (Time to charge from P2 to P3)
Z: Number of booster regulators

Judgement of

flow rate

Q [l/min (ANR)] =

π x D2 x W x (P2 + 0.101)

x 60 x

C

4 x 10

6

0.101

Q =

π x 1002 x 200 (0.8 + 0.101)

x 60 x 1 = 841

[l/min (ANR)]x

4 x 10

6

0.101

Refer to “Flow Characteristics” on pages 3 and 4.

VBA2A: Qb = 600 [l/min (ANR)]
VBA4A: Qb = 1050 [l/min (ANR)]

NO: Need no tank

The VBA4A can supply necessary pressure.

The

VBA2A

cannot obtain necessary pressure.

(P3 – P2) x 9.9

V [l] =

(Q – Qb/2) x (Tc x K/60)

V = = 4.6 [l]

(1.0 – 0.8) x 9.9

Select the VBAT10A, which can be
directly connected to the VBA2A.

(841 – 600/2) x (0.5 x 2/60)

Refer to “Charge Characteristics” on pages 3 and 4.

T = ( ) x = 3.5 [s]

T [s] = ( ) x

T2 – T

1

V

10

4.6
10

Z

11.5 – 3.8
1

Extend

stop time Ts

up to charge time

T or more.

Caution



Use the VBA1111 (pressure increase ratio 4) with pressure

increase ratio of 2 to 4. Usage of pressure increase ratio below
2 is preferred for the VBA10A (pressure increase ratio 2). A
stable operation and increased life expectancy will result.



Inlet supply pressure volume is approximately twice the volume

of the outlet side. {approx. 2 times (pressure increase ratio 2),
approx. 4 times (pressure increase ratio 4)}. Booster regulator
requires that the inlet side volume should be the sum of the flow
volume running into the outlet side and the volume exhausted
from E port (for driving), because air is the power source.

5 l

10

l

20 l

38

l

Booster Regulator

Series VBA

5

Booster Regulator

Series VBA

Sizing (Sizing can be achieved by using SMC Pneumatic System Energy Saving Program Ver. 3.1.

Please contact your SMC sales representative.)

Tc Ts

START

Provide requisite
conditions for
selection.

Calculate
required air flow
rate Q.

Select booster regula­tor size from flow cha­racteristics table.

P2P3P1

Necessary conditions:
D [mm]: Cylinder bore size
L [mm]: Cylinder stroke
W [mm/s]: Cylinder operating speed
C [pc.]: Number of cylinders
Tc [s]: Cylinder operating time
Ts [s]: Cylinder stop time
P1 [MPa]: Inlet pressure

Note 1)

P2 [MPa]

Note 1) P2 is the necessary supply pressure to a cylinder, and set the pressure below the lower limit of pressure inside the tank

Note 2) P3 is the output pressure of the booster regulator, which is also the upper limit of charge pressure to a tank.

Q [l/min (ANR)] =

π x 1002 x 200 (0.8 + 0.101)

Q =

4 x 10

: Necessary supply

pressure to cylinder

with a regulator. Adjust the pressure taking the maximum operating pressure of equipment in use into consideration.

π x D2 x W x (P2 + 0.101)

6

4 x 10

6

0.101

0.101

Example

100
100
200

0.5
30

0.5

0.8

x 60 x

x 60 x 1 = 841

L

Stroke

øD

Other conditions:
Q [l/min (ANR)]: Required air flow rate
Qb [l/min (ANR)]: Outlet air flow rate of booster regulator
Tc [s]: Cylinder stroke time
K: Cylinder double-acting: 2, single-acting: 1

1

P3 [MPa]
T1 [s]: Time to charge (Time to charge to P2)
T2 [s]: Time to charge (Time to charge to P3)
T [s]: Time to charge (Time to charge from P2 to P3)
Z: Number of booster regulators

Upper limit of pressure inside tank P3

Lower limit of pressure inside tank P2

Pressure

Inlet pressure P

Time

Note 2)

: Tank charge pressure

1

Caution

C

[l/min (ANR)]x



Use the VBA1111 (pressure increase ratio 4) with pressure

increase ratio of 2 to 4. Usage of pressure increase ratio below
2 is preferred for the VBA10A (pressure increase ratio 2). A
stable operation and increased life expectancy will result.



Inlet supply pressure volume is approximately twice the volume

Necessary supply
pressure to cylinder

P2

of the outlet side. {approx. 2 times (pressure increase ratio 2),

VBA2A: Qb = 600 [l/min (ANR)]
VBA4A: Qb = 1050 [l/min (ANR)]

Refer to “Flow Characteristics” on pages 3 and 4.

approx. 4 times (pressure increase ratio 4)}. Booster regulator
requires that the inlet side volume should be the sum of the flow
volume running into the outlet side and the volume exhausted
from E port (for driving), because air is the power source.

Judgement of

flow rate

VBA2A

YES

The

Obtain the tank
volume V.

Select the tank
volume over V.

Calculate time T
from charge charac­teristics table.

Judgement

of charge time

T ≤ Ts

NO: Need no tank

cannot obtain necessary pressure.

(Q – Qb/2) x (Tc x K/60)

V [l] =

V = = 4.6 [l]

Select the VBAT10A, which can be
directly connected to the VBA2A.

Refer to “Charge Characteristics” on pages 3 and 4.

T [s] = ( ) x

T = ( ) x = 3.5 [s]

(P3 – P2) x 9.9

(841 – 600/2) x (0.5 x 2/60)

(1.0 – 0.8) x 9.9

V

10

4.6

11.5 – 3.8

10

NO

The VBA4A can supply necessary pressure.

1

T2 – T

Z

1

Extend

stop time Ts

up to charge time

T or more.

NO

Select the tank
from table below.

Tank part no.

VBAT05A
VBAT10A
VBAT20A
VBAT38A

5 l

10

20 l

38

Increase number of
booster regulators
(Z) to decrease T.

YES

l

l

Avoid

pulsation

(Max. 0.05

MPa)

Applicable combination modelInner volume

VBA10A

VBA10A

—

—

—

VBA2A

VBA2A

VBA2A

NO

—

—

VBA4A

VBA4A

YES YES YES

END

When running continuously for longer periods of time, confirm the life expectancy.
When the life expectancy is shorter than required, select a larger sized booster regulator

.

6

Design

Warning

1. Warning concerning abnormal outlet pressure

• If there is a likelihood of causing an outlet pressure drop
due to unforeseen circumstances such as equipment mal­function, thus leading to a major problem, take safety mea­sures on the system side.

• Because the outlet pressure could exceed its set range if
there is a large fluctuation in the inlet pressure, leading to
unexpected accidents, take safety measures against abnor­mal pressures.

• Operate the equipment within its maximum operating pres­sure and set pressure range.

2. Residual pressure measures

• Connect a 3-port valve to the OUT side of the booster regu­lator if the residual pressure must be released quickly from
the outlet pressure side for maintenance, etc. (Refer to the
below diagram.) The residual outlet pressure side cannot be
released even if the 3-port valve is connected to the IN side
because the check valve in the booster regulator will activa­te.

• After operation is finished, release the supply pressure at the in­let. This stops the booster valve from moving needlessly and
prevents operating malfunctions.

Selection

Caution

1. Verify the specifications.

• Consider the operating conditions and operate this product
within the specification range that is described in this catalo­gue.

2. Selection

• Based on the conditions (pressure, flow rate, takt time, etc.)
required for the outlet side of the booster regulator, select
the size of the booster regulator in accordance with the se­lection procedures described in this catalogue or model se­lection program.

• Use the VBA1111 (pressure increase ratio 4) with pressure
increase ratio of 2 to 4. Usage of pressure increase ratio
below 2 is preferred for the VBA10A (pressure increase ra­tio 2). A stable operation and increased life expectancy will
result.

• Inlet supply pressure volume is approximately twice the vo­lume of the outlet side. {approx. 2 times (pressure increase
ratio 2), approx. 4 times (pressure increase ratio 4)}. Boos­ter regulator requires that the inlet side volume should be
the sum of the flow volume running into the outlet side and
the volume exhausted from E port (for driving), because air
is the power source.

• When running continuously for longer periods of time, con­firm the life expectancy. The life expectancy of a booster re­gulator is dependent upon the operational cycle. Thus,
when used for driving cylinders, etc. in the outlet side, life
expectancy will be reduced.

• Make sure the outlet pressure is set more than 0.1 MPa hig­her than the inlet pressure. A pressure difference less than

0.1 MPa makes the operation unstable and may result in
malfunction.

Mounting

Caution

1. Transporting

• When transporting this product, hold it lengthwise with both
hands. Never hold it by the black handle that protrudes from
the centre because the handle could become detached
from the body, causing the body to fall and leading to injury.

2. Installation

• Install this product so that the silver-coloured tie-rods and
cover are placed horizontally. If mounted vertically, it may
result in malfunction.

• Because the piston cycle vibration is transferred, use the fo­llowing mounting bolts (VBA1: M5; VBA2, 4: M10) and tigh­ten them with the specified torque (VBA1: 3 N· m; VBA2, 4:
24 N·m).

• If the transmission of vibration is not preferred, insert an iso­lating rubber material before installation.

• The pressure gauge should be mounted with the following
torque. R 1/16: 3 to 4 N, R 1/8: 7 to 9

N

Piping

Caution

1. Flushing

• Use an air blower to flush the piping to thoroughly remove
any cutting chips, cutting oil, or debris from the piping insi­de, before connecting them. If they enter the inside of the
booster regulator, they could cause the booster regulator to
malfunction or its durability could be affected.

2. Piping size

• To bring the booster regulator’s ability into full play, make
sure to match the piping size to the port size.

Air Supply

Caution

1. Quality of air source

• Connect a mist separator to the inlet side near the booster
regulator. If the quality of the compressed air is not tho­roughly controlled, the booster regulator could malfunction
(without being able to boost) or its durability could be affec­ted.

• If dry air (atmospheric pressure dew point: –17°C or less) is
used, the life expectancy may be shortened because dry air
will accelerate evaporation of grease inside.

Operating Environment

Caution

1. Installation location

• Do not install this product in an area that is exposed to rain­water or direct sunlight.

• Do not install in locations influenced by vibrations. If it must
be used in such an area due to unavoidable circumstances,
please contact SMC beforehand.

Series VBA

Handling

1

0.9

0.8

0.7

0.6

0.5

0.5

0.4

0.4

0.3

0.3

0.2

0.2

Pilot pressure MPa

0.1

0.1

0

Outlet pressure MPa (Q = 0)

SMC

HighLow

1. Setting the pressure on the handle-operated type

• If air is supplied to the product in the shipped state, the air
will be released.
Set the pressure by quickly pulling up on the governor han-
dle, releasing the lock, and rotating the handle in the direc-
tion of the arrow (+).

• There is an upper and lower limit for the handle rotation. If
over-rotating the handle even after reaching to the limit, the
internal parts may be damaged. If the handle suddenly feels
heavy while being turned, stop turning the handle.

• Once the setting is completed, push the handle down and
lock it.

• To decrease the outlet pressure, after the pressure has
been set, rotate the handle in the direction of the arrow (–).
The residual air will be released from the area of the han-
dle, due to the relief construction of the governor.

• To reset the pressure, first reduce the pressure so that it is
lower than the desired pressure; then, set it to the desired
pressure.

Caution

2. Setting the pressure on the air-operated type
(VBA22A, 42A)

• Connect the outlet pipe of the pilot regulator for the remote

control to the pilot port (P). (Refer to the figure below.)

• Refer to the following figure for the relation between the

pilot pressure and outlet pressure.

• The AR20 and AW20 are recommended for the pilot regula-

tor.

Pilot regulator

• The outlet pressure is twice the pilot pressure.

• When the inlet pressure is 0.4 MPa:

Pilot pressure

0.2 MPa to 0.4 MPa

Outlet pressure

0.4 MPa to 0.8 MPa

3. Draining

• If this product is used with a large amount of drainage accu-
mulated in the filter, mist separator, or the tank, the draina-
ge could flow out, leading to equipment malfunction. There-
fore, drain the system once a day. If it

is equipped with an

auto-drain, check its operation once a day.

4. Exhaust

• Exhausting time from E port may be longer for a booster re-
gulator which is set to switch in longer hour intervals. This is
not an abnormal phenomenon.

5. Maintenance

• Life expectancy varies depending on the quality of air and
the operating conditions. Signs that the unit

is reaching the

end of its service life include the following:

•

Constant bleed from under the handle.

•

Air exhaust can be heard from the booster regulator at 10

to 20 second intervals even when there

is no air con-

sumption on the outlet side.

Conduct maintenance earlier than scheduled in such cases.

• When maintenance is required, confirm the model and serial
number of the booster regulator, and please contact SMC
for maintenance kit.

• Maintenance should be carried out according to the speci-
fied maintenance procedure by individuals possessing
enough knowledge and experiences in maintaining pneu-
matic equipment.

• The list of replacement parts and kit part number are shown
on page 9, and the figure shows the position of the parts.

Booster Regulator

Series VBA

7

Caution

1. Setting the pressure on the handle-operated type

• If air is supplied to the product in the shipped state, the air
will be released.
Set the pressure by quickly pulling up on the governor han­dle, releasing the lock, and rotating the handle in the direc­tion of the arrow (+).

• There is an upper and lower limit for the handle rotation. If
over-rotating the handle even after reaching to the limit, the
internal parts may be damaged. If the handle suddenly feels
heavy while being turned, stop turning the handle.

• Once the setting is completed, push the handle down and
lock it.

• To decrease the outlet pressure, after the pressure has
been set, rotate the handle in the direction of the arrow (–).
The residual air will be released from the area of the han­dle, due to the relief construction of the governor.

• To reset the pressure, first reduce the pressure so that it is
lower than the desired pressure; then, set it to the desired
pressure.

SMC

HighLow

2. Setting the pressure on the air-operated type
(VBA22A, 42A)

• Connect the outlet pipe of the pilot regulator for the remote

control to the pilot port (P). (Refer to the figure below.)

• Refer to the following figure for the relation between the

pilot pressure and outlet pressure.

• The AR20 and AW20 are recommended for the pilot regula-

tor.

Handling

3. Draining

4. Exhaust

5. Maintenance

Booster Regulator

Series VBA

• If this product is used with a large amount of drainage accu­mulated in the filter, mist separator, or the tank, the draina­ge could flow out, leading to equipment malfunction. There­fore, drain the system once a day. If it

is equipped with an

auto-drain, check its operation once a day.

• Exhausting time from E port may be longer for a booster re­gulator which is set to switch in longer hour intervals. This is
not an abnormal phenomenon.

• Life expectancy varies depending on the quality of air and
the operating conditions. Signs that the unit

is reaching the

end of its service life include the following:

•

Constant bleed from under the handle.

•

Air exhaust can be heard from the booster regulator at 10

to 20 second intervals even when there

is no air con-

sumption on the outlet side.

Conduct maintenance earlier than scheduled in such cases.

• When maintenance is required, confirm the model and serial
number of the booster regulator, and please contact SMC
for maintenance kit.

• Maintenance should be carried out according to the speci­fied maintenance procedure by individuals possessing
enough knowledge and experiences in maintaining pneu­matic equipment.

• The list of replacement parts and kit part number are shown
on page 9, and the figure shows the position of the parts.

Pilot regulator

• The outlet pressure is twice the pilot pressure.

• When the inlet pressure is 0.4 MPa:

Pilot pressure

0.2 MPa to 0.4 MPa

Outlet pressure

0.4 MPa to 0.8 MPa

1

0.9

0.8

0.7

0.6

0.5

0.4

0.3

Outlet pressure MPa (Q = 0)

0.2

0.1

0

0.2

0.1
Pilot pressure MPa

0.3

0.4

0.5

8

Air-operated type

VBA22A, 42A

VBA1111

VBA10A VBA20A, 22A,

VBA40A, 42A, 43A

Replacement Parts/Kit Part No.

The kit includes the parts from to and a grease pack.

Model

No.

1

2

3

4

5

6

—

Piston seal

Governor assembly

Check valve

Gasket

Rod seal

Mounting screw

Grease pack

Description

Place an order with the following applicable kit part number.

Model

Kit part no.

VBA43A VBA1111VBA42AVBA22AVBA40AVBA20AVBA10A

KT-VBA10A-1 KT-VBA20A-1 KT-VBA40A-1 KT-VBA22A-1 KT-VBA42A-1 KT-VBA43A-1 KT-VBA1111-2

VBA43A VBA1111VBA42AVBA22AVBA40AVBA20AVBA10A

Quantity

2

4

2

1

8

1

— 8 12

2

1

1

8

1

12

2

1 each large and small

2 large 1 small 2

∗ The grease pack has 10 g of grease.
∗ Make sure to refer to the procedure for maintenance.

Construction/Replacement Parts

Series VBA

28

21

98

118

176

46 43

OUT port
Rc 3/8

IN port
Rc 3/8

Silencer (Option)

4 x ø12

EXH port
Rc 3/8

15

24

IN side gauge port
Rc 1/

8

300

39

OUT side gauge port
Rc 1/8

Pressure gauge (Option)

3.2

53

73

43

22

130

150

215

62.8 62

OUT port
Rc 1/2

IN port
Rc 1/2

Silencer (Option)

EXH port
Rc 1/2

EXH port
Rc 1/4

8

32

4 x ø12

IN side gauge port
Rc 1/

8

404

40

OUT side gauge port
Rc 1/8

Pressure gauge (Option)

3.2

96

116

150

60

IN side gauge port
Rc 1/

8

OUT side gauge port
Rc 1/8

Pressure gauge (Option)

40

8.5

50

113

27 23

OUT port
Rc 1/4

IN port
Rc 1/4

4 x ø5.5

EXH port
Rc 1/4

Silencer (Option)

60

70

22

28

IN

OUT

4 x ø5.5

Pressure gauge (Option)

IN port
Rc 1/4
OUT port
Rc 1/4

Silencer (Option)

IN side gauge port
Rc 1/16

OUT side gauge port
Rc 1/16

40

10

50

60

150

60
70

27 23

108.5

22

25

44

VBA10A-02

VBA1111-02

VBA20A-03

VBA40A-04

Dimensions

Booster Regulator

Series VBA

9

Dimensions

Booster Regulator

Series VBA

VBA10A-02

IN port

113

Rc 1/4
OUT port
Rc 1/4

27 23

4 x ø5.5

VBA20A-03

IN port

176

Rc 3/8

OUT port
Rc 3/8

46 43

4 x ø12

150

60

28

Silencer (Option)

22

60

70

28

21

98

118

EXH port
Rc 1/4

15

EXH port
Rc 3/8

Silencer (Option)

24

IN side gauge port
Rc 1/

8

IN side gauge port
Rc 1/

40

50

300

39

8

53

73

8.5

Pressure gauge (Option)

OUT side gauge port
Rc 1/8

Pressure gauge (Option)

OUT side gauge port
Rc 1/8

3.2

VBA40A-04

IN port
Rc 1/2

215

OUT port
Rc 1/2

62.8 62

4 x ø12

VBA1111-02

IN port

108.5

Rc 1/4
OUT port
Rc 1/4

27 23

404

40

43

IN side gauge port

8

Rc 1/

8

Silencer (Option)

22

32

130

150

44

25

60
70

EXH port
Rc 1/2

EXH port
Rc 1/4

Silencer (Option)

4 x ø5.5

116

150

OUT side gauge port
Rc 1/16

22

Pressure gauge (Option)

OUT side gauge port
Rc 1/8

96

60

IN

OUT

40

50

10

3.2

Pressure gauge (Option)

IN side gauge port
Rc 1/16

10

21

15

24

46 43

139

28

3.2

Silencer (Option)

EXH port
Rc 3/8

4 x ø12

OUT port
Rc 3/8

IN port
Rc 3/8

Pressure gauge (Option)

OUT side gauge port
Rc 1/8

IN side gauge port
Rc 1/

8

43

172

62.8 62
32

8

22

3.2

Pressure gauge (Option)
IN side gauge port
Rc 1/

8

OUT side gauge port
Rc 1/8

4 x ø12

EXH port
Rc 1/2

Silencer (Option)

OUT port
Rc 1/2

IN port
Rc 1/2

221

32

8

22

43

62.8 62

3.2

Pressure gauge (Option)

OUT side gauge port
Rc 1/8

IN side gauge port
Rc 1/

8

Silencer (Option)

EXH port
Rc 1/2

4 x ø12

OUT port
Rc 1/2

IN port
Rc 1/2

39

73

53

300

40

404

96

116

116

96

40

404

118

98

130
150

150

130

VBA22A-03

VBA42A-04

VBA43A-04

The inner or outer copper parts material has
been changed to stainless steel or alumi­num. The fluorine resin parts has been
changed to general resin.

20

Made to Order
Copper-free/Fluorine-free

56

Made to Order
CE explosion-proof directive
(ATEX): Category 3GD

Ozone resistance is strengthened through
the use of fluororubber (diaphragm) and
hydrogenated NBR (valve, rod seal) for the
rubber parts of the seal material.

∗ Inquire about booster regulator with pressure gauge.
∗ This option cannot be selected for air tank with

safety valve.

∗ Weather resistant NBR (diaphragm) and

hydrogenated NBR (valve) is used for the rubber
parts of standard products.

80

Made to Order
Ozone resistant

Standard model no.

Standard model no.

Standard model no.

Made to Order

Please contact SMC for detailed dimensions,
specifications, and lead times.

Dimensions

Copper-free/Fluorine-free

1

CE explosion-proof directive (ATEX) compliant

2

Ozone resistant

3

Series VBA

11

Model (Carbon Steel)

Model

Fluid
Tank capacity

(l)
Max. operating pressure (MPa)
IN port size (Rc)
OUT port size (Rc)
Ambient and fluid temperature (°C)
Weight (kg)
Material
Paint

VBAT05A

5 10

2.0

0 to 75

Carbon steel

Outside: Silver paint, Inside: Rustproof paint

1.0

20 38

3/8
3/8

6.6

3/8
1/2

10.0

1/2
1/2

14.0

1/2
3/4

21.0

VBAT10A VBAT20A VBAT38A

∗ Accessories and options are included in the same container.

Compressed air

VBAT05A

VBAT38A

VBAT 10 A

Material

Carbon steel (SS400)

Material

Symbol

A

Inner volume

5 l
10 l
20 l
38 l

Tank inner volume

Symbol

05
10
20
38

Thread type

Rc

G

Thread type

Symbol

—

F

S

Note 1) The safety valve is not applicable for copper-free,

fluorine-free specification (20-).

Note 2) A safety valve port

is provided only when option R

or S is selected.

Note) Applicable product self-

declamation document
attached.

Option

None

Safety valve

Note 1) Note 2)

(Set pressure 1 MPa)

Applicable model

All models

VBAT20A
VBAT38A

Option

Symbol

—

R

Safety valve

Note 1) Note 2)

(Set pressure 2 MPa)

VBAT05A
VBAT10A

S

Option

Drain valve

Option

Symbol

V

Standards

CE marking

CE compatible product

Symbol

Q

• Compact connections are possible
with booster regulators.

• It can be used alone as a tank.

• Also compatible with CE standards

How to Order

Air Tank

Series VBAT

Made to Order

(For details, refer to page 11.)

QV

12

Drain valve

Safety valve

IN PORT
R1/4

19

OUT PORT
Rc 1/8

20

ø30

58 (CLOSE) to

63 (OPEN)

Safety valve
VBAT-R, VBAT-S

Drain valve
VBAT-V1

52

65

R 3/8

19

ø18.5

EU

CE Marking
Simple Pressure
Vessels Directive

Applicable product
Self-declaration document
attached (The G-thread type
is 6 mm longer due to plug
type differences.)

VBAT05A-SV-Q, VBAT05AF-SV-Q
VBAT10A-SV-Q, VBAT10AF-SV-Q
VBAT20A-RV-Q, VBAT20AF-RV-Q
VBAT38A-RV-Q, VBAT38AF-RV-Q

Country/Region

Law Exportable models Details

Model

VBAT05A VBAT10A VBAT20A VBAT38A

VBATA (Carbon Steel) Accessories/Part No.

VBAT5A-Y-3

VBAT-V1

VBAT10A-Y-3

VBAT20A-Y-3

Note 1) The set pressure of the safety valve cannot be changed.
Note 2) The safety valve is a safety measure that protects the tank from excess pressure. The valve opens

automatically when the specified pressure is reached, releasing express pressure inside the tank. The
valve closes again when the pressure drops below a designated value. Select a pressure valve
appropriate for the maximum operating pressure specification of the tank.

VBAT-S

(Set pressure 2 MPa)

VBAT-R

(Set pressure 1 MPa)

Booster regulator

VBA2A

VBA10A

VBA1111

VBA40A
VBA42A





—

—











—

—

—

The pressure vessel law is different from country to country, so an air tank suitable to a
country needs to be manufactured.
Please select from the below table. For details on all products except for CE markings,
please contact SMC.

Drain valve

Safety valve

VBAT05A

VBAT10A

VBAT20A

VBAT38A

List of Air Tank for Overseas

Accessory kit

Design

Warning

1. Operating pressure

• Operate this product at or below the maximum
operating pressure.

If it is necessary, take ap­propriate safety measures to ensure that the
maximum operating pressure is not exceeded.

• When the tank alone is used
Use a pressure switch or a safety valve to make
sure that the maximum operating pressure is
not exceeded.

2. Connection

• Connect a filter or a mist separator to the OUT
side of the tank. Because the inner surface of
the tank

is untreated, there is a possibility of

dust flowing out to the outlet side.

• Using tank accessories, a VBA booster regulator
can be connected directly in the combinations
indicated below.

Air tank

Selection

Caution

• Consider the operating conditions and operate
this product within the specification range.

• When using the air tank with a booster valve, re­fer to “Sizing” on page 6 or SMC Pneumatic
System Energy Saving Program.

1. Inspection

• The use of pressure vessels could lead to an
unexpected accident due to external damage or
internal corrosion caused by drainage. Therefo­re, make sure to check periodically for external
damage, or the extent of internal corrosion
through the port hole. An ultrasonic thickness
indicator may also be used to check for any re­duction in material thickness.

2. Draining

• If this product is used with a large amount of
drainage, the drainage could flow out, leading to
equipment malfunction or corrosion inside the
tank. Therefore, drain the system once a day.

Maintenance

Warning

1. Accessories

• See the operating manual (VBAT-M1, VBAT-M2,
VBAT-M3, VBAT-M4) regarding combining
booster regulators with older model air tanks.

• The accessories are secured by bands to the
feet of the tank. Once removed, make sure not
to lose them.

2. Installation

• Tank should be installed away from people. It is
dangerous

if the accumulated air inside the tank

were to seep out.

• Do not mount the air tank on a moving part or a
place with vibration.

• When connecting a booster regulator with the
tank, refer to the operating manual first, which is
provided with the air tank before assembling.

• Refer to the operating manual regarding moun­ting methods when using long bolts.

• To mount the air tank on a floor surface, use the
four holes to secure the tank with bolts or an­chor bolts.

Mounting

Caution

Series VBAT

442

∗

(417)

ø180

(367)

180

120

EXH: Rc3/8

4 x ø11

Booster regulator
IN port

Rc 3/8

OUT

Booster regulator
IN port

Rc 3/8

120
180

(454)

(367)

OUT

4 x ø11

EXH: Rc 3/8

ø180

Booster regulator
IN port

Rc 1/4

OUT

(307)

(A)

EXH: Rc1/4

4 x ø11

100
160

ø156

Booster regulator
IN port

Rc 1/4

OUT

(A)

(328)

EXH: Rc1/4

4 x ø11

120

180

ø180

Tank OUT port
Rc 3/8

200

163

257

338

349

∗

6060

3232

Drain port
Rc 1/4

Inspection port
2 x Rc 1/2

Tank IN port
Rc 3/8

Tank OUT port
Rc 1/2

170

278

60130

3232

Drain port
Rc 1/4

312

460

471

∗

Inspection port
2 x Rc 1/2

Tank IN port
Rc 3/8

Safety valve port
Rc 3/8

Safety valve port
Rc 3/8

Safety valve port
Rc 3/8

Tank OUT port
Rc 1/2

Drain port
Rc 1/4

278

170

312

60130

460

471

∗

32

32

Inspection port
2 x Rc 1/2

Tank IN port
Rc 3/8

Connected to VBA20A

∗

The length may be longer than the specification if the plugs mounted on the tank are not fit to the end.

∗

The length may be longer than the specification if the plugs mounted on the tank are not fit to the end.

∗

The length may be longer than the specification if the plugs mounted on the tank are not fit to the end.

A

370

365.5

Connected to VBA22A

Booster regulator

model

VBA10A

VBA1111

A

391

386.5

Booster regulator

model

VBA10A

VBA1111

Connected to VBA10A, 1111

VBAT05A

Material: Carbon steel

Material: Carbon steel

Connected to VBA10A, 1111

VBAT10A

Dimensions

Air Tank

Series VBAT

13

Dimensions

Air Tank

Series VBAT

VBAT05A

Connected to VBA10A, 1111

Booster regulator

model

VBA10A

VBA1111

∗

The length may be longer than the specification if the plugs mounted on the tank are not fit to the end.

VBAT10A

Connected to VBA10A, 1111

Booster regulator

model

VBA10A

VBA1111

∗

The length may be longer than the specification if the plugs mounted on the tank are not fit to the end.

Material: Carbon steel

(A)

A

370

365.5

Material: Carbon steel

(A)

A

391

386.5

Booster regulator
IN port

Rc 1/4

OUT

(307)

ø156

Booster regulator
IN port

Rc 1/4

OUT

(328)

ø180

EXH: Rc1/4

4 x ø11

100
160

EXH: Rc1/4

4 x ø11

120

180

Tank OUT port
Rc 3/8

Tank OUT port
Rc 1/2

Safety valve port
Rc 3/8

Safety valve port
Rc 3/8

200
338

349

Tank IN port
Rc 3/8

Inspection port
2 x Rc 1/2

6060

257

163

3232

Drain port
Rc 1/4

∗

Tank IN port
Rc 3/8

Inspection port
2 x Rc 1/2

60130

278

170

3232

312
460
471

∗

Drain port
Rc 1/4

Connected to VBA20A

Booster regulator
IN port

Rc 3/8

(454)

(367)

OUT

ø180

120
180

EXH: Rc 3/8

Tank OUT port
Rc 1/2

4 x ø11

Safety valve port
Rc 3/8

32

Connected to VBA22A

Tank IN port
Rc 3/8

Inspection port
2 x Rc 1/2

60130

278

170

32

312
460

∗

471

∗

The length may be longer than the specification if the plugs mounted on the tank are not fit to the end.

Drain port
Rc 1/4

Booster regulator
IN port

Rc 3/8

(417)

(367)

EXH: Rc3/8

OUT

ø180

4 x ø11

120
180

∗

442

14

ø256

(A)

(B)

D

250

150

Booster regulator IN port

C

OUT

EXH: C

4 x ø13

Tank OUT port
Rc 3/4

Drain port
Rc 1/4

355

205

500

5050

824

835

∗

Tank IN port
Rc 3/4

Inspection port
2 x Rc 1/2

C

150
250

(A)

(B)

OUT

4 x ø13

EXH:

C

ø256

Booster regulator
IN port

(A)

D

(B)

ø206

200

100

EXH: C

OUT

Booster regulator IN port

C

4 x ø13

Inspection port
2 x Rc 1/2

Tank OUT port
Rc 1/2

Drain port
Rc 1/4

305

180

50

250

250

50

696

∗

400
674

Tank IN port
Rc 3/4

C

100

200

(A)

(B)

OUT

4 x ø13

EXH: C

ø206

Booster regulator
IN port

Safety valve port
Rc 3/8

Safety valve port
Rc 3/8

250

A

Safety valve port
Rc 3/8

Safety valve port
Rc 3/8

VBAT A1-

With safety valve

A

60
130

VBAT05
VBAT10

Tank model

(mm)

05
10

R
S

VBAT A1-

With safety valve

20
38

R

S

D

Note)

—

—
519
543

B

444

479.8
444

479.8

C

Rc 3/8
Rc 1/2
Rc 3/8
Rc 1/2

A

531
570
494
527

VBA20A
VBA40A
VBA22A
VBA42A

Booster regulator model

Note) Option: when G (pressure gauge) is selected

(mm)

∗

The length may be longer than the specification if the plugs mounted on the tank are not fit to the end.

Note) Option: when G (pressure gauge) is selected

(mm)

D

Note)

—

—
469
493

B

394

429.8
394

429.8

C

Rc 3/8
Rc 1/2
Rc 3/8
Rc 1/2

A

481
520
444
477

VBA20A
VBA40A
VBA22A
VBA42A

Booster regulator model

∗

The length may be longer than the specification if the plugs mounted on the tank are not fit to the end.

Connected to VBA22A, 42AConnected to VBA20A, 40A

VBAT38

A

Dimensions

Material: Carbon steel

Connected to VBA22A, 42A

Material: Carbon steel

Connected to VBA20A, 40A

VBAT20

A

Series VBAT

15

Safety Instructions

Be sure to read “Handling Precautions for SMC Products” (M-E03-3) before using.

Lithuania

[phone] www.smclt.lt [e-mail]

Netherlands [phone] www.smcpneumatics.nl [e-mail]
Norway [phone] www.smc-norge.no [e-mail]
Poland [phone] www.smc.pl [e-mail]
Portugal

[phone] www.smc.eu [e-mail]
Romania [phone] www.smcromania.ro [e-mail]
Russia [phone] www.smc-pneumatik.ru [e-mail]
Slovakia [phone] www.smc.sk [e-mail]
Slovenia [phone] www.smc.si [e-mail]
Spain [phone] www.smc.eu [e-mail]
Sweden [phone] www.smc.nu [e-mail]
Switzerland [phone] www.smc.ch [e-mail]
Turkey

[phone]

www.entek.com.tr [e-mail]

UK

[phone]

www.smcpneumatics.co.uk [e-mail]

Specifications are subject to change without prior notice and any obligation on the part of the manufacturer.

SMC CORPORATION

Akihabara UDX 15F, 4-14-1, Sotokanda, Chiyoda-ku, Tokyo 101-0021, JAPAN Phone: [phone] FAX: [phone]

1st printing OU printing OU 00 Printed in Spain

Austria [phone] www.smc.at [e-mail]
Belgium [phone] www.smcpneumatics.be [e-mail]
Bulgaria [phone] www.smc.bg [e-mail]
Croatia

[phone]

www.smc.hr [e-mail]

Czech Republic [phone] www.smc.cz [e-mail]
Denmark [phone] www.smcdk.com [e-mail]
Estonia [phone] www.smcpneumatics.ee [e-mail]
Finland [phone] www.smc.fi [e-mail]
France [phone] www.smc-france.fr [e-mail]
Germany [phone] www.smc-pneumatik.de [e-mail]
Greece [phone] www.smchellas.gr [e-mail]
Hungary [phone] www.smc.hu [e-mail]
Ireland [phone] www.smcpneumatics.ie [e-mail]
Italy [phone] www.smcitalia.it [e-mail]
Latvia [phone] www.smclv.lv [e-mail]

SMC Corporation (Europe)

1. The compatibility of the product is the responsibility of the
person who designs the equipment or decides its specifications.

Since the product specified here is used under various operating conditions, its
compatibility with specific equipment must be decided by the person who designs
the equipment or decides its specifications based on necessary analysis and test
results. The expected performance and safety assurance of the equipment will be
the responsibility of the person who has determined its compatibility with the
product. This person should also continuously review all specifications of the
product referring to its latest catalogue information, with a view to giving due
consideration to any possibility of equipment failure when configuring the
equipment.

2. Only personnel with appropriate training should operate
machinery and equipment.

The product specified here may become unsafe if handled incorrectly. The
assembly, operation and maintenance of machines or equipment including our

products must be performed by an operator who is appropriately trained and
experienced.

3. Do not service or attempt to remove product and

machinery/equipment until safety is confirmed.

1. The inspection and maintenance of machinery/equipment should only be
performed after measures to prevent falling or runaway of the driven objects
have been confirmed.

2. When the product is to be removed, confirm that the safety measures as
mentioned above are implemented and the power from any appropriate source
is cut, and read and understand the specific product precautions of all relevant
products carefully.

3. Before machinery/equi pment is res tarted, t ake measu res to prevent
unexpected operation and malfunction.

4. Contact SMC beforehand and take special consideration of safety
measures if the product is to be used in any of the following
conditions.

1. Conditions and environments outside of the given specifications, or use

outdoors or in a place exposed to direct sunlight.

2. Installation on equipment in conjunction with atomic energy, railways, air

navigation, space, shipping, vehicles, military, medical treatment, combustion
and recreation, or equipment in contact with food and beverages, emergency
stop circuits, clutch and brake circuits in press applications, safety equipment
or other applications unsuitable for the standard specifications described in the
product catalogue.

3. An application which could have negative effects on people, property, or

animals requiring special safety analysis.

4. Use in an interlock circuit, which requires the provision of double interlock for

possible failure by using a mechanical protective function, and periodical
checks to confirm proper operation.

Warning

Limited warranty and Disclaimer/
Compliance Requirements

The product used is subject to the following “Limited warranty and Disclaimer”
and “Compliance Requirements”.
Read and accept them before using the product.

1. The product is provided for use in manufacturing industries.

The product herein described is basically provided for peaceful use in
manufacturing industries.
If considering using the product in other industries, consult SMC beforehand and
exchange specifications or a contract if necessary.
If anything is unclear, contact your nearest sales branch.

Caution

Limited warranty and Disclaimer

1. The warranty period of the product is 1 year in service or 1.5 years after
the product is delivered.

∗2)

Also, the product may have specified durability, running distance or
replacement parts. Please consult your nearest sales branch.

2.

For any failure or damage reported within the warranty period which is clearly our

responsibility, a replacement product or necessary parts will be provided.
This limited warranty applies only to our product independently, and not to any ot­her damage incurred due to the failure of the product

.

3.

Prior to using SMC products, please read and understand the warranty terms
and disclaimers noted in the specified catalogue for the particular products.

∗2) Vacuum pads are excluded from this 1 year warranty.

A vacuum pad is a consumable part, so it is warranted for a year after it is delivered.
Also, even within the warranty period, the wear of a product due to the use of the vacuum pad
or failure due to the deterioration of rubber material are not covered by the limited warranty.

Compliance Requirements

1.

The use of SMC products with production equipment for the manufacture of
weapons of mass destruction (WMD) or any other weapon is strictly prohibited.

2.

The exports of SMC products or technology from one country to another are
governed by the relevant security laws and regulations of the countries involved
in the transaction. Prior to the shipment of a SMC product to another country,
assure that all local rules governing that export are known and followed.

These safety instructions are intended to prevent hazardous situations and/or
equipment damage. These instructions indicate the level of potential hazard with
the labels of “Caution,”

“Warning” or “Danger.” They are all important notes for

safety and must be followed in addition to International Standards (ISO/IEC)

∗1)

,

and other safety regulations.

∗1) ISO 4414: Pneumatic fluid power – General rules relating to systems.

ISO 4413: Hydraulic fluid power – General rules relating to systems.
IEC 60204-1: Safety of machinery – Electrical equipment of machines.

(Part 1: General requirements)
ISO 10218-1: Manipulating industrial robots - Safety.
etc.

Caution indicates a hazard with a low level of risk

which, if not avoided, could result in minor or
moderate injury.

Warning indicates a hazard with a medium level of

risk which, if not avoided, could result in death or
serious injury.

Caution:

Warning

:

Danger :

Danger indicates a hazard with a high level of risk

which, if not avoided, will result in death or serious
injury.

Safety Instructions