Norgren B38SS Installation Instructions

Stainless Steel

Instrument Regulator

B38 - 2"" - """"

B38 (1/4" Ported Units)

Installation & Maintenance

Instructions

Material

Port

4....Stainless steel with Nitrile

2....1/4"

* Outlet pressure can be adjusted to pressures in excess of, and less than, those specified. Do not use these units to control pressures outside of the specified ranges.

TECHNICAL DATA

Fluid: Compressed air
Maximum pressure:

Operating temperature: -40° to +80°C (-40° to +175°F)*
* Air supply must be dry enough to avoid ice formation

Particle removal: 5 µm or 25 µm filter element
Air quality: Within ISO 8573-1, Class 3 and Class 5

Typical flow with 12 bar (175 psig) inlet pressure, 8 bar

Maximum bleed flow at 2 bar (30 psig) outlet pressure

Automatic drain connection: 1/4-18" NPTF
Automatic drain operating conditions (float operated):

Nominal bowl size:

Gauge ports: 1/4", thread form same as main ports
Relief port: 1/8", thread form same as main ports
Materials:

SERVICE KITS

Regulator - items 3, 7, 11, 12, 15, 21, 27

Filter - items 3, 17, 18, 19, 27, 30

PANEL MOUNTING DIMENSIONS

Panel mounting hole diameter: 42 mm (1.65")
Maximum panel thickness: 6 mm (0.24")

INSTALLATION

1. Shut off air pressure. Install filter/regulator in air line -

2. Connect piping to proper ports using pipe thread sealant on

3. Flexible tube with 3mm (0.125") minimum I.D. can be

4. Install a pressure gauge or plug the gage ports. Gage ports

© Norgren 2002

elastomers

5....Stainless steel with Viton

elastomers

Manual drain: 31 bar (450 psig)
Automatic drain: 17 bar (250 psig)

at temperatures below +2°C (+35°F).

(particulates)

(115 psig) set pressure and a droop of 1,0 bar (15
psig) from set: 7 dm

(relieving models only): 1,5 cm

Bowl pressure required to close drain: Greater than

0,3 bar (5 psig)

Bowl pressure required to open drain: Less than

0,2 bar (3 psig)

Minimum air flow required to close drain:1 dm

(2 scfm)

Manual operation: Depress pin inside drain outlet

Short bowl with manual drain: 25 ml (1 fluid oz)
Long bowl with automatic drain: 25 ml (1 fluid oz)

Body, bonnet, bowl, adjusting screw: Stainless steel
Elements:

5 µm: Stainless steel
25 µm: High density polyethylene

Elastomers: Nitrile

Relieving, 2 bar spring ..........................................R38-100R

Relieving, 4 and 7 bar spring ................................R38-101R

Relieving, 10 bar spring ........................................R38-102R

Non-relieving, 2 bar spring .................................R38-100NR

Non-relieving, 4 and 7 bar spring .......................R38-101NR

Non-relieving, 10 bar spring ...............................R38-102NR

Filter, 5 µm element...........................................B38-100S(5)

Filter, 25 µm element.......................................B38-100S(25)

! vertically (bowl down),
! with air flow in direction of arrow on body. In some cases

IN is stamped next to the inlet port.

! upstream of lubricators and cycling valves,
! as close as possible to the device being serviced.

male threads only. Do not allow sealant to enter interior.

connected to the automatic drain. Avoid restrictions in the
tube.

can also be used as additional outlets for regulated air.

3

/s (15 scfm)

Diaphragm

0....Relieving

1....Non-relieving

2....Relieving with wall bracket and panel nut

3....Non-relieving with wall bracket and panel nut

4....Relieving with panel nut

5....Non-relieving with panel nut

ADJUSTMENT

1. Before applying inlet pressure to filter/regulator, turn
adjustment (1) counterclockwise to remove all force on
regulating spring (6).

2. Apply inlet pressure, then turn adjustment (1) clockwise to
increase and counterclockwise to decrease outlet pressure
setting.

3. Always approach the desired pressure from a lower
pressure. When reducing from a higher to a lower setting,
first reduce to some pressure less than that desired, then
bring up to the desired pressure.

With non-relieving filter/regulators, make pressure
reductions with some air flow in the system. If made

3

/s (0.003 scfm)

3

/s

under no flow (dead-end) conditions, the
filter/regulator will trap the over-pressure in the
downstream line.

4. Tighten locknut (2) to lock pressure setting.

SERVICING

1. Open manual drain to expel accumulated liquids. Keep
liquids below element retainer (28).

2. Replace filter element (30) when dirty (check inner surface
of element), or when pressure drop across element
exceeds 0,7 bar (10 psig).

DISASSEMBLY

1. Filter/regulator can be disassembled without removal from
air line.

2. Shut off inlet pressure. Reduce pressure in inlet and outlet
lines to zero.

3. Turn adjustment screw (1) fully counterclockwise.

4. Disassemble in general accordance with the item numbers
on exploded view. Do not remove the drains unless
replacement is necessary. Remove and replace drains only
if they malfunction.

CLEANING

1. Clean parts with warm water and soap.

2. Rinse and dry parts. Blow out internal passages in body
(31) with clean, dry compressed air.

3. Inspect parts. Replace those found to be damaged.

ASSEMBLY

1. Lubricate threads of adjusting screw (1), recess of upper
sprint rest (5), and o-rings with a light coat of good quality
o-ring grease.

2. Assemble the unit as shown on the exploded view.
Assemble bonnet (4) to body (31) so that relief hole is
above outlet port.

3. Torque Table
Item Nm (Inch-Pounds)
3, 15, 21 (screws) 3,3 to 7,3 (30 to 66)
28 (element retainer) 1,3 to 1,7 (12 to 15)

CAUTION

Water vapor will pass through these units and could
condense into liquid form downstream as air temperature
drops. Install an air dryer if water condensation could have a
detrimental effect on the application.

WARNING

These products are intended for use in industrial
compressed air systems only. Do not use these products
where pressures and temperatures can exceed those listed
under Technical Data.

If outlet pressure in excess of the regulator pressure
setting could cause downstream equipment to rupture or
malfunction, install a pressure relief device downstream of
the regulator. The relief pressure and flow capacity of the
relief device must satisfy system requirements.

The accuracy of the indication of pressure gauges can
change, both during shipment (despite care in packaging)
and during the service life. If a pressure gauge is to be used
with these products and if inaccurate indications may be
hazardous to personnel or property, the gauge should be
calibrated before initial installation and at regular intervals
during use.

Before using these products with fluids other than air, for
non industrial applications, or for life-support systems
consult Norgren.

Bowl/Drain

A....Long bowl/auto drain

B....Short bowl/manual drain

NOTE

Element

1 .......5 µm

2 .......25 µm

Spring (Outlet Pressure Range) *

C....0,1 to 2 bar (1 to 30 psig)

F ....0,1 to 4 bar (1 to 60 psig)

K....0,3 to 7 bar (5 to 100 psig)

M...0,3 to 10 bar (5 to 150 psig)

Thread Form

A....PTF

B....ISO Rc

D....ISO G

IM-510.315.01

Supersedes (1/99)

(3/02)

B38 (1/2" Ported Units)

Installation & Maintenance
Instructions

Stainless Steel

Instrument Regulator

B38 - 4"" - """"

Material

Port

4....Stainless steel with Nitrile

4....1/2"

* Outlet pressure can be adjusted to pressures in excess of, and less than, those specified. Do not use these units to control pressures outside of the specified ranges.

TECHNICAL DATA

Fluid: Compressed air
Maximum pressure:

Operating temperature: -40° to +80°C (-40° to +175°F)*
* Air supply must be dry enough to avoid ice formation

Particle removal: 5 µm or 25 µm filter element
Air quality: Within ISO 8573-1, Class 3 and Class 5

Typical flow with 12 bar (175 psig) inlet pressure, 8 bar

Maximum bleed flow at 2 bar (30 psig) outlet pressure

Automatic drain connection: Will fit 1/8-27 and 1/8-28

Automatic drain operating conditions (float operated):

Nominal bowl size:

Gauge ports: 1/4" PTF
Relief port: 1/8" PTF
Materials:

SERVICE KITS

Regulator - items 3, 7, 23, 28, 29, 30

Filter - items 8, 17, 23, 25

PANEL MOUNTING DIMENSIONS

Panel mounting hole diameter: 42 mm (1.65")
Maximum panel thickness: 6 mm (0.24")

INSTALLATION

1. Shut off air pressure. Install filter/regulator in air line -

2. Connect piping to proper ports using pipe thread sealant on

3. Install a pressure gauge or plug the gage ports. Gage ports

ADJUSTMENT

1. Before applying inlet pressure to filter/regulator, turn

2. Apply inlet pressure, then turn adjustment (1) clockwise to

3. Always approach the desired pressure from a lower

4. Tighten locknut (2) to lock pressure setting.

elastomers

Manual drain: 31 bar (450 psig)
Automatic drain: 17 bar (250 psig)

at temperatures below +2°C (+35°F).

(particulates)

(115 psig) set pressure and a droop of 1,0 bar (15
psig) from set: 50 dm

(relieving models only): 1,5 cm

pipe thread

Bowl pressure required to close drain: Greater than

0,3 bar (5 psig)

Bowl pressure required to open drain: Less than

0,2 bar (3 psig)

Minimum air flow required to close drain:1 dm

(2 scfm)

Manual operation: Depress pin inside drain outlet

Long bowl with manual drain: 90 ml (3 fluid oz)
Long bowl with automatic drain: 25 ml (1 fluid oz)

Body, bonnet, bowl, adjusting screw: Stainless steel
Element: Porous polypropylene
Elastomers: Nitrile

Relieving...................................................................2787-41

Non-relieving............................................................2787-42

5 µm element ...........................................................2787-43

25 µm element .........................................................2787-44

! vertically (bowl down),
! with air flow in direction of arrow on body,
! upstream of lubricators and cycling valves,
! as close as possible to the device being serviced.

male threads only. Do not allow sealant to enter interior.

can also be used as additional outlets for regulated air.

adjustment (1) counterclockwise to remove all force on
regulating spring (6).

increase and counterclockwise to decrease outlet pressure
setting.

pressure. When reducing from a higher to a lower setting,
first reduce to some pressure less than that desired, then
bring up to the desired pressure.

With non-relieving filter/regulators, make pressure
reductions with some air flow in the system. If made
under no flow (dead-end) conditions, the
filter/regulator will trap the over-pressure in the
downstream line.

3

/s (106 scfm)

NOTE

Diaphragm

0....Relieving

1....Non-relieving

2....Relieving with wall bracket and panel nut

3....Non-relieving with wall bracket and panel nut

4....Relieving with panel nut

5....Non-relieving with panel nut

SERVICING

1. Open manual drain to expel accumulated liquids. Keep

liquids below baffle (24).

2. Replace filter element (25) when dirty (check outer surface

of element), or when pressure drop across element
exceeds 0,7 bar (10 psig).

DISASSEMBLY

1. Filter/regulator can be disassembled without removal from

air line.

2. Shut off inlet pressure. Reduce pressure in inlet and outlet

lines to zero.

3. Turn adjustment screw (1) fully counterclockwise.

4. Disassemble in general accordance with the item numbers

on exploded view. Do not remove the drains unless

3

/s (0.003 scfm)

3

/s

replacement is necessary. Remove and replace drains only
if they malfunction.

CLEANING

1. Clean parts with warm water and soap.

2. Rinse and dry parts. Blow out internal passages in body

(31) with clean, dry compressed air.

3. Inspect parts. Replace those found to be damaged.

ASSEMBLY

1. Lubricate threads of adjusting screw (1), recess of upper

sprint rest (5), and o-rings with a light coat of good quality
o-ring grease.

2. Assemble the unit as shown on the exploded view.

Assemble bonnet (4) to body (31) so that relief hole is
above outlet port. Screw baffle (24) onto centerpost until
contact is made with the filter element, then tighten an
additional 1/4 turn.

3. Torque Table

Item Nm (Inch-Pounds)
3, 8, 17 (screws) 3,3 to 7,3 (30 to 66)
10, 20 (nut) 2,3 to 2,9 (20 to 25)

CAUTION

Water vapor will pass through these units and could
condense into liquid form downstream as air temperature
drops. Install an air dryer if water condensation could have a
detrimental effect on the application.

WARNING

These products are intended for use in industrial
compressed air systems only. Do not use these products
where pressures and temperatures can exceed those listed
under Technical Data.

If outlet pressure in excess of the regulator pressure
setting could cause downstream equipment to rupture or
malfunction, install a pressure relief device downstream of
the regulator. The relief pressure and flow capacity of the
relief device must satisfy system requirements.

The accuracy of the indication of pressure gauges can
change, both during shipment (despite care in packaging)
and during the service life. If a pressure gauge is to be used
with these products and if inaccurate indications may be
hazardous to personnel or property, the gauge should be
calibrated before initial installation and at regular intervals
during use.

Before using these products with fluids other than air, for
non industrial applications, or for life-support systems
consult Norgren.

Bowl/Drain

A....Long bowl/auto drain

M...Long bowl/manual drain

Element

1 .......5 µm

2 .......25 µm

Spring (Outlet Pressure Range) *

C....0,1 to 2 bar (1 to 30 psig)

F ....0,1 to 4 bar (1 to 60 psig)

L....0,3 to 9 bar (5 to 125 psig)

M...0,3 to 10 bar (5 to 150 psig)

Thread Form

A....PTF

© Norgren 2002

IM-510.315.02

Supersedes (1/99)

(3/02)