Burkert 2037 User Manual [en, de, fr]
Type 2030, 2031, 2031 K, 2032, 2033, 2037
Piston operated diaphragm valve,
Actuator sizes 175 and 225 mm, Diameter DN65 - DN100
Kolbengesteuerte Membranventile,
Antriebsgrößen 175 und 225 mm, Nennweiten DN65 - DN100
Vannes à membrane commandée par piston, Tailles
de mécanisme 175 et 225 mm, Piston section nominale DN65 - DN100
Operating Instructions
Bedienungsanleitung
Manuel d‘utilisation
We reserve the right to make technical changes without notice.
Technische Änderungen vorbehalten.
Sous réserve de modification techniques.
© 2000 - 2014 Bürkert Werke GmbH
Operating Instructions 1403/11_EU-ML_00803968 / Original DE
Type 2030, 2031, 2031 K, 2032,
2033, 2037
Piston operated diaphragm valves type 2030, 2031, 2031 K, 2032, 2033, 2037
1 OPERATING INSTRUCTIONS ................................................................4
1.1 Definition of the Term “Device”............................................... 4
1.2 Symbols .......................................................................................4
2 AUTHORIZED USE ......................................................................................5
2.1 Restrictions .................................................................................5
3 BASIC SAFETY INSTRUCTIONS ..........................................................6
4 GENERAL INFORMATION ........................................................................7
4.1 Contact Addresses ................................................................... 7
4.2 Warranty ......................................................................................7
4.3 Information on the Internet ......................................................7
5 SYSTEM DESCRIPTION ............................................................................7
5.1 General Description .................................................................. 7
5.2 Intended Application Area ....................................................... 7
5.3 Conformity ................................................................................... 7
5.4 Standards .................................................................................... 7
6 TECHNICAL DATA ........................................................................................8
6.1 Inscription on the type label ....................................................8
6.2 Labeling of the forged bodies ................................................8
6.3 Operating Conditions ............................................................... 8
6.4 General Technical Data..........................................................12
7 STRUCTURE AND FUNCTION............................................................12
7.1 Structure ....................................................................................12
7.2 Function .....................................................................................14
8 INSTALLATION ............................................................................................ 15
8.1 Safety instructions ...................................................................15
8.2 Before installation ....................................................................15
8.3 Installation .................................................................................18
8.4 Disassembly..............................................................................20
9 ELECTRICAL CONNECTION ................................................................21
10 MAINTENANCE, CLEANING ................................................................21
10.1 Safety instructions ...................................................................21
10.2 Maintenance Work ..................................................................21
11 REPAIRS.........................................................................................................22
11.1 Safety instructions ...................................................................22
11.2 Replacing the diaphragm ......................................................23
12 MALFUNCTIONS ........................................................................................25
13 SPARE PARTS.............................................................................................26
13.1 Order table ................................................................................27
14 PACKAGING AND TRANSPORT ........................................................27
15 STORAGE ......................................................................................................28
16 DISPOSAL ..................................................................................................... 28
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3
Type 2030, 2031, 2031 K, 2032,
2033, 2037
Operating Instructions
1 OPERATING INSTRUCTIONS
The operating instructions describe the entire life cycle of the device.
Keep these instructions in a location which is easily accessible to
every user and make these instructions available to every new owner
of the device.
WARNING!
The operating instructions contain important safety
information!
Failure to observe these instructions may result in hazardous
situations.
▶ The operating instructions must be read and understood.
1.1 Definition of the Term “Device”
In these instructions, the term “device” always refers to the
diaphragm valves of Types 2030, 2031, 2031 K, 2032, 2033, 2037.
1.2 Symbols
DANGER!
Warns of an immediate danger!
▶ Failure to observe the warning may result in a fatal or serious
injury.
WARNING!
Warns of a potentially dangerous situation!
▶ Failure to observe the warning may result in serious injuries or
death.
CAUTION!
Warns of a possible danger!
▶ Failure to observe this warning may result in a medium or minor
injury.
NOTE!
Warns of damage to property!
▶ Failure to observe the warning may result in damage to the
device or the equipment.
Indicates important additional information, tips and
recommendations.
Refers to information in these operating instructions or in
other documentation.
→ designates a procedure which you must carry out.
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Type 2030, 2031, 2031 K, 2032,
2033, 2037
Authorized Use
2 AUTHORIZED USE
Non-authorized use of the devices may be dangerous to
people, nearby equipment and the environment.
▶ The diaphragm valves of Types 2030, 2031, 2031 K, 2032, 2033
and 2037 are designed for the control of contaminated, ultra-pure
or sterile media, as well as for abrasive or aggressive media (also
with higher viscosity).
▶ The devices may be used only for media which do not attack
the body and seal materials (see type label). Information on the
resistance of materials to the media is available from your Bürkert
sales office or on the Internet at: www.burkert.com.
▶ During use observe the authorized data, the operating condi-
tions and conditions of use specified in the contract documents
and operating instructions. These are described in the chapter
“5 System Description” and “6 Technical Data”.
▶ The device may be used only in conjunction with third-party
devices and components recommended and authorized by
Bürkert.
▶ Correct transportation, correct storage and installation and
careful use and maintenance are essential for reliable and faultless operation.
▶ Use the device only as intended.
2.1 Restrictions
If exporting the system/device, observe any existing restrictions.
2.1.1 Explosion Protection Approval
The explosion protection approval is only valid if you use the
modules and components authorized by Bürkert, as described in
these operating instructions.
If you make unauthorized changes to the system, the modules or
components, the explosion protection approval will also be terminated.
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5
Type 2030, 2031, 2031 K, 2032,
2033, 2037
Basic Safety Instructions
3 BASIC SAFETY
INSTRUCTIONS
These safety instructions do not make allowance for any:
• Contingencies and events which may arise during the installation,
operation and maintenance of the devices.
• Local safety regulations – the operator is responsible for observing
these regulations, also with reference to the installation personnel.
DANGER!
Danger – high pressure!
▶ Before loosening the lines and valves, turn off the pressure and
vent the lines.
Risk of electric shock!
▶ Before reaching into the device or the equipment, switch off the
power supply and secure to prevent reactivation!
▶ Observe applicable accident prevention and safety regulations
for electrical equipment!
WARNING!
Danger of bursting from overpressure!
▶ Observe the specifications on the type label for max. control
and medium pressure.
▶ Observe permitted medium temperature.
CAUTION!
Risk of burns/risk of fire if used continuously through hot
device surface!
▶ Keep the device away from highly flammable substances and media
and do not touch with bare hands.
General hazardous situations.
To prevent injury, ensure that:
▶ The system cannot be activated unintentionally.
▶ Installation and repair work may be carried out by authorized
technicians only and with the appropriate tools.
▶ After an interruption in the power supply or pneumatic supply,
ensure that the process is restarted in a defined or controlled
manner.
▶ The device may be operated only when in perfect condition and
in consideration of the operating instructions.
▶ The general rules of technology apply to application planning
and operation of the device.
▶ Do not put any loads on the body (e.g. by placing objects on it or
standing on it).
▶ Do not make any external modifications to the device bodies. Do
not paint the body parts or screws.
The diaphragm valves Types 2030, 2031, 2031 K, 2032, 2033
and 2037 were developed with due consideration given to the
accepted safety rules and are state-of-the-art. Nevertheless,
dangerous situations may occur.
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Type 2030, 2031, 2031 K, 2032,
2033, 2037
General Information
4 GENERAL INFORMATION
4.1 Contact Addresses
Germany
Bürkert Fluid Control Systems
Sales Center
Chr.-Bürkert-Str. 13-17
D-74653 Ingelfingen
Tel. + 49 (0) 7940 - 10 91 111
Fax + 49 (0) 7940 - 10 91 448
E-mail: info@de.buerkert.com
International
Contact addresses can be found on the final pages of the printed
operating instructions.
And also on the Internet at: www.burkert.com
4.2 Warranty
The warranty is only valid if the device is used as intended in accordance
with the specified application conditions.
4.3 Information on the Internet
The operating instructions and data sheets for Types 2030, 2031,
2031 K, 2032, 2033 and 2037 can be found on the Internet at:
www.buerkert.com
5 SYSTEM DESCRIPTION
5.1 General Description
The Types 2030, 2031, 2031 K, 2032, 2033 and 2037 are an externally
controlled diaphragm valve with piston drive and diaphragm seal. The
valve is self-draining in the appropriate installation position.
5.2 Intended Application Area
The diaphragm valve of Type 2030 is designed for the control of
contaminated and aggressive media. The valves of Type 2031, 2031
K, 2032, 2033 and 2037 can be used even for ultra-pure or sterile
media with a higher viscosity. The valves may only control media
which do not attack the body and seal materials (see type label).
Information on the resistance of materials to the media is available
from your Bürkert sales office.
5.3 Conformity
Type 2030, 2031, 2031 K, 2032, 2033 and 2037 conforms with the
EC Directives according to the EC Declaration of Conformity.
5.4 Standards
The applied standards, which verify conformity with the EC Directives, can be found on the EC-Type Examination Certificate and / or
the EC Declaration of Conformity.
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00147838
Type 2030, 2031, 2031 K, 2032,
2033, 2037
Technical Data
6 TECHNICAL DATA
WARNING!
Risk of injury from high pressure!
Important device-specific technical specifications are indicated on
the type label.
▶ Observe permitted pressure range on the type label of the
device.
6.1 Inscription on the type label
Control function Orifice
Type
Port connection
2030 A 65,0 EPDM PV
FLNSCH Pmed
Pilot 4,5-6bar
S/N 1060
Made in Germany
Serial number
Identification number of
the device
Fig. 1: Inscription on the type label (Example)
(Diaphragm size)
Seal material
Body material
10bar
W36LP
Date of
manufacture
Max. medium
pressure
Control pressure
Approval rating
6.2 Labeling of the forged bodies
Batch number/
manufacturer sign
Production number/
Company logo
Material
Pressure stage
Connection orifice
and pipe dimensions
order number
(F-part)
Serial number
Surface quality
code
Customer-specific
text (optional)
Fig. 2: Labeling of the forged bodies
6.3 Operating Conditions
WARNING!
Danger of bursting from overpressure!
If the device ruptures, the medium may cause injuries, chemical
burns or scalds!
▶ Do not exceed the maximum control and medium pressure.
Observe specifications on the type label!
▶ Observe permitted ambient and media temperature.
6.3.1 Allowable Temperatures
Ambient temperature for actuators:
Material
PA 175 mm / 225 mm -10 ... +50 °C
Tab. 1: Ambient temperature for actuators
Size ø Temperature
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DN 65 - 100
10
20 40 60
80
100 120
140
Type 2030, 2031, 2031 K, 2032,
2033, 2037
Technical Data
Medium temperature for body:
Body material
Temperature
Stainless steel -10 ... +140 °C
PVC (see PT-graph) -10 ... +60 °C
PVDF (see PT-graph) -10 ... +120 °C
PP (see PT-graph) -10 ... +80 °C
Tab. 2: Medium temperature for body
Medium temperature for diaphragms:
Material
Temperature Remarks
EPDM / PTFE -10 ... +130 °C Steam sterilization up to +150 °C
FKM -5 ... +130 °C
Dry up to +150 °C
Otherwise only briefly up to +150 °C
Tab. 3: Medium temperature for diaphragms
6.3.2 Maximum permitted medium pressure
Permitted medium pressure depending on the medium temperature.
8
6
4
PVC
2
Medium pressure [bar]
Temperature [°C]:
Fig. 3: Graph of medium pressure / Medium temperature
PVDF
PP
Maximum permitted medium pressure for control function A
The values apply to body made of:
• Plastic,
• VA forged steel and VA precision casting, VA block material as well
as VA tube-formed body with socket, DIN welding neck flange and
welded connection in accordance with EN ISO 1127 (ISO 4200).
Orifice
(Diaphragm
size)
DN [mm]
Actuator
size ø
[mm]
Max. sealed medium pressure [bar]
Pressure on one
side
EPDM/
PTFE EPDM/
FKM
Pressure on both
sides
PTFE
FKM
65 175 8.0 5.0 5.0 4.5
80
175 5.0 4.5 2.5 2.0
225 10.0 10.0 6.0 4.5
100 225 8.0 4.0 3.5 1.5
Tab. 4: Maximum permitted medium pressure CFA
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Type 2030, 2031, 2031 K, 2032,
2033, 2037
Technical Data
6.3.3 Control Pressure
WARNING!
Danger of bursting from overpressure!
If the device explodes, there is a risk of serious injury, chemical
burns, scalding!
▶ Do not exceed the maximum control and medium pressure.
Observe specifications on the type label!
NOTE!
Malfunction due to incorrect control pressure!
The specifications on the type label apply to valves with reduced
spring force (i.e. with lower control pressure). If you are unsure,
please contact your Bürkert sales office.
Permitted control pressure*
Orifice
(Diaphragm size)
DN [mm]
65 175 2 6
80 175 2 6
80 225 2 6
100 225 2 6
Tab. 5: Permitted control pressure
Actuator
size
ø mm
Min. control
pressure
[bar]
Max. control
pressure
[bar]
Control pressure for control function A
Orifice
(Diaphragm
size)
DN [mm]
65 175 6 4.5
80 175 6 5.0
80 225 6 5.0
100 225 6 5.0
Tab. 6: Control pressure CFA
Actuator size
[mm]
Control pressure [bar]
for medium pressure
0 bar maximum
6.3.4 Minimum Control Pressure
Required minimum control pressure depending on medium
pressure
The values apply to body made of:
• Plastic
• All models with VA forged steel, VA precision casting and VA
block material
• VA tube-formed body with socket, DIN welding neck flange and
weld-on ends in accordance with EN ISO 1127 (ISO 4200)
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* Observe the permitted pressure range according to the
type label!
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Type 2030, 2031, 2031 K, 2032,
2033, 2037
Technical Data
Control function B (CFB)
NOTE!
Important for the service life of the diaphragm!
• Do not select control pressure higher than required.
Elastomer diaphragm
10
9
8
7
6
5
4
3
2
1
0
Medium pressure [bar]
0 1.0 2.0 3.0 4.0 5.0 6.0 7.0
Diaphragm size / Actuator diameter
DN 65 / Ø 125
DN 65 / Ø 175
DN 80 / Ø 175
DN 100 / Ø 175
Control pressure [bar]
Fig. 4: Control function B - Elastomer diaphragm
PTFE - Diaphragm
10
9
8
7
6
5
4
3
2
1
0
Medium pressure [bar]
0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0
Diaphragm size / Actuator diameter
DN 65 / Ø 125
DN 65 / Ø 175
DN 80 / Ø 175
DN 100 / Ø 175
Control pressure [bar]
Fig. 5: Control function B - PTFE diaphragm
Control function I
Elastomer diaphragm
Diaphragm size / Actuator diameter
10
9
8
7
6
5
4
3
2
1
0
Medium pressure [bar]
0 1.0 2.0 3.0 4.0 5.0 6.0
DN 65 / Ø 125
DN 65 / Ø 175
DN 80 / Ø 175
DN 100 / Ø 175
Control pressure [bar]
Fig. 6: Control function I - Elastomer diaphragm
PTFE - Diaphragm
Diaphragm size / Actuator diameter
10
9
8
7
6
5
4
3
2
1
0
0 1.0 2.0 3.0 4.0 5.0 6.0 7.0
Medium pressure [bar]
DN 65 / Ø 125
DN 65 / Ø 175
DN 80 / Ø 175
DN 100 / Ø 175
Control pressure [bar]
Fig. 7: Control function I - PTFE Diaphragm
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Type 2030, 2031, 2031 K, 2032,
2033, 2037
Structure and Function
6.4 General Technical Data
Materials
Body
Type 2030 PP, PVC, PVDF
Type 2031 Stainless steel precision casting (VG),
Forged steel (VS)
Type 2031 K Stainless steel tubular body (VA)
Type 2032, 2033, 2037 Stainless steel - block material
Actuator PA
Sealing elements actuator NBR
Diaphragm EPDM, PTFE, FKM
Connections
Control air connection G1/4
Medium connection Welded connection: in accordance with
DIN EN 1127 (ISO 4200), DIN 11850 R2
other connections on request
Media
Control medium neutral gases, air
Flow media Type 2030:
contaminated and aggressive media
Type 2031, 2032, 2033 and 2037:
contaminated, aggressive, ultra-pure, sterile
media and media with higher viscosity
Installation position any position, preferably with the actuator
face up,
Tank bottom valve Type 2033: Actuator to
the bottom
7 STRUCTURE AND FUNCTION
7.1 Structure
7.1.1 2/2-way valve type 2030, 2031 and
2031 K
The piston-controlled diaphragm valve consists of a pneumatically
actuated piston actuator and a 2/2-way valve body.
Transparent cap with
position indicator
Actuator body with cover
Upper control air connection
(for CFB and CFI)
Lower control air connection
(for CFA and CFI)
Diaphragm socket
Diaphragm body
Port connection
Fig. 8: Structure and description type 2030
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Type 2030, 2031, 2031 K, 2032,
2033, 2037
Structure and Function
7.1.2 T-valve Type 2032
Transparent cap with
position indicator
Actuator cover
Actuator body
Upper control air connection
(for CFB and CFI)
Lower control air connection
(for CFA and CFI)
Diaphragm socket
T-valve body
Port connection
Fig. 9: Structure and descriptions type 2032
7.1.3 Tank bottom valve type 2033
Transparent cap with position
indicator
Actuator cover
Actuator body
Upper control air connection
(for CFB and CFI)
Lower control air connection
(for CFA and CFI)
Diaphragm socket
Port connection
Tank bottom valve with
welding flange
Fig. 10: Structure and description type 2033
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A
P
B
P
P
A
Type 2030, 2031, 2031 K, 2032,
2033, 2037
Structure and Function
7.1.4 Y-valve type 2037
Transparent cap
with position indicator
Actuator cover
Actuator body
Upper control air connection
(for CFB and CFI)
Lower control air connection
(for CFA and CFI)
Diaphragm socket
Y-valve body
Port connection
Fig. 11: Structure and description type 2037
7.2 Function
Spring force (CFA) or pneumatic control pressure (CFB and CFI) generates the closing force on the diaphragm pressure piece. The force
is transferred via a spindle which is connected to the actuator piston
and the valve is opened and closed.
7.2.1 Control functions
Control function A (CFA)
Closed by spring force in rest position
Control function B (CFB)
Opened by spring force in rest position
Control function I (CFI)
Double-acting actuator without spring
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Type 2030, 2031, 2031 K, 2032,
2033, 2037
Installation
8 INSTALLATION
8.1 Safety instructions
DANGER!
Risk of injury from high pressure in the equipment!
▶ Before loosening the lines and valves, turn off the pressure and
vent the lines.
Risk of injury due to electrical shock!
▶ Before reaching into the device or the equipment , switch off the
power supply and secure to prevent reactivation!
▶ Observe applicable accident prevention and safety regulations
for electrical equipment!
WARNING!
Risk of injury from improper installation!
▶ Installation may be carried out by authorized technicians only
and with the appropriate tools!
Risk of injury from unintentional activation of the system and
an uncontrolled restart!
▶ Secure system from unintentional activation.
▶ Following assembly, ensure a controlled restart.
8.2 Before installation
• Before connecting the valve, ensure the pipelines are flush.
• The flow direction is optional.
8.2.1 Installation position general
Installation for self-drainage of the body
It is the responsibility of the installer and operator to ensure
self-drainage.
Installation for leakage detection
One of the bores (in the actuator base) for monitoring
leakage must be at the lowest point.
8.2.2 Installation position 2/2-way valve
• The piston-controlled diaphragm valve can be installed in any
installation position, preferably with the actuator face up.
To ensure self-drainage:
→ Install body inclined by angle α = 10° bis 40° to the horizontal
(see “Fig. 12”).
→ Observe an inclination angle of 1° – 5°. Forged and cast bodies
feature a mark which must face upwards
(12 o‘clock position, see “Fig. 13”).
→ One of the bores (in the actuator base) for monitoring leakage
must be at the lowest point.
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Angle α: 10° to 40°
Inclination to the
line axis 1° ... 5°
Fig. 12: Installation position for self-drainage of the body
Type 2030, 2031, 2031 K, 2032,
2033, 2037
Installation
8.2.3 Installation position of T-valve
Type 2032
For the installation of the T-valves into circular pipelines, we recommend the following installation positions:
When media is supplied: When media is removed:
Mark for self-drainage
angle
Fig. 13: Mark for the correct installation position
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Fig. 14: Installation position of type 2032
8.2.4 Installation position of Y-valve
Type 2037
For the installation of the Y-valves into systems, we recommend the
following installation positions:
When media is supplied: When media is removed:
Fig. 15: Installation position of type 2037
Type 2030, 2031, 2031 K, 2032,
2033, 2037
Installation
8.2.5 Installation of the tank bottom valve
Type 2033
For further information on containers and welding instructions, please refer to the standard ASME VIII Division I.
It is recommended to weld the valve prior to the container
installation. However, it is possible to weld the valves to readyassembled containers.
Prior to welding, please check to ensure that:
• The tank bottom valve does not collide with other equipment compo-
nents and assembly/disassembly of the actuator is always possible.
• A minimal distance between two welding joints three times the
thickness of the container wall is adhered to.
It is recommended to weld the valve in the center of the drain
to ensure optimum draining of the container.
The diameter of the hole in the container and the flange must be equal.
The valve has two welding edges to make welding and positioning of
the valve easier. The length of the welding edges is approximately 3
mm. In case the thickness of the container wall exceeds 3 mm, the
valve must be positioned as shown in “Fig. 16”.
→ Prior to welding the valve, grind the outlet wall.
Grinding point
on tank
Fig. 16: Grinding point on tank
Prior to commencing the welding process, check the charge
number indicated on the supplied manufacturer’s certificate
3.1.B.
Procedure:
→ Position the flange into the hole so that the flange surface is
tangent to the drain surface.
→ Tack 4 welding points and check the position of the valve.
→ Weld the valve evenly to the inside and outside of the container,
with gas being supplied and using welding material compatible
with the valve’s stainless steel 316L (DIN 1.4435).
→ Allow the welds to cool down before burnishing and cleaning
them according to the applicable specifications.
These instructions assist in the installation of the tank bottom valves
and allow the prevention of deformation and softening within the
containers.
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Type 2030, 2031, 2031 K, 2032,
2033, 2037
Installation
Please observe the applicable laws and regulations of the
respective country with regard to the qualification of welders
and the execution of welding work.
8.2.6 Preparatory Work
→ Clean pipelines (sealing material, swarf, etc.).
→ Support and align pipelines.
Devices with welded body:
Before welding the body, the actuator and the diaphragm
must be removed.
8.3 Installation
If used in an aggressive environment, we recommend conveying all free pneumatic connections into a neutral atmosphere with the aid of a pneumatic hose.
WARNING!
Risk of injury from improper installation!
Non-observance of the tightening torque is dangerous as the
device may be damaged.
▶ Observe tightening torque during installation (see “Tab. 7: Tight-
ening torques for diaphragms”).
8.3.1 Devices with welded body
NOTE!
To prevent damage!
Before welding the body (only device with welded body), the
actuator and the diaphragm must be removed.
Remove actuator and diaphragm from the body:
Procedure for control function A
→ Pressurize lower control air connection with compressed air
(value as indicated on the type label) (see “Fig. 17”).
This is required to detach the diaphragm without damage from
the body.
→ Loosen fastening screws crosswise and remove actuator
together with diaphragm from the body.
→ Weld body into the pipeline.
Procedure for control functions B and I
→ Loosen fastening screws crosswise and remove actuator
together with diaphragm from the body.
→ Weld body into the pipeline.
Mount actuator and diaphragm on the body:
→ After welding in the body, smooth the body surface by grinding if
required.
→ Carefully clean the body.
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Type 2030, 2031, 2031 K, 2032,
2033, 2037
Installation
Procedure for control function A
→ Pressurize lower control air connection with compressed air
(value as indicated on the type label) (see “Fig. 17”).
→ Place actuator on the body.
→ Lightly cross-tighten the body screws until the diaphragm is
between the body and actuator.
Do not tighten the screws yet.
→ Actuate the diaphragm valve twice to position the diaphragm
correctly.
→ Without applying pressure, tighten the body screws to the permitted
tightening torque (see “Tab. 7”).
→ Pressurize lower control air connection with compressed air (value
as indicated on the type label).
→ Check the tightening torque of the screws again.
Procedure for actuator with control functions B and I:
→ Place actuator on the body.
→ Lightly cross-tighten the body screws without pressurization until
the diaphragm is between the body and actuator.
Do not tighten the screws yet.
→ Pressurize upper control air connection with compressed air (value
as indicated on the type label) (see “Fig. 17”).
→ Actuate the diaphragm valve twice.
→ Tighten the body screws to the permitted tightening torque (see
“Tab. 7”)
Upper control air connection
(for CFB and CFI)
Lower control air connection
(for SFA and SFI)
Fig. 17: Control air connection
Tightening torques for plastic body, VA tubular body (VA) and
forged body
Orifice
(Diaphragm size)
DN [mm]
65 20 30
80 30 40
100 40 50
Tab. 7: Tightening torques for diaphragms
EPDM/FKM PTFE / advanced PTFE /
Tightening torque [Nm]
(values for guidance)
laminated advanced PTFE
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19
Stainless Steel Insert (only for units without diaphragm and
casing)
If you have ordered and received a unit without diaphragm and casing,
a stainless steel insert (Id.-Nr. 648 864) will have been included with it.
Use of an EPDM / FKM diaphragm:
Insert
→ When assembling a unit with an
elastomer diaphragm (EPDM/FKM),
lay the stainless steel insert into the
groove in the pressure component.
Use of a PTFE - Diaphragm:
→ When using a PTFE diaphragm, the
insert is not required.
Type 2030, 2031, 2031 K, 2032,
2033, 2037
Installation
Upper control air connection
(for CFB and CFI)
Lower control air connection
(for CFA and CFI)
Fig. 18: Pneumatic connection
Control air hose:
Control air hoses of sizes 6/4 mm or 1/4“ can be used.
8.3.2 Connection of the control medium
Control function A:
→ Connect control medium to lower connection.
Control function B:
→ Connect control medium to upper connection.
Control function I:
→ Connect control medium to upper and lower connections.
(see “Fig. 18”)
→ Pressure on the upper connection closes the valve.
→ Pressure on the lower connection opens the valve.
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8.4 Disassembly
DANGER!
Risk of injury from discharge of medium (acid, alkali, hot
media)!
It is dangerous to remove the device under pressure due to the
sudden release of pressure or discharge of medium.
▶ Before removing a device, switch off the pressure and vent the
lines.
▶ Completely drain the lines.
Replacement of the diaphragm is described in the chapter
entitled “11 Repairs”.
Type 2030, 2031, 2031 K, 2032,
2033, 2037
Electrical connection
9 ELECTRICAL CONNECTION
The electrical connection is described in the respective
operating instructions for the pilot valve.
Note the voltage and current type as specified on the type label
(Voltage tolerance ±10%)!
10 MAINTENANCE, CLEANING
10.1 Safety instructions
DANGER!
Risk of injury from high pressure in the equipment!
▶ Before loosening the lines and valves, turn off the pressure and
vent the lines.
Risk of injury due to electrical shock!
▶ Before reaching into the system , switch off the power supply
and secure to prevent reactivation!
▶ Observe applicable accident prevention and safety regulations
for electrical equipment!
WARNING!
Risk of injury from improper maintenance!
▶ Installation may be carried out by authorized technicians only
and with the appropriate tools!
Risk of injury from unintentional activation of the system and
an uncontrolled restart!
▶ Secure system from unintentional activation.
▶ Following maintenance, ensure a controlled restart.
10.2 Maintenance Work
10.2.1 Actuator
The actuator of the diaphragm valve is maintenance-free provided it is
used according to these operating instructions.
10.2.2 Wearing parts of the diaphragm
valve
Parts which are subject to natural wear:
• Seals • Diaphragm
→ If leaks occur, replace the particular wearing parts with an appro-
priate spare part. (see Chapter “13 Spare Parts”).
A bulging PTFE diaphragm may reduce the flow-rate.
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Type 2030, 2031, 2031 K, 2032,
2033, 2037
Repairs
10.2.3 Inspection Intervals
→ Check diaphragm for wear after maximum 10
Muddy and abrasive media require correspondingly shorter
inspection intervals!
5
switching cycles.
10.2.4 Service life of the diaphragm
The service life of the diaphragm depends on the following factors:
• Diaphragm material • Medium temperature
• Medium • Actuator size
• Medium pressure • Control pressure for CFB and CFI
Protecting the diaphragm
→ For CFA match the actuator size (actuator force) to the medium
pressure to be actuated. If required, select the actuator with
reduced spring force EC04.
→ For CFB and CFI try and select the control pressure not higher
than is required to actuate the medium pressure.
10.2.5 Cleaning
Commercially available cleaning agents can be used to clean the outside.
NOTE!
Avoid causing damage with cleaning agents.
▶ Before cleaning, check that the cleaning agents are compatible
with the body materials and seals.
11 REPAIRS
11.1 Safety instructions
DANGER!
Risk of injury from high pressure in the equipment!
▶ Before loosening the lines and valves, turn off the pressure and
vent the lines.
Risk of injury due to electrical shock!
▶ Before reaching into the system , switch off the power supply
and secure to prevent reactivation!
▶ Observe applicable accident prevention and safety regulations
for electrical equipment!
WARNING!
Risk of injury from improper maintenance!
▶ Installation may be carried out by authorized technicians only
and with the appropriate tools.
▶ Observe the tightening torques.
▶ On completion of the work check valve for leaks and function.
Risk of injury from unintentional activation of the system and
an uncontrolled restart!
▶ Secure system from unintentional activation.
▶ Following maintenance, ensure a controlled restart.
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Type 2030, 2031, 2031 K, 2032,
2033, 2037
Repairs
11.2 Replacing the diaphragm
DANGER!
Risk of injury from discharge of medium (acid, alkali, hot media)!
It is dangerous to remove the device under pressure due to the
sudden release of pressure or discharge of medium.
▶ Before removing a device, switch off the pressure and vent the lines.
▶ Completely drain the lines.
▶ Disassembly and installation see “8.3.1 Devices with welded
body”.
Required spare part
• Diaphragm
Fastening types
Orifice
(Diaphragm size)
DN [mm]
65
80
100
Tab. 8: Fastening types for diaphragms
Fastening types for diaphragms
PTFE EPDM / FKM
Diaphragm with
bayonet catch
Diaphragm
screwed in
Example:
Upper control air connection
(for CFB and CFI)
Lower control air connection
(for CFA and CFI)
Mark tab for direction
of flow
Diaphragm
Body 4 fastening screws
Fig. 19: Replacement of diaphragm
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Type 2030, 2031, 2031 K, 2032,
2033, 2037
Repairs
Replacement of the diaphragm for control function A
→ Clamp the valve body in a holding device.
(applies only to valves not yet installed).
→ Pressurize lower control air connection with compressed air
(value as indicated on the type label) (see picture below “Fig.
20”).
This is required to detach the diaphragm without damage from
the body.
→ Loosen fastening screws crosswise and remove actuator
together with diaphragm from the body.
→ Unbutton or unscrew the old diaphragm. If attachment is with a
bayonet catch, remove the diaphragm by rotating it through 90°
(see “Tab. 8”).
→ Install new diaphragm in actuator (see “Tab. 8”).
→ Align diaphragm.
Observe mark tab for direction of flow!
→ Place actuator back on the body.
→ Lightly cross-tighten the body screws until the diaphragm is
between the body and actuator.
Do not tighten the screws yet.
→ Actuate the diaphragm valve twice to position the diaphragm
correctly.
→ Without applying pressure, tighten the body screws to the permitted
tightening torque (see “Tab. 7”).
→ Pressurize lower control air connection with compressed air (value
as indicated on the type label).
→ Check the tightening torque of the screws again.
Replacement of the diaphragm for control functions B and I
→ Clamp the valve body in a holding device.
(applies only to valves not yet installed).
→ Loosen the fastening screws crosswise and remove actuator
together with diaphragm from the body.
→ Unbutton or unscrew old diaphragm. If attachment is with a
bayonet catch, remove the diaphragm by rotating it through 90°
(see “Tab. 8”).
→ Install new diaphragm in actuator (see “Tab. 8”).
→ Align diaphragm.
Observe mark tab for direction of flow!
→ Place actuator back on the body.
→ Lightly cross-tighten the body screws without pressurization until
the diaphragm is between the body and actuator.
Do not tighten the screws yet.
→ Pressurize upper control air connection with compressed air (value
as indicated on the type label) (see “Fig. 17”).
→ Actuate the diaphragm valve twice.
→ Tighten the body screws to the permitted tightening torque (see
“Tab. 7”).
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Type 2030, 2031, 2031 K, 2032,
2033, 2037
Malfunctions
12 MALFUNCTIONS
Fig. 20: Control air connection
Upper control air connection
(for CFB and CFI)
Lower control air connection
(for CFA and CFI)
Malfunctions Cause / Remedial action
Actuator
does not
switch
Valve is not
sealed
Flow rate
reduced
Control connection interchanged*
CFA:
CFB:
CFI
* see “Fig. 20”
Control pressure too low
See pressure specifications on the type label.
Medium pressure too high
See pressure specifications on the type label.
Medium pressure too high
See pressure specifications on the type label.
Control pressure too low
See pressure specifications on the type label.
PTFE diaphragm bulging
Replace diaphragm.
→ Connect lower control connection
→ Connect upper control connection
→ Upper control connection: Close
Lower control connection: Open
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