Burkert 2031 User manual

2031-2032-2033
PISTON-OPERATED DIAPHRAGM VALVES
Instruction Manual
Operating Instructions 0812/06_EU-ML_00439692

2
INTRODUCTION
ENGLISH
2031-2032-2033
Table of contents
INTRODUCTION.............................................................................................................................................2
1.1 GENERAL SAFETY INSTRUCTIONS.........................................................................................3
1.2 DESCRIPTION OF THE DIAPHRAGM VALVE.......................................................................3
1.3 CONTROL FUNCTIONS OFFERED BY THE DIAPHRAGM VALVE.............................3
INSTALLATION................................................................................................................................................4
2.1 RECOMMENDATIONS FOR INSTALLING THE VALVE.....................................................4
2.1.1 Before installation.............................................................................................................................................4
2.1.2 During installation.............................................................................................................................................4
2.1.3 Installation for self-draining of the valve 2031 ........................................................................4
2.1.4 Installation of a tank outlet valve 2033 ..........................................................................................5
SPECIFICATIONS..........................................................................................................................................6
3.1 GENERAL SPECIFICATIONS ........................................................................................................6
3.2 ACTUATOR SPECIFICATIONS .....................................................................................................6
3.3 DIAPHRAGM SPECIFICATIONS..................................................................................................7
3.4 VALVE BODY SPECIFICATIONS .................................................................................................8
MAINTENANCE...............................................................................................................................................9
4.1 MAINTENANCE AND STORING...................................................................................................9
4.1.1 Maintenance and order codes of the spare parts.................................................................. 9
4.1.2 Storing........................................................................................................................................................................ 9
4.2 DISMANTLING THE DIAPHRAGM VALVE 2031 ............................................................... 10
4.2.1 Spring-to-close (A) or double-acting (I) valves......................................................................11
4.2.2 Spring-to-open (B) valve..........................................................................................................................12
4.3 DISMANTLING THE DIAPHRAGM VALVE 2032 OR 2033........................................... 13
ANNEX ............................................................................................................................................................. 15
5.1 CONTINUOUS TEMPERATURE CONTROL ........................................................................ 15
5.2 CONTINUOUS PRESSURE CONTROL................................................................................. 15

3
INTRODUCTION
ENGLISH
2031-2032-2033
1.1 GENERAL SAFETY INSTRUCTIONS
- Please verify that the product is complete and free from any damage.
- It is the customer’s responsibility to select an appropriate valve for the
application, ensure the unit is installed correctly and maintain the components.
- This product should only be installed and repaired by specialist staff using the
correct tools.
- Please observe the relevant safety regulations throughout the operation,
maintenance and repair of the product.
- If these instructions are ignored, no liability will be accepted and the guarantee
on the device and accessories will be invalid.
If the valve is used with dangerous fluids, insert the valve into the
process according to the legal security standards.
1.2 DESCRIPTION OF THE DIAPHRAGM VALVE
The diaphragm valve 2031, 2032 or 2033 has been designed to control the flow of fluids,
even charged or aggressive.
This 2/2-way valve is made up of :
- a valve body
- a diaphragm that isolates the fluid from the actuator (fluid and actuator never are
in contact with each other)
- a pneumatically controlled actuator.
1.3 CONTROL FUNCTIONS OFFERED BY THE DIAPHRAGM VALVE
The valve 2031, 2032 or 2033 can operate either :
- as a spring-to-close valve (A function)
- as a spring-to-open valve (B function)
- as a double-acting valve (I function).

4
INSTALLATION
ENGLISH
2031-2032-2033
2.1 RECOMMENDATIONS FOR INSTALLING THE VALVE
Insert the valve into the process according to the standard industrial practices
(preferably according to ASME or DIN 11850 standards).
2.1.1 Before installation
- Carefully clean the pipes.
- Remove all the pressures and tensible forces exerted on the valve by the pipes.
2.1.2 During installation
- Ensure the pipes are aligned.
- If the valve body must be welded onto the pipes, dismantle the valve (see § 4.2)
to separate the actuator and the diaphragm from the body to prevent them from
any damage.
- Preferably improve the surface quality by grinding the weldings.
- Carefully clean the body before mounting back the actuator and the diaphragm
(see § 4.2).
- Connect the control medium depending on the operating mode chosen:
• Function A: to the lower orifice
• Function B: to the upper orifice
• Function I: to both orifices.
2.1.3 Installation for self-draining of the valve 2031
- Incline the valve of 15° to 30° (depending on the DN) with respect to the
horizontal (see figure below)
- Install the pipes with a 3 to 5% minimum gradient in the direction of flow.
During the assembling of the valve in self draining position, the leakage detection hole
must be at the lowest point.
Self-draining in a process system is ultimately the responsibility of the
system designer and/or end user.
15°-30°

5
INSTALLATION
ENGLISH
2031-2032-2033
2.1.4 Installation of a tank outlet valve 2033
Refer to ASME VIII Division I «Boiler and pressure Vessel code» standard for further infor-
mation on tanks and welding recommendations.
We recommend to weld the tank outlet valve before mounting the tank. Nevertheless,
welding valves on mounted tanks remains possible if need be.
- Ensure the tank outlet valve is not in conflict with any other equipment and the
mounting and dismounting of the actuator is always possible.
- Ensure the minimum distance between two weld seams is 3 times the thickness
of the tank wall.
We recommend to weld the valve to the center of the tank outlet to optimize the draining.
- The diameter of the whole in the tank wall must be the same as the diameter of
the flange.
The Bürkert valve has two welding bevels to ease the welding and valve
positionning operations. The welding bevel is about 3 mm long. If the tank
thickness is more than 3 mm, position the valve as indicated in the figure below.
Grind the tank outlet wall by hand to prepare the welding operation.
Before welding, ensure the heat number corresponds to the one
indicated on the supplied manufacturer certificate 3.1.B.
- Insert the flange inside the whole so that the surfaces of the flange and the tank
outlet are tangent.
- Tack 4 weld points and check the positionning.
- Weld continuously the internal and external parts by supplying gaz and filler
material compatible with the 316L (DIN 1.4435) stainless steel the valve is made
of.
- Cool down the weld seams then polish-grind and clean them according to the
current specifications.
These instructions will help you installing the tank outlet valves and make it possible to
avoid any change in shape and stress release within the tank.
These instructions do not override the country specific legal obligations about the accredi-
tation of welding operators and the carrying out of welding operations.
Part to be grinded

6
SPECIFICATIONS
ENGLISH
2031-2032-2033
3.1 GENERAL SPECIFICATIONS
The main advantages of the valve are the following:
- Heat number indicated on each valve to ensure the traceability of the material.
- Any direction of flow.
- Self-draining (valve 2031) (see § 2.1).
- No dead volume.
- Flow optimized design.
- Valve inside design optimized to reduce the turbulences to the minimum.
- Safe dismantle of the actuator: the cover can be unscrewed without any risk (the
spring loses its tension progressively).
- Steam sterilizable.
- Autoclavable (models with PPS actuator).
3.2 ACTUATOR SPECIFICATIONS
- Material: Polyamid (PA) or phenylene polysulphide (PPS)
- Size:
- Ambient temperature:
* With pilot valve, max. +55 °C
- Control medium: neutral gases or air
- Admissible control pressure
(Function A) :
Do not use a control pressure higher than indicated to ensure the diaphragm lon-
gevity.
For more information on the reduced-strength actuators, please contact your nearest
Bürkert agent.
Size C D E F G H K L
ø [mm] 40 50 63 80 100 125 175 225
Material DN Temperature [°C]
PA All -10 to +60*
PPS ≤ 80 +5 to +140*
≥ 100 +5 to +90*
(briefly up to +140)
Material DN Pressure [bar]
PA ≥ 100 10
= 125 7
> 125 6
PPS All 7

7
SPECIFICATIONS
ENGLISH
2031-2032-2033
- Admissible control pressure (Functions B and I): see the diagram below
corresponding to your type of diaphragm and DN of the valve/size of the actuator.
Do not use a control pressure higher than indicated (function B only) to ensure the
diaphragm longevity.
3.3 DIAPHRAGM SPECIFICATIONS
- Material:
• PTFE/EPDM
• elastomer (EPDM, FPM or CSM)
- Temperature of the medium
PTFE/EPDM diaphragm
Control pressure (bar)Control pressure (bar) Control pressure (bar)
Control pressure (bar)Control pressure (bar) Control pressure (bar)
Elastomer diaphragm
Medium pressure (bar)
Medium pressure (bar)
Medium pressure (bar)
Medium pressure (bar) Medium pressure (bar)
Medium pressure (bar)
2
4
6
8
10
4 6 8 101 3 5 7 92
1
3
5
7
9
2
4
6
8
10
4 6 8 101 3 5 7 92
1
3
5
7
9
2
4
6
8
10
4 6 8 101 3 5 7 92
1
3
5
7
9
2
4
6
8
10
4 6 8 101 3 5 7 92
1
3
5
7
9
2
4
6
8
10
4 6 8 101 3 5 7 92
1
3
5
7
9
2
4
6
8
10
4 6 8 101 3 5 7 92
1
3
5
7
9
DN 8 / C DN 15 / E DN 15 / D DN 20 / E DN 20 / F DN 25 / F DN 25 / E DN 40 / H DN 50 / H DN 40/ G
DN 8 / C DN 15 / E DN 20 / F DN 25 / F DN 40 / H DN 50 / H DN 15 / D DN20 / E DN 25 / E DN 50 / G DN 40 / G
Material Temperature [°C]
PTFE ./ EPDM
EPDM
CSM
-10 to +130
FPM -5 to +150

8
SPECIFICATIONS
ENGLISH
2031-2032-2033
3.4 VALVE BODY SPECIFICATIONS
- Material:
• Forged stainless steel (DIN 1.4435 BN2 / 316L according to ASME-BPE
1997).
• Cast stainless steel (316L).
• Rolled steel (316L).
- Types of connections:
• butt-weld ends which conform to ISO 4200, SMS 3008, DIN 11850,
BS 4825-1 and JIS standards
•Clamp ends which conform to BS 4825-3, ISO 2852, DIN 32676,
SMS 3017 standards
• dairy pipe unions which conform to DIN 11851 or standards
• other connections on request.
- Nominal diameter (DN): DN8 to DN100
- Temperature of the conveyed medium: depends on the diaphragm material.
- Operating pressure:
• Static pressure: the valve being closed, the pressure is applied on one side
of the diaphragm
• Dynamic pressure: the valve being open, the pressure is applied in the
whole valve body; the valve must close itself and be tight.
Type of pressure Static Dynamic
Material of the diaphragm Elastomer PTFE / EPDM Elastomer PTFE / EPDM
DN Actuator size
8 C 10 10 10 10
15 D 8-7-
E 10 10 10 10
20 E 10 - 10 -
F 10 10 10 10
25 E 10 - 5 -
F 10 10 10 7
40 G 10 10 6,5 5,5
H 10 10 10 10
50 G 10 - 5 -
H 10 10 7,5 7
80 K 5 4,5 2,5 2
L 10 10 6 4,5
100 L 8 4 3,5 1,5

9
MAINTENANCE
ENGLISH
2031-2032-2033
4.1 MAINTENANCE AND STORING
4.1.1 Maintenance and order codes of the spare parts
- Regularly check if the diaphragm is not worn. Refer to the table below to have
the order code of the diaphragm corresponding to your valve (CSM diaphragms on
request).
If your process uses muddy or abrasive fluids or fluids reaching high temperatures,
the diaphragm must be checked often.
- The gaskets (see figure hereafter) can also be replaced: refer to the table below
to have the order code (ident. no.) of the gasket set corresponding to your valve.
4.1.2 Storing
If the valve is stored for a long time, unscrew the body screws to avoid permanent change
in shape of the diaphragm.
DN of body
Order codes for the diaphragms
EPDM diaphragm FPM diaphragm PTFE / EPDM diaphragm
8 642147 640597 643648
15 642140 640598 636336
20 642141 640599 643234
25 642142 640600 643235
40 643645 643653 643659
50 643646 643656 643660
80 650082 650083 650087
100 650084 650085 650088
Actuator size DN of body
Order codes for the gaskety sets
PPS actuator PA actuator
C 8 011465 -
D 15 011477 011426
E 15, 20, 25 011488 011440
F 20, 25 011492 011448
G 40, 50 012127 012125
H 40, 50 011494 011464
K, L Please contact your Burkert agent

10
MAINTENANCE
ENGLISH
2031-2032-2033
4.2 DISMANTLING THE DIAPHRAGM VALVE 2031
Before dismantling or opening the valve, turn-off the medium and control medium
and depressurize the pipes.
Dismantling security : the cover can be unscrewed without any risk (the spring loses its
tension progressively).
Orifices (female
thread G1/4“)
Diaphragm
Valve body
4 fixing screws
Gasket set
Actuator

11
MAINTENANCE
ENGLISH
2031-2032-2033
4.2.1 Spring-to-close (A) or double-acting (I) valves
- Apply the control pressure indicated on the label to the lower orifice of the valve:
the diaphragm separates from the body.
- Unscrew the 4 fixing screws in an alternating pattern and remove the valve actuator.
- Remove the pressure.
- Remove the diaphragm:
• For DN15 and 20, remove the elastomer diaphragm.
• For DN > 20, unscrew the elastomer diaphragm.
• For a PTFE/EPDM diaphragm, turn a quarter turn to release the bayonet.
- Place back the new diaphragm so that the fixing holes are aligned with those of
the diaphragm (screw home if necessary).
- Apply the control pressure indicated on the label to the lower orifice of the valve.
- Place back the actuator and the screws.
- Screw in an alternating pattern until the actuator is in its proper place, without
tightening.
- Actuate the valve twice so that the diaphragm positions itself correctly.
- Remove the pressure then tighten the screws in an alternating pattern to the
torque rating (in Nm) specified below:
- Apply again the control pressure indicated on the label to the lower orifice of the
valve.
- Check the torque rating of the 4 screws. Tighten if necessary.
For 3A approved products, please use only sterile food grade lubricant
complying with CFR 21 Part 178.3570.
DN Material of the diaphragm
Elastomer PTFE/EPDM
8 2 2,5
15 3,5 4
20 4 4,5
25 5 6
40 8 10
50 12 15
80 30 55
100 40 50

12
MAINTENANCE
ENGLISH
2031-2032-2033
4.2.2 Spring-to-open (B) valve
- Unscrew the 4 fixing screws in an alternating pattern and remove the actuator.
- Apply the control pressure indicated on the label to the upper orifice of the
valve: the diaphragm moves forward.
- Remove the diaphragm:
• For DN15 and 20, remove the elastomer diaphragm.
• For DN > 20, unscrew the elastomer diaphragm.
• For a PTFE/EPDM diaphragm, turn a quarter turn to release the bayonet.
- Place back the new diaphragm so that the fixing holes are aligned with those of
the diaphragm (screw home if necessary).
- Remove the pressure.
- Place back the actuator and the screws.
- Screw in an alternating pattern until the actuator is in its proper place, without
tightening.
- Apply the pressure again and actuate the valve twice so that the diaphragm
positions itself correctly.
- Remove the pressure then tighten the screws in an alternating pattern to the
torque rating (in Nm) specified below:
- Apply again the control pressure indicated on the label to the upper orifice of the
valve.
- Check the torque rating of the 4 screws. Tighten if necessary.
DN Material of the diaphragm
Elastomer PTFE/EPDM
8 2 2,5
15 3,5 4
20 4 4,5
25 5 6
40 8 10
50 12 15
80 30 55
100 40 50

13
MAINTENANCE
ENGLISH
2031-2032-2033
4.3 DISMANTLING THE DIAPHRAGM VALVE 2032 OR 2033
Before dismantling or opening the valve, turn-off the medium and control medium
and depressurize the pipes.
Dismantling security : the cover can be unscrewed without any risk (the spring loses its
tension progressively).
Valve body
Nuts
Actuator

14
MAINTENANCE
ENGLISH
2031-2032-2033
- Apply the control pressure indicated on the label to the lower orifice of the valve:
the diaphragm separates from the body.
- Unscrew the 4 nuts in an alternating pattern and remove the valve actuator.
- Remove the pressure.
- Remove the diaphragm:
• For DN15 and 20, remove the elastomer diaphragm.
• For DN > 20, unscrew the elastomer diaphragm.
• For a PTFE/EPDM diaphragm, turn a quarter turn to release the bayonet.
- Place back the new diaphragm so that the fixing holes are aligned with those of
the diaphragm (screw home if necessary).
- Apply the control pressure indicated on the label to the lower orifice of the valve.
- Place back the actuator and the nuts.
- Screw in an alternating pattern until the actuator is in its proper place, without
tightening.
- Actuate the valve twice so that the diaphragm positions itself correctly.
- Remove the pressure then tighten the nuts in an alternating pattern to the
torque rating (in Nm) specified below:
- Apply again the control pressure indicated on the label to the lower orifice of the
valve.
- Check the torque rating of the 4 nuts. Tighten if necessary.
For 3A approved products, please use only sterile food grade lubricant
complying with CFR 21 Part 178.3570.
DN Material of the diaphragm
Elastomer PTFE/EPDM
8 2 2,5
15 3,5 4
20 4 4,5
25 5 6
40 8 10
50 12 15
80 30 55
100 40 50

15
ANNEX
ENGLISH
2031-2032-2033
24 V=
+
-
910
78
6
5
34
12
+-+- +-
24 V=
+
-
1
R1
9
10
78
6
5
34
12
+-+- +-
32
1
5.1 CONTINUOUS TEMPERATURE CONTROL
Between the Top Control 8630 mounted on a valve 2031 and the temperature sen-
5.2 CONTINUOUS PRESSURE CONTROL
Between the Top Control 8630 mounted on a valve 2031 and the pressure
transmitter 8323.
Jumper
Valve 2031
and Top Con-
trol 8630
8323
Valve 2031 and
Top Control 8630
Jumper
Pt100
Setpoint+
Setpoint-
Setpoint+
Setpoint-

16
ANNEX
ENGLISH
2031-2032-2033

2031-2032-2033
KOLBENGESTEUERTE MEMBRANVENTILE
Bedienungsanleitung

2
EINFÜHRUNG
DEUTSCH
2031-2032-2033
Table des matières
EINFÜHRUNG .................................................................................................................................................2
1.1 ALLGEMEINE SICHERHEITSANWEISUNGEN.....................................................................3
1.2 BESCHREIBUNG DES MEMBRANVENTILS .........................................................................3
1.3 WIRKUNGSWEISEN EINES MEMBRANVENTILS...............................................................3
INSTALLATION................................................................................................................................................4
2.1 HINWEISE FÜR DEN EINBAU DES MEMBRANVENTILS...............................................4
2.1.1 Vor dem Einbau..................................................................................................................................................4
2.1.2 Während des Einbaus...................................................................................................................................4
2.1.3 Einbau zur Selbstentleerung des Ventils 2031 ...................................................................... 4
2.1.4 Einbau des Bodenablassventils 2033.............................................................................................5
TECHNISCHE DATEN .................................................................................................................................6
3.1 ALLGEMEINE TECHNISCHE DATEN ........................................................................................6
3.2 TECHNISCHE DATEN DES ANTRIEBS ...................................................................................6
3.3 TECHNISCHE DATEN DER MEMBRAN ...................................................................................7
3.4 TECHNISCHE DATEN DES VENTILS........................................................................................8
WARTUNG.........................................................................................................................................................9
4.1 WARTUNG UND LAGERUNG........................................................................................................9
4.1.1 Wartung und Ident.-Nr. der Ersatzteile ............................................................................................9
4.1.2 Lagerung .................................................................................................................................................................9
4.2 AUSBAU DES MEMBRANVENTILS 2031............................................................................ 10
4.2.1 Ventil mit Wirkungsweise A oder I...................................................................................................11
4.2.2 Ventil mit Wirkungsweise B...................................................................................................................12
4.3 AUSBAU DES MEMBRANVENTILS 2032 ODER 2033 ................................................. 13
ANHANG ......................................................................................................................................................... 15
5.1 ANSCHLUSS-BEISPIEL: PNEUMATISCHE TEMPERATURREGELUNG .............. 15
5.2 ANSCHLUSS-BEISPIEL: PNEUMATISCHE DRUCKREGELUNG............................. 15

3
EINFÜHRUNG
DEUTSCH
2031-2032-2033
1.1 ALLGEMEINE SICHERHEITSANWEISUNGEN
- Überprüfen Sie bitte, ob das Gerät vollständig und nicht beschädigt ist.
- Für die Auswahl des geeigneten Ventils und für seine korrekte Installation sowie
Wartung ist der Kunde verantwortlich.
- Dieses Gerät sollte nur durch Fachpersonal unter Verwendung adäquater
Werkzeuge installiert bzw. repariert werden.
- Beachten Sie bitte die relevanten Sicherheitsbestimmungen zum Betrieb, zur
Wartung und zur Reparatur des Geräts.
- Wenn diese Anweisungen nicht befolgt werden, wird keinerlei Haftung
übernommen und die Garantie für das Gerät erlischt.
Bei Verwendung in gefährlichen Flüssigkeiten muss der Einbau des
Ventils in den Prozess gemäß den üblichen Sicherheits-Normen
durchgeführt werden.
1.2 BESCHREIBUNG DES MEMBRANVENTILS
Das Membranventil 2031, 2032 oder 2033 dient dazu, den Durchfluss einer Flüssigkeit,
auch abrasive und/oder aggressive Flüssigkeiten, zu stellen.
Das 2/2-Wege-Ventil besteht aus:
- einem Ventilgehäuse
- einer Membran, die das Medium vom Antrieb trennt (Medium und Antrieb
kommen nie in Berührung)
- einem pneumatisch betätigten Antrieb.
1.3 WIRKUNGSWEISEN EINES MEMBRANVENTILS
Das Ventil 2031, 2032 oder 2033 kann entweder:
- in Ruhestellung durch Federkraft geschlossen (Wirkungsweise A) arbeiten
- in Ruhestellung durch Federkraft geöffnet (Wirkungsweise B) arbeiten
- doppeltwirkend (Wirkungsweise I) arbeiten.

4
INSTALLATION
DEUTSCH
2031-2032-2033
2.1 HINWEISE FÜR DEN EINBAU DES MEMBRANVENTILS
Bauen Sie das Ventil in den Prozess gemäß den üblichen Industrie-Normen ein
(vorzugsweise ASME oder DIN 11850).
2.1.1 Vor dem Einbau
- Die Rohrleitungen sorgfältig reinigen.
- Druck- und Zugkräfte, die die Rohrleitungen auf das Ventil ausüben, beseitigen.
2.1.2 Während des Einbaus
- Auf fluchtende Rohrleitungen achten.
- Soll das Gehäuse an die Rohrleitung geschweißt werden, das Ventil zuerst
abbauen (siehe § 4.2) und den Antrieb und die Membran vom Gehäuse
entfernen, damit sie keine Beschädigung erleiden.
- Den Oberflächenzustand, vorzugsweise durch Abschleifen, verbessern.
- Das Gehäuse sorgfältig reinigen, bevor der Antrieb und die Membran
zurückgesetzt werden (siehe § 4.2).
- Das Steuermedium gemäß Wirkungsweise anschliessen:
• Wirkungsweise A: am unteren Anschluss
• Wirkungsweise B: am oberen Anschluss
• Wirkungsweise I: an beiden Anschlüssen.
2.1.3 Einbau zur Selbstentleerung des Ventils 2031
- Das Ventil um 15-30° (entsprechend der Nennweite) gegenüber der
Horizontalen neigen (siehe folgende Abb.):
- Die Rohrleitungen mit einer Steigung von 3 bis 5% in Strömungsrichtung einbauen.
Beim Einbau des Ventils in Selbstentleerungstellung muss die Bohrung zur Überwachung
der Leckage am tiefsten Punkt sein.
Die korrekte Gestaltung der Selbstentleerung liegt in der Verantwortung
des für den Entwurf der Anlage Zuständigen.
15-30°