Type

2036

Robolux multiple-way diaphragm valve

Operating Instructions

We reserve the right to make technical changes without notice.
Technische Änderungen vorbehalten.
Sous réserve de modifications techniques.
© Bürkert-Werke GmbH & Co. KG, 2011 - 2022
Operating Instructions 2211/05_EUen_00809601 / Original DE

Type 2036
Contents
1

OPERATING INSTRUCTIONS................................................ 4
1.1 Definition of term / abbreviation................................... 4
1.2 Symbols........................................................................ 4

2

AUTHORIZED USE................................................................ 5

3BASIC SAFETY INSTRUCTIONS........................................... 54

GENERAL INFORMATION..................................................... 7
4.1 Contact address........................................................... 7
4.2 Warranty....................................................................... 7
4.3 Information on the Internet........................................... 7

5

6

7

PRODUCT DESCRIPTION..................................................... 7
5.1 General description...................................................... 7
5.2 Device versions............................................................ 7
5.3 Valve self-draining........................................................ 8
5.4 Valve symbols and flow diagrams............................... 10
5.5 Valve marking............................................................. 12
5.6 Intended application area........................................... 13
STRUCTURE AND FUNCTION............................................ 13
6.1 Structure..................................................................... 13
6.2 Actuator...................................................................... 14
6.3 Position indicator........................................................ 14

7.4
7.5

Mechanical data......................................................... 15
Fluidic data................................................................. 17

8

ASSEMBLY........................................................................... 19
8.1 Before installation....................................................... 19
8.2 Installation.................................................................. 20
8.3 Pneumatic connection................................................ 21

9

ELECTRICAL CONTROL UNIT............................................ 23

10 DISASSEMBLY..................................................................... 23
11 MAINTENANCE, CLEANING............................................... 23
11.1 Servicing intervals...................................................... 24
11.2 Servicing work............................................................ 24
11.3 Cleaning..................................................................... 24
12 REPAIRS.............................................................................. 25
12.1 Replacing the diaphragm........................................... 25
13 MALFUNCTIONS................................................................. 28
14 SPARE PARTS...................................................................... 29
14.1 Order table................................................................. 29
15 TRANSPORT, STORAGE, PACKAGING.............................. 30

TECHNICAL DATA................................................................ 15
7.1 Standards and directives............................................ 15
7.2 Type label................................................................... 15
7.3 Operating conditions.................................................. 15

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Type 2036
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 newowner of the device.

1.2

DANGER!
Warns of an immediate danger.
▶ Failure to observe the warning will result in a fatal or serious injury.

WARNING!

WARNING!

Important safety information.
Failure to observe these instructions may result in hazardous
situations.
▶ The operating instructions must be read and understood.

1.1

Symbols

Definition of term / abbreviation

In these instructions, the term 'device' always refers to the Robolux
Multiway Diaphragm Valve Type 2036.
In these instructions, the term 'Diaphragm Valve' always refers to
the Robolux Multiway Diaphragm Valve Type 2036.
Ex area: stands for potentially explosive area.
Ex approval: stands for approval in the potentiallyexplosive area.

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 moderate orminor injury.
NOTE!
Warns of damage to property.
Important additional information, tips and recommendations.
Refers to information in these operating instructions or inother documentation.
▶ indicates an instruction to prevent risks.
→ designates a procedure which you must carry out.

4

englishType 2036
Authorized use

2

AUTHORIZED USE

3BASIC SAFETY INSTRUCTIONS

Improper use of the Robolux multiway diaphragm valve
Type 2036 may represent a hazard to persons, neighboring
equipment and the environment.

These safety instructions do not make allowance for any

The device is designed for controlling the flow-rate of liquid
media.
▶ In the potentially explosion-risk area the device may be used
only according to the specification on the separate Ex typelabel. For use observe the additional information enclosed withthe device together.
▶ with safety instructions for the explosion-risk area.
▶ The approved data, the operating conditions and conditions ofuse specified in the contract documents, operating instructions
and on the type label are to be observed during use.
▶ Protect device from damaging environmental influences (e.g.
radiation, humidity, steam, etc.). If anything is unclear, consult
the relevant sales office.
▶ Use the device only in conjunction with third-party devices
and components recommended and authorized by Bürkert.
▶ Correct transportation, storage, and installation, as well as
careful use and maintenance are essential for reliable andfaultless operation.
▶ Use the device only as intended.

• Local safety regulations – the operator is responsible for observing
these regulations, also in relation to the installation personnel.

• Contingencies and events which may arise during the installation,
operation, and maintenance of the devices.

DANGER!
Risk of injury from high pressure in the equipment / device.
▶ Before working on equipment or device, switch off the pressureand deaerate / drain lines.
Risk of electric shock (when electrical component installed).
▶ Before reaching into the device, switch off the power supply
and secure to prevent reactivation.
▶ Observe applicable accident prevention and safety regulations
for electrical equipment.
WARNING!
Risk of injury caused by the spring jumping out when theactuator is opened.
▶ The actuator must not be opened.

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Type 2036
Basic safety instructions
WARNING!

Generally hazardous situations.

Risk of burns.
The surface of the device may become hot during long-term
operation.
▶ Do not touch the device with bare hands.
Risk of being crushed by moving spindle ends.
▶ Install transparent cap.
Danger due to loud noises.
Depending on the operating conditions, the device may generate
loud noises. More detailed information on the likelihood of loudnoises is available from the relevant sales office.
▶ Wear hearing protection when in the vicinity of the device.
▶ Observe the noise pressure level in the technical data.
CAUTION!
Leaking medium when the diaphragm is worn.
▶ Regularly check relief bore for leaking medium.
▶ If medium is leaking out of the relief bore, change thediaphragm.
▶ If the media is hazardous, protect the area surrounding thedischarge point against dangers.

6

englishTo prevent injuries:▶ 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.
▶ Do not transport, install or remove heavy devices without theaid of a second person and using suitable auxiliary equipment.
▶ After an interruption in the electrical or pneumatic supply,
ensure that the process is restarted in a defined or controlledmanner.
▶ The device must only be operated when in a perfect condition
and in consideration of the operating instructions.
▶ Observe the safety regulations specific to the plant for application planning and operation of the device.
▶ The plant operator is responsible for the safe operation andhandling of the plant.
To prevent material damage:▶ Supply only media to the media connections that are specified
in chapter “7 Technical data” as flow media.
▶ Do not place the valve under mechanical stress (e.g. by placing objects on it or standing on it).
▶ Do not make any external alterations to the valves. Do not
apply paint to body parts or screws.

Type 2036
General information

4

GENERAL INFORMATION

5PRODUCT DESCRIPTION

4.1

Contact address

5.1

General description

Germany
Bürkert Fluid Control Systems
Sales Center
Christian-Bürkert-Str. 13-17
D-74653 IngelfingenTel. + 49 (0) 7940 - 10 91 111
Fax + 49 (0) 7940 - 10 91 448
E-mail: info@burkert.com
International
Contact addresses can be found on the final pages of the printed
operating instructions.
And also on the Internet at: country.burkert.com

4.2

Warranty

The manually or pneumatically operated Robolux multiway diaphragm valves1) have been designed as a system for the controlof ultra-pure, sterile, aggressive or abrasive media. They allow for
optimal collection, draining or distribution of critical process media.

1)In the following text the Robolux Multiway Diaphragm Valve isreferred to as 'diaphragm valve' for brevity's sake.

5.2

Device versions

The diaphragm valve can be adapted to very different usage conditions on account of its modular design.
Depending on the connection size of the diaphragm valves threeconstruction sizes are available (RV5O, RV7O, RV110).

The warranty is only valid if the diaphragm valve is used as intendedin accordance with the specified application conditions.

The valve body is made from a stainless steel block. For certain
usage conditions valve bodies made of plastic (PVDF or PP) areavailable.

4.3

High-quality diaphragms ensure complete separation of the criticalmedium from the actuator.

Information on the Internet

The operating instructions and data sheets for Types 2036 can befound on the Internet at:country.burkert.com

The diaphragm valves can be used for a large variety of control
functions. Accordingly, there is a very wide range of configuration
variations. Depending on the function the valve can have one, twoor three actuators.

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Type 2036
Product description

Pneumaticallyoperated
actuator
Diaphragm
Valve body

Ex version, with separate Ex type label:
The Ex version may be used in the potentially explosive area.
In doing so, observe the specifications on the separate Ex typelabel and the additional information enclosed with the device
together with safety instructions for the Ex area.

5.2.1

Options

The following options are available for controlling the actuatorsand feedback of the different switching positions.
• Feedback head Type 8685 with up to four position feedback
indicators in the versions 24 V , AS-Interface and EExi.
• Control head Type 8686 with up to two pilot valves andposition indicators in the versions 24 V , AS-Interface and
EExi.

5.3

Fig. 1:8

Diaphragm valve, structure and description

englishValve self-draining

The way in which self-draining takes place varies according to thevalve type. It is very important to know the flow paths for eachindividual valve before the port / connection (marked with A, B, Cor D) for draining is selected.
Contact your Bürkert sales office or our Sales Center,e-mail: info@burkert.com if you have any queries.

Type 2036
Product description
Installation positions for self-drainage:

Installation positions for self-drainage:
A

A

A
B

B

C

C
B

C

D

3C2S / 4C2S
drainage connection
B (D)

3C2S / 4C2S
drainage connection
C (A)4C4S CFdrainage connection
D
Fig. 3:

B

A

D

C

Self-draining - 4C4S CF

C

A
B
A

D

C

B
Fig. 2:

Self-draining - 3C2S / 4C2S

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Type 2036
Product description

5.4

Installation positions for self-drainage:D

3 connections, 2 seats
3C2S

D

C
A

B

Valve symbols and flow diagrams
4 connections, 2 seats
4C2S

C

A

B

4C4S DFP
drainage connection
A (C)

4C4S DFP
drainage connection
B (D)

Seat
U2

Seat
U1

D
A

D
C
A

B
Fig. 4:Self-draining - 4C4S DFP

U1Fig. 5:english

A

C
U2

B

10

Seat
U2

Seat
U1

C

U1

U2

B

Valve symbols and flow diagrams - 3C2S / 4C2S

Type 2036
Product description

4 connections, 4 seats
4C4S CFupper side
lower sideA

4 connections, 4 seats
4C4S DFP
upper side
lower side
D

A

D

B B
C C

A
C

C
Seat
U1

D

Seat
U2

Seat
L1

B

A

Seat
L2

Seat
U1

B

U1

D

B

Seat
L2

L1

C
U2

U1

B

C

Valve symbols and flow diagrams - 4C4S CF

Seat
L1

A

U2

L1

D

Seat
U2

L2

L2

Fig. 6:

D

Fig. 7:

Valve symbols and flow diagrams - 4C4S DFP

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Type 2036
Product description

5.5

Valve marking
Type label

5.5.1

Type label

Company logo

Type - Size - Design Diaphragm material
Actuator 1 - Actuator
2 - Pilot pressure

Marking and warning
notices in Ex area
OrdernumberPort connection
markings

Fig. 9:Type label

5.5.2

Port connection markings

Valve body labeling
Bürkert company logo, Orifice and connection dimensions
Material, charge, Production number / Serial number
Fig. 8:Max. medium pressure- medium temperature
Date of manufacture

Actuator orientation
marking

Valve marking

Connection dimensions

All port connections are provided with letters corresponding
to the flow diagrams (see chapter “5.4 Valve symbols and flow
diagrams”).

5.5.3

Actuator orientation marking

The actuator has a marking close to connection A as an aid toensure correct assembly.

Fig. 10: Actuator orientation marking

12

englishType 2036
Structure and function

Intended application area

6

STRUCTURE AND FUNCTION

The diaphragm valve has been designed for use with soiled andaggressive media which do not corrode the valve body and theseal materials.

6.1

Structure

5.6

The diaphragm valve consists of a pneumatically operated piston
actuator, diaphragm and multi-port valve body.

Observe the maximum pressure range according to thetype label.

Transparent cap withposition indicator• Ultra-pure, sterile, aggressive or abrasive media.

Actuator cover• Highly viscous media.

Pilot air port 4
Pilot air port 2

5.6.1
e.g.

Application areas

Pilot air port 3

 lant constructionp
luxury food and food processing industry
bottling plantchemical engineering
pharmaceutics

Pilot air port 1
Actuator body
Body screws
Guide pin
Diaphragm
Valve bodyFig. 11: Piston-controlled diaphragm valve, structure anddescription

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Type 2036
Structure and function

6.2

Actuator

6.3

The actuator has two actuator chambers that can be controlled
independently of each other and act on one body seat each(double action). Where only one actuator is in operation only one
actuator chamber is equipped with the internal functional parts.
Spring force (CFA, NC) or pneumatic pilot pressure (CFB, NO)
generates the closing force of the actuator.
The force is transmitted onto the corresponding pressure pieceand the diaphragm in each case via a spindle connected to theactuator piston.

6.2.1

Control functions (CF)Control function (CF)
2(A),(P)

1(P),(A)

Description

CF: A, pneumatically operated
open / close valve
2/2-waybidirectionalclossed by spring action

2(B),(P) CF: B, pneumatically operated
open / close valve
2/2-waybidirectional
1(P),(B)open by spring action.
Tab. 1:

14

Control functions (CF)englishPosition indicator

The position of both actuator chambers is signaled via positionindicators. Two positions are possible:• Short protrusion of the position indicator → valve closed.
• Long protrusion of the position indicator → valve open
CAUTION!
Risk of being crushed by moving spindle ends.
▶ Install transparent cap.
Long protrusion
Short protrusion

Transparent
cap removed
Fig. 12: Position indicatorType 2036
Technical data

7

TECHNICAL DATA

7.4

7.1

Standards and directives

Dimensions

The device complies with the relevant EU harmonisation legislation. In addition, the device also complies with the requirements of the laws of the United Kingdom.

Materials

Mechanical data
see data sheet

Valve body

The harmonised standards that have been applied for the conformity assessment procedure are listed in the current version of
the EU Declaration of Conformity/UK Declaration of Conformity.

s tainless steel: 1.4435/316L(other materials on request)

Diaphragm

 PDM, Advanced PTFE / EPDM, FKM,
E
Gylon / EPDM

7.2

Actuator
Housing
Pressure pieceType label

See chapter “5.5 Valve marking”.

7.3

stainless steel precision casting 1.4308
PPS (Polyphenylensulfid) and V2A

Operating conditions
Observe permitted pressure ranges given on the typelabel of the device.

Degree of protection2)

IP65 / IP67 in accordance with IEC 529 /EN 60529

Ambient temperature – +60 °C3)0higher temperatures on request

Relative humidity

max. 80 % (non-condensing)2) To comply with the degree of protection IP65 / IP67 on thepilot air port which is not required (for CFA, NC and CFB, NO),install an exhaust air line in the dry area.
3) If a control unit or a pilot valve is used, the max. ambient temperature is +55 °C.

Connections
Port connections

 elded connectionw
DIN EN ISO 1127 / ISO 4200) /DIN 11866 Series 2,
DIN 11850 Series 2 / DIN 11866 Series A
ASME BPE / DIN 11866 Series C
clamp connection
DIN 32676 Series A (DIN pipe)
DIN 32676 Series B (ISO pipe)
ASME BPE(other connections on request)

Pilot air port

G1/8

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Type 2036
Technical data
Surface qualityinterior
Ra 0.5 µm passivatedexterior Ra 1.6 µm machined
optional electro-polished(other surface finishes on request)

Noise pressure level< 70 dB (A)Installation position

 ny position; preferably connectiona
B downwards; for self-drainage see
chapter “5.3 Valve self-draining”

The service life of the device depends heavily on the conditionsof use. Especially the service life of the diaphragm depends very
heavily on the conditions of use, such as the medium, temperatures, switching frequency, pressure etc., and may vary widely inindividual cases.

7.4.1

The diaphragm seals the valve. It must be selected with care. The
choice of material should be made bearing in mind the process
medium, the temperature and the mechanical boundary conditions(e.g. operating pressure, switching frequency etc.).
The standard materials are contained in the following table.
For conformity with FDA CFR 21 Para. 177.2600 or Para.
177.1550 and USP VI certification, see “Tab. 2: Diaphragm
materials”.
Diaphragm Code Description ofmaterialmaterial

Use

FDA USP
VI

EPDM

AD

Peroxidevulcanizedethylene-propylene rubber

Oxidizing
chemicals,
steam andhot waterxx

Advanced
PTFE /EPDM

EKAdvanced
PTFE
laminated
EPDM

Most chemicals and
acids

x

x

Gylon /EPDM

ER

Gylon laminated EPDM

Most chemicals andacids, steam
and hot
water

x

x

Tab. 2:16

englishDiaphragm

Diaphragm materials

Type 2036
Technical data

7.5

Fluidic data

Media
Flow media
Media pressure
Media temperaturestainless steel / EPDM
stainless steel /Advanced PTFE
stainless steel / Gylon
Pilot medium

Pilot pressure4)

7.5.1

Pilot pressure and operation pressure for CFA, NC ltra-pure, sterile, aggressive,u(see chapter “7.4.1 Diaphragm”)
see chapter “7.5.1 Pressure ranges”

Values for stainless steel valve body

Size

Actuatorversion5)

Pilot
pressure[bar]6)

D11,
D12, D21

6...10D55

4,2...10

D11, D12,D21

6...10D55

4,2...10

D11,
D12, D21

6...7

D55

4,2...7+5 to +130 °C(max. +140 °C for 60 min.)+5 to +90 °C(no steam)+15 to +130 °C(max. +140 °C for 60 min.) eutral gases, dry air (min. 10 K
N
below min. operating temperature),
preferably unoiled
 – 10 bar (RV50, RV70)
6
6 – 7 bar (RV110)
from 4.2 bar (with reduced medium
pressure) on request

RV50

RV70

RV110

Tab. 3:
4)

Pressure ranges

 ressure values [bar]: Overpressure with respect to atmoP
spheric pressure

5)
6)

Test
criterion

Max. operationpressure [bar]6)
Advanced
Gylon /EPDM PTFE /
EPDM
EPDM

Static

7,5

7,5

5,5

Dynamic

6,5

5,5

4,5

Static

5,0

3,5

-

Dynamic

4,0

2,5

-

Static

8,0

8,0

5,5

Dynamic

6,0

6,0

5,0

Static

5,5

6,0

4,5

Dynamic

3,5

4,0

4,0

Static

7,0

7,5

6,0

Dynamic

5,0

5,5

5,0

Static

5,0

5,0

4,0

Dynamic

3,0

3,0

3,0

Pilot pressure and operation pressure

See type label.
Pressure values [bar]: Overpressure with respect to atmospheric pressure

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Type 2036
Technical data
Remarks

Pilot pressure and operation pressure for CFB, NO

Static leak-tightness:

The following graphs illustrate the required minimum pilot pressure
depending on the medium pressure for control function B.

Valve is closed (diaphragm is in contact with the body seat). One
side of the body seat is under pressure. At the given pressure noleakage takes place via the body seat.

Permitted pilot pressure range: 2 – 7 bar.

The pilot pressure should be selected to be as low as
possible to reduce wear on the diaphragm.

Valve is open and the medium is flowing through it. The downstream flow is only slightly throttled by components placeddownstream. Both sides of the body seat are under pressure.
The valve is closed (CFA, NC via spring force; CFB, NO via pilotpressure). At the given pressure the valve closes onto the bodyseat and the seal is complete.

Static leak-tightness:

Dynamic leak-tightness:

Medium pressure [bar]Dynamic leak-tightness:

RV70
static8

RV50/RV110
static
RV70
dynamic

RV50/RV110
dynamic

7
6
5
4
3
2
1
0

0

1

2

3

Range for valves with control unit

Fig. 13: Static and dynamic leak-tightness

18

english

4

5

6

7

Pilot pressure [bar]Fig. 14: Pilot pressure depending on the medium pressure

Type 2036
Assembly

8

ASSEMBLY
DANGER!

Risk of injury from high pressure in the equipment / device.
▶ Before working on equipment or device, switch off the pressure and deaerate / drain lines.
WARNING!
Risk of injury from improper assembly.
▶ Installation must only be carried out by authorized technicians and with the appropriate tools.
Risk of injury from unintentional activation of the system anduncontrolled restart.
▶ Secure system from unintentional activation.
▶ Following assembly, ensure a controlled restart.
CAUTION!
Risk of injury due to a heavy device.
A heavy device can fall down during transport or during installation and cause injuries.
▶ Transport, install and dismantle a heavy device with the helpof another person.
▶ Use appropriate tools.

8.1

Before installation→ Ensure the pipelines are flush.
→ Pay attention to the flow direction.

8.1.1

Installation position• Installation position: any, preferably with connection B
downwards.
• Installation for self-drainage of the valve body: see chapter“5.3 Valve self-draining”

8.1.2

Preparatory work

→ Clean pipelines (sealing material, swarf, etc.).
→ Support and align pipelines.

Devices with welded connection
NOTE!
Damage to diaphragm or actuator.
▶ Before welding in the valve body disassemble the actuatorand diaphragm.
Remove the actuator from the valve body:→ Move the actuator to the upper actuator position (CFA, NC:
by applying pilot pressure; CFB, NO: by removing the pilotpressure).
→ Mark the position of the actuator in relation to the valve body.
→ Unscrew the four body screws that connect the valve body withthe actuator. Remove the actuator and the diaphragm.

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Type 2036
Assembly

8.2.1

Installing the valve body

Welded connection→ Weld valve body in pipeline system.
Other valve body designs
Actuator→ Connect valve body to pipeline.

Relief bore

8.2.2

Guide pin
Body screws
Diaphragm
Valve bodyFig. 15: Assembly

8.2

Installation
WARNING!

Risk of injury from improper assembly.
Non-compliance with the tightening torques is dangerous due topossible discharge of medium and possible release of pressure.
▶ Observe the tightening torque (see “Tab. 4”).
NOTE!
When installing the device in the system, note:
The device and the relief bore must be accessible.

20

englishInstalling the actuator (welded
connection)→ Move the actuator to the upper actuator position (CFA, NC:
by applying pilot pressure; CFB, NO: by removing the pilotpressure).
→ Put the actuator / diaphragm on the valve body with correctalignment (so that the markings made previously align). In thecase of RV110 the four spacer sleeves must be inserted in thedesignated body holes (see “Fig. 19: Disassembly / assembly
the diaphragm”, page 26).
→ Tighten the diagonally opposed body screws / nuts until there
is visible, uniform mechanical contact between the valve
body, diaphragm and actuator.
→ Switch the diaphragm valve twice.
→ Move the actuator to the lower actuator position (CFA, NC:
by removing pilot pressure; CFB, NO: by applying the pilotpressure).

Type 2036
Assembly

8.3

WARNING!
Risk of injury from discharge of medium and release ofpressure.
▶ Tighten the body screws sufficiently (see “Tab. 4”).
→ Tighten body screws in diagonal pairs in three stages (approx.
1/3, approx. 2/3, 3/3 of the tightening torque), according to“Tab. 4”.
The diaphragm should be positioned and pressed evenly all
around the actuator and valve body.

WARNING!
Risk of injury from unsuitable connection hoses.
Hoses which cannot withstand the pressure and temperature
range may result in hazardous situations.
▶ Use only hoses which are authorized for the indicated pressure
and temperature range.
▶ Observe the data sheet specifications from the hose
manufacturers.

8.3.1

Tab. 4:Size

Tightening torque [Nm]

RV50

6

RV70

17

RV110

30

Tightening torque

Pneumatic connection

Connection of the pilot medium
To comply with the degree of protection IP65 / IP67 on
the pilot air port which is not required (for CFA, NC and
CFB, NO), install an exhaust air line in the dry area.

For the assignment of pilot air ports refer to the installation anddimensional drawing included with delivery of the valve. Compare
also the information given in chapter “6 Structure and function”.
The use of pneumatic hose with a minimum size of 6/4 mm is
recommended. For longer hose lengths the hose cross-sections
should be adapted accordingly.
In aggressive surroundings and in situations where
moisture could enter the actuator via the exhaust air port
or muffler the exhaust air should be collected and ducted
to a non-critical location.

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Type 2036
Assembly
Control function A:→ Connect the control medium to the pilot air port 1 and / or 3(see “Fig. 16”).
Control function B:→ Connect the control medium to the pilot air port 2 and / or 4(see “Fig. 16”).
Silencer→ Connect the silencer into the free air discharge connection(see “Fig. 16”).

Actuator 2(right)Actuator 1(left)
Pilot airport
2 (P2)

Pilot airport
4 (P4)

Pilot airport
1 (P1)

Pilot air port
3 (P3)

Fig. 16: Pneumatic connection
22

englishActuatorversionActuator 1

Actuator 2

CF

CF

Connection

Connection

D11, D55
Pilot air
P3
P1
CFA, Pilot air
CFA
CFA / CFANC
P2: air discharge
P4: air discharge(NC / NC)
D12
Pilot air
P4
P1
CFA, Pilot air
CFB
CFA / CFBNC
P2: air discharge
P3: air discharge(NC / NO)
D21
Pilot air
P3
P2
CFB, Pilot air
CFA
CFB / CFANO
P1: air discharge
P4: air discharge(NO / NC)
D22
Pilot air
P4
P2
CFB, Pilot air
CFB
CFB / CFBNO
P1: air discharge
P3: air discharge(NO / NO)
Tab. 5:

Pneumatic connection for actuator versions

CFA, NC :Valve normally closed by spring action

CFB, NO :Valve normally open by spring action

Numbers forindicating
actuator 1

Fig. 17: Cover film

Numbers forindicating
actuator 2

Type 2036
Electrical control unit

9

ELECTRICAL CONTROL UNIT
The electrical connection of the pilot valve / control unit
is described in the operating instructions for the pilot
valve / control unit.

10

DISASSEMBLY
DANGER!

Risk of injury from discharge of medium and release ofpressure.
It is dangerous to remove a device which is under pressure
due to the sudden release of pressure or discharge of medium.
▶ Before removing a device, switch off the pressure and ventthe lines.
If the valve is to be reused after removal, the actuator must
be removed before disassembly where welded bodies are
involved. For this, refer to the assembly instructions.

11

MAINTENANCE, CLEANINGDANGER!

Risk of injury from high pressure in the equipment / device.
▶ Before working on equipment or device, switch off the pressure and deaerate / drain lines.
Risk of electric shock.
▶ Before reaching into the device, 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 must only be carried out by authorized technicians and with the appropriate tools.
Risk of injury from unintentional activation of the system anduncontrolled restart.
▶ Secure system from unintentional activation.
▶ Following maintenance, ensure a controlled restart.

→ Loosen pneumatic connection.
→ Remove device.

english23

Type 2036
Maintenance, Cleaning

11.1

Servicing intervals

Check the diaphragm valves regularly for proper operation in termsof assembly, installation and operation. Take the following factors
into account when planning servicing intervals:• Operational conditions (amount of usage, improper usage),• manufacturer's specifications in the technical documentation(e.g. mechanical service life,• major system modifications.

11.2

Servicing work
Do not repair the device yourself, but replace it with anequivalent device. Repairs may be performed by the
manufacturer only.

11.2.1

The actuator of the diaphragm valve is maintenance-free provided it is used according to these operating instructions.

Wearing parts of the diaphragm valve

The diaphragm is subject to wear.
→ If leakage occurs replace the diaphragm (see chapter “12Repairs”).
A bulging diaphragm may reduce the flow rate.

24

11.3

Cleaning

NOTE!
Avoid causing damage with cleaning agents.
▶ Before cleaning, check that the cleaning agents are compatible with the device materials.
Actuator→ Clean the actuator surface using a moist cloth. Only use
cleaning agents that do not attack the actuator surface.
Valve body / diaphragm

Actuator

11.2.2

The replacement of the diaphragm is described inchapter “12 Repairs”.

english→ The valve bodies are suitable for CIP. Clean the valves using
cleaning agents that do not attack the valve body and diaphragm materials. Avoid cleaning agents with high pH values.

Type 2036
Repairs

12

REPAIRSDANGER!

Risk of injury from high pressure in the equipment / device.
▶ Before working on equipment or device, switch off the pressureand deaerate / drain lines.
Risk of electric shock.
▶ Before reaching into the device, 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 repair.
▶ Installation must only be carried out by authorized technicians
and with the appropriate tools.
▶ Observe the tightening torques.
▶ On completion of the work check valve for leaks andfunction.

12.1

Replacing the diaphragm

Required spare part
• Diaphragm12.1.1

Disassembly of the actuator anddiaphragm→ Move the actuator to the upper actuator position (CFA, NC:
by applying pilot pressure; CFB, NO: by removing the pilotpressure).
→ Mark the position of the actuator in relation to the valve body.
→ Unscrew the four body screws  that connect the valve bodywith the actuator. Remove the valve body.
→ Move the actuator to the lower actuator position (CFA, NC:
by removing pilot pressure; CFB, NO: by applying the pilotpressure).
→ Unscrew guide pin all the way.

Risk of injury from unintentional activation of the system anduncontrolled restart.
▶ Secure system from unintentional activation.
▶ Following maintenance, ensure a controlled restart.

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Type 2036
Repairs

2

Actuator
Guide pin
Body screws

1

Diaphragm
Pressure
piecesDiaphragm
Valve body

Guide pinSpacer sleeveFig. 19: Disassembly / assembly the diaphragm→ Turn the diaphragm and pressure pieces through 30° andtake them out (step 1).
Fig. 18:

26→ Take the diaphragm out of the pressure pieces sideways(step 2).

Repairs

englishType 2036
Repairs

12.1.2Assembly of actuator and diaphragm

WARNING!
Risk of injury from moving parts in the device.
▶ When applying or removing the pilot pressure on the actuator,
keep limbs and objects away from the openings of the actuator.
→ Move the actuator to the lower actuator position (CFA, NC:
by removing pilot pressure; CFB, NO: by applying the pilotpressure).

NOTE!
Damage to the diaphragm.
▶ Turn diaphragm and pressure pieces only as far as isrequired until the actuator and diaphragm screw holes are inalignment.
→ Screw guide pin all the way in (“Fig. 18”).
→ Move the actuator to the upper actuator position (CFA, NC:
by applying pilot pressure; CFB, NO: by removing the pilotpressure).

→ Insert the diaphragm into the guide of the pressure pieces.
Make sure that the four spacing sleeves are installed (see“Fig. 19”).
→ Insert the pressure pieces into the actuator. Make sure thatthe actuator spindles are fully inserted into the corresponding
recesses of the pressure pieces (see “Fig. 20”).

Guide pin

→ Turn the diaphragm and pressure pieces through approx. 30°.
2

approx. 30°

Pressure
piecesIdentification plate
diaphragm
Body seat

1

Actuator
spindleFig. 21: Assembly of the actuator

Fig. 20: Assembly pressure pieces

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Type 2036
Malfunctions→ Put the actuator / diaphragm on the valve body with correctalignment (so that the markings made previously align, or guidepin, identification plate and body seats have been aligned inparallel). In the case of RV110 the four spacer sleeves must be
inserted in the designated body holes.
→ Tighten the diagonally opposed body screws / nuts until there
is visible, uniform mechanical contact between the valve
body, diaphragm and actuator.

13

MALFUNCTIONS

Malfunction Cause / remedial action
Actuator
does notswitch.

CFB, NO: Connect the pilot air port 2 and / or 4
Pilot pressure too low
See pressure specifications on the type label.

→ Switch the diaphragm valve twice.
WARNING!
Risk of injury from discharge of medium and release ofpressure.
▶ Tighten the body screws sufficiently (see “Tab. 6”).

Medium pressure too highSee pressure specifications on the type label.
Valve is notsealed.

→ Tighten body screws in diagonal pairs in three stages(approx. 1/3, approx. 2/3, 3/3 of the tightening torque),according to “Tab. 6”.
The diaphragm should be positioned and pressed evenly all
around the actuator and valve body.

Tab. 6:28

Tightening torque [Nm]

RV50

6

RV70

17

RV110
Tightening torque30

englishMedium pressure too highSee pressure specifications on the type label.
Pilot pressure too low
See pressure specifications on the type label.

→ Move the actuator to the lower actuator position (CFA, NC:
by removing pilot pressure; CFB, NO: by applying the pilotpressure).

Size

Pilot air port interchanged7)
CFA, NC: Connect the pilot air port 1 and / or 3

Actuator is rotated by 90° and installed opposite
the valve body.
→ Guide pin, identification plate and body seatsmust be aligned in parallel (see “Fig. 21”).
Flow rate
reduced.
Tab. 7:
7)

Diaphragm bulging→ Replace diaphragm.

Malfunctions

see “Fig. 16: Pneumatic connection”.

Type 2036
Spare parts

14

SPARE PARTS

14.1

Order table

Standard diaphragm

WARNING

Diaphragm with flange forvalve body Type 2035

Risk of injury when opening the actuator.
The actuator contains a tensioned spring. If the actuator is
opened, there is a risk of injury because the spring may jump out.
▶ The actuator must not be opened.
CAUTION!
Risk of injury and / or damage by the use of incorrect parts.
Incorrect accessories and unsuitable spare parts may cause
injuries and damage the device and the surrounding area.
▶ Use original accessories and original spare parts from Bürkert only.

Size

Order numbers for diaphragms
EPDM (SAP
Code: AD),
Identificationon the diaphragm: E03
resp. E04

The diaphragm is available as a spare part for the diaphragm valve
Type 2036.

Advanced PTFE
/ EPDM (SAP
code: EK), Identification on thediaphragm: L03
resp. L07

Gylon / EPDM
(SAP code:
ER), Identification on thediaphragm:
L08

Standard diaphragm
If you have any queries, please contact your Bürkert
sales office.

RV50

236280236281291613RV70236282236283291614

RV110

236284236285291554

Diaphragm with flange for valve body Type 2035
RV50
Tab. 8:276121276122Diaphragm ordering table
Other diaphragms on request.

english29161629

Type 2036
Transport, Storage, Packaging

15

TRANSPORT, STORAGE,
PACKAGING

NOTE!
Transport damage.
Inadequately protected devices may be damaged duringtransportation.
▶ Protect the device against moisture and dirt in shock-resistant packaging during transportation.
▶ Prevent the temperature from exceeding or dropping below
the permitted storage temperature.
▶ Protect the pneumatic connections from damage by placing
protective caps on them.
Incorrect storage may damage the device.
▶ Store the device in a dry and dust-free location.
▶ Storage temperature 0 – +60 °C.
If the device is stored with tightened body screws, the diaphragm may be permanently deformed.
▶ If the device is stored for a prolonged period, slacken the
body screws.

30

englishEnvironmentally friendly disposal▶ Follow national regulations regarding disposal
and the environment.
▶ Collect electrical and electronic devices separately and dispose of them as special waste.
Further information country.burkert.com.

www.burkert.com