The Burkert Type 2032 externally controlled diaphragm valve consists of a pneumatically operated piston actuator, a diaphragm, and a T-valve body. The proven and robust actuator with a plastic housing ensures reliable use in hygienic or aggressive ambient conditions. The flow-efficient valve bodies with minimal dead space enable high flow rates and a wide range of possible uses. The valve body and the diaphragm are available in all common materials and variants. The actuator features a compact, autoclavable design (PPS variant). The integration of automation units Type 8690/8697 is possible in all configuration levels and can be retrofitted.

An explosion-proof ATEX/IECEx device variant is available. The actuator is equipped with an integrated, optical position indicator as standard, and optionally a minimum/maximum stroke limiter can be installed.

Product Structure

Component	Description
1	Transparent cap with position indicator
2	Actuator cover
3	Upper pilot air port for CF B and CF I
4	Lower pilot air port for CF A and CF I
5	Diaphragm bonnet
6	Relief bore
7	Diaphragm
8	Port connection
9	Valve body
10	Body screw

General Technical Data

Product properties	Description
Block body (VH/VI)	Stainless steel block material 1.4435 according to DIN EN 10088 and 316L according to ASTM A479 / A479M (ASME BPE Table MM-2.1.1)
Diaphragm	EPDM (AD), PTFE/EPDM (EA), Advanced PTFE/EPDM (EU), laminate of GYLON® and EPDM (ER)
Actuator	PPS, PA
Diaphragm size	8...100
Standard surface quality	Internally electrically polished: Ra ≤ 0.38 μm (ASME BPE SF4 / DIN HE4). Internally mechanically polished: Ra ≤ 0.5 μm (ASME BPE SF1). (Externally Ra ≤ 1.6 μm)
Maximum pilot pressure (CF A)	7 bar (for actuator size 40 to 125 / PPS); 6 bar (for actuator size 175 and 225 / PA)
Pilot air port	Thread G 1/4, thread G 1/8 for actuator size 40 and 50
Operating medium	Neutral gases and liquids, highly purified, sterile, aggressive or abrasive mediums
Control medium	Neutral gases, air
Nominal diameter	DN 06...DN 100 (1/8"...4")
Welded connection	DIN EN ISO 1127 / ISO 4200 / DIN 11866 series B, DIN 11850 - 2 / DIN 11866 series A / DIN EN 10357 series A, ASME BPE / DIN 11866 series C
Clamp connection	DIN 32676 series A (DIN pipe), DIN 32676 series B (ISO pipe), ASME BPE

Medium Temperature

Diaphragm material	Medium temperature [°C]	Comments
EPDM (AD)	-10...+143	Steam sterilisation max. +150°C for 60 min
PTFE/EPDM (EA)	-10...+130	Steam sterilisation max. +140°C for 60 min
Advanced PTFE/EPDM (EU)	-5...+143	Steam sterilisation max. +150°C for 60 min
Laminate of GYLON® and EPDM (ER)	-5...+130	Steam sterilisation max. +140°C for 60 min

WARNING

The ambient and medium temperature range may be limited by non-ex-relevant specifications. Extending the sterilisation time is permitted, but may affect the service life and maintenance intervals.

Control Functions

Control Function	Description
Control function A (CF A)	Pneumatically operated T-valve. Normally closed by spring force.
Control function B (CF B)	Pneumatically operated T-valve. Normally opened by spring force.
Control function I (CF I)	Pneumatically operated T-valve on either side. Switching position dependent on external control.

Approvals and Conformities

• Explosion protection: ATEX (EPS 18 ATEX 2 008 X II 2G Ex h IIC T4…T2 Gb / II 2D Ex h IIIC T135 °C…T300 °C Db) and IECEx (IECEx EPS 18.0007X).
• 3-A Sanitary Standards Inc.: The products comply with 3-A Sanitary Standards Inc (3-A SSI) as per certificate (valid for the variable code PE05).
• FDA: The diaphragms comply with the Code of Federal Regulations published by the FDA.
• USP: The diaphragms are tested according to United States Pharmacopeial Convention (USP) Class VI.
• EC Regulation 1935/2004: The diaphragms are suitable for use with food and beverages.
• TA Luft: Technical instruction on air quality control (valid for the variable code PM01).

Materials

Actuator size 40…125

No.	Element	Material
1	Transparent cap	Polysulfone PSU
2	Cover	Polyphenylene sulphide PPS (standard), Polyamide PA (on request)
3	Pilot air ports	Stainless steel 1.4305
4	Piston seal	FKM
5	Socket	Sinter metal
6	Interface	Stainless steel 1.4404
7	Diaphragm	EPDM (AD), PTFE/EPDM (EA), Advanced PTFE/EPDM (EU), laminate of GYLON® and EPDM (ER)

Actuator size 175 and 225

No.	Element	Material
1	Cover	Polyamide PA
2	Pilot air ports	Stainless steel 1.4305
3	Diaphragm bonnet	Stainless steel 1.4308
4	Diaphragm	EPDM (AD), PTFE/EPDM (EA), Advanced PTFE/EPDM (EU), laminate of GYLON® and EPDM (ER)

Installation Positions

The diaphragm valve can be installed in any position, preferably with the actuator facing up. The following installation positions are recommended for the installation of T-valve bodies in circular pipelines to ensure self-draining and leakage detection:

For supply of medium:

For removal of medium:

TIP

For leakage detection, one of the relief bores in the diaphragm bonnet must be at the lowest position.