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 feature minimal dead space, enabling high flow rates and a wide range of possible uses in the food, beverage, biotechnology, and pharmaceutical industries.

The valve body and the diaphragm are available in all common materials and variants. The actuator has a compact, autoclavable design (PPS variant). The integration of automation units (such as Type 8690/8697) is possible in all configuration levels and can be retrofitted. An explosion-proof ATEX/IECEx device variant is also available.

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 / ASME BPE
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)
Maximum pilot pressure	7 bar (for actuator size 40...125 / PPS) 6 bar (for actuator size 175 and 225 / PA)
Operating medium	Neutral gases and liquids, highly purified, sterile, aggressive or abrasive mediums
Port connection	Welded connection (DIN EN ISO 1127, ASME BPE, etc.), Clamp connection (DIN 32676, ASME BPE)

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

• 3-A Sanitary Standards Inc.: The products comply with 3-A Sanitary Standards Inc (3-A SSI) as per certificate.
• FDA: The diaphragms comply with the Code of Federal Regulations published by the FDA (Food and Drug Administration, USA).
• 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.
• Explosion Protection: ATEX (II 2G Ex h IIC T4…T2 Gb / II 2D Ex h IIIC T135 °C…T300 °C Db) and IECEx approved variants available.

Materials

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, PTFE/EPDM, Advanced PTFE/EPDM, laminate of GYLON® and EPDM
8	Valve body	Stainless steel

Pressure and Temperature Limits

Do not exceed the maximum permissible pilot pressure or maximum permissible operating pressure. The ambient and medium temperature range may be limited by non-ex-relevant specifications. Always observe the specifications on the type label.

Maximum Permissible Operating Pressure (Control Function A)

The values are valid for valve bodies made from stainless steel.

Diaphragm size	Actuator size	Pilot pressure [bar]	Max operating pressure EPDM, FKM (Dynamic)	Max operating pressure PTFE, GYLON® (Dynamic)
8	40 (C)	5.0–7	10 bar	10 bar
15	63 (E)	5.0–7	10 bar	10 bar
20	80 (F)	5.0–7	10 bar	10 bar
25	80 (F)	5.5–7	10 bar	7.5 bar
40	125 (H)	5.5–7	10 bar	10 bar
50	125 (H)	5.5–7	8 bar	7 bar
65	175 (K)	5.0–6	8 bar	5 bar
80	225 (L)	5.0–6	10 bar	7 bar
100	225 (L)	5.0–6	8 bar	4 bar