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 little 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 (such as Type 8690/8697) is possible in all configuration levels. An explosion-proof ATEX/IECEx device variant is also available. The actuator is equipped with an integrated, optical position indicator as standard, and a minimum/maximum stroke limiter can be installed optionally.

General Technical Data

Feature	Specification
Block body material	Stainless steel block material 1.4435 (DIN EN 10088) and 316L (ASTM A479 / ASME BPE)
Diaphragm material	EPDM (AD), PTFE/EPDM (EA), Advanced PTFE/EPDM (EU), laminate of GYLON® and EPDM (ER)
Actuator material	PPS, PA
Diaphragm size	8 to 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)
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 Functions

• 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 (II 2G Ex h IIC T4…T2 Gb / II 2D Ex h IIIC T135 °C…T300 °C Db) and IECEx.
• 3-A Sanitary Standards: Products comply with 3-A Sanitary Standards Inc. (valid for variable code PE05).
• FDA: Diaphragms comply with the Code of Federal Regulations published by the FDA.
• USP: Diaphragms are tested according to USP Class VI.
• EC 1935/2004: Diaphragms are suitable for use with food and beverages.

Dimensions

Actuator Dimensions

T-Body with Welded Connection

T-Body with Clamp Connection

Installation and Maintenance

Installation Position

The diaphragm valve can be installed in any position, preferably with the actuator facing up. For leakage detection, one of the relief bores in the diaphragm bonnet must be at the lowest position. Ensure the pipeline is installed with an inclination angle of 1° to 5° to guarantee self-draining capabilities.

Welding Instructions

The diaphragm and actuator can be damaged when welding the valve body into the pipeline. Always remove the actuator and diaphragm from the valve body before welding. After welding, smooth the surface by sanding if necessary and clean the valve body carefully before reassembly.

Tightening Torques

When installing the actuator on the valve body, observe the specified tightening torques to prevent damage or malfunction. Tighten the body screws crosswise in three stages (approx. 1/3, then 2/3, and then full tightening torque). For example, a DN25 (Diaphragm size 25) requires 5 Nm for EPDM/FKM and 6 Nm for PTFE diaphragms.