BURKERT 333328 Type 2032 is an externally controlled diaphragm T-valve consisting of a pneumatically operated piston actuator, a diaphragm, and a T-valve body. The proven and robust actuator with a plastic housing ensures 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 actuator has a compact, autoclavable design (PPS variant).

This specific model features a 2-inch weld end connection (ASME BPE), a stainless steel body, an advanced PTFE diaphragm with EPDM backing, and a PPS actuator. It operates with Control Function A (normally closed) and is rated for a medium pressure of 0 to 10 bar and temperatures from -5 °C to 143 °C.

Key Features

• Valve body and diaphragm are available in various materials and variants
• Wetted surfaces from Ra ≤ 0.38 µm...≤ 1.6 µm (optionally electropolished)
• Available in all common connection sizes and variants
• Actuator is equipped with an integrated, optical position indicator as standard

Control Functions

Symbol	Description
CF A	Control function A (CF A) Pneumatically operated T-valve Normally closed by spring force
CF B	Control function B (CF B) Pneumatically operated T-valve Normally opened by spring force
CF I	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 made of EPDM, PTFE/EPDM, Advanced PTFE/EPDM and laminate of GYLON® and EPDM comply with the Code of Federal Regulations published by the FDA.
• USP: The diaphragms are tested according to USP Class VI.
• EC Regulation 1935/2004: The diaphragms are suitable for use with food and beverages.
• Explosion Protection: Optional ATEX/IECEx variants available (II 2G Ex h IIC T4…T2 Gb / II 2D Ex h IIIC T135 °C…T300 °C Db).

Material Specifications

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)
8	Valve body	Stainless steel

Dimensions

T-Body with welded connection

Dimensions in mm, unless otherwise stated. The following table shows the ASME BPE / DIN 11866 series C dimensions relevant to this 2-inch model family.

Diaphragm size	Port 1 - Port 2 DN	∅D1	s1	∅D2	s2	A	B	C	E	F	G	H	I
50	50...50	50.80	1.65	50.80	1.65	188.0	30	115.8	30	145	71	42	6.5
50	65...50	63.50	1.65	50.80	1.65	188.0	30	122.10	30	157	85	50	14.5
50	80...50	76.20	1.65	50.80	1.65	188.0	30	128.5	30	169	98	56	20.5

Performance Specifications

Maximum permissible operating pressure for control function A

TIP

For low operating pressures, optional variants with reduced spring force (EC04) are recommended. Pressure data [bar]: Overpressure to atmospheric pressure. Static: When closed, the valve is pressurised on one side with the maximum operating pressure.

Diaphragm size	Actuator size ∅	Pilot pressure [bar]	Maximum static operating pressure for EPDM, FKM [bar]	Maximum static operating pressure for PTFE, advanced PTFE, GYLON® [bar]
8	40 (C)	5.0...7	10	10
15	50 (D)	5.0...7	10	-
15	63 (E)	5.0...7	10	10
20	63 (E)	5.5...7	10	10
20	80 (F)	5.0...7	10	10
25	80 (F)	5.5...7	10	10
40	100 (G)	5.5...7	10	9
40	125 (H)	5.5...7	10	10
50	125 (H)	5.5...7	10	10
65	175 (K)	5.0...6	10	6
80	175 (K)	5.0...6	7	4
80	225 (L)	5.0...6	10	10
100	225 (L)	5.0...6	10	7

Installation Notes

Installation for leakage detection One of the relief bores in the diaphragm bonnet for monitoring leakages must be at the lowest position.

Installation position Any installation position, preferably with the actuator facing up. For supply or removal of medium in circular pipelines, specific installation angles are recommended to ensure self-draining capabilities.