BURKERT 20143365 Type 2933 manually operated diaphragm valve consists of a manually operated actuator, a diaphragm, and a 2-way valve body. The manual actuator with a plastic or stainless steel handwheel is available with a diaphragm bonnet made of stainless steel or plastic, ensuring reliable use in hygienic or aggressive ambient conditions. The flow-optimized valve body with minimum dead space enables high flow values and a wide range of possible applications.

The actuator features a compact, autoclavable design and is equipped with an integrated visual position indicator, a reproducible stroke scale, and an adjustable closing limiter. An explosion-proof ATEX/IECEx device variant is also available for hazardous environments.

General Technical Data

Product Properties	Description
Forged steel valve body (VS)	Forged stainless steel 1.4435 in accordance with BN2 DIN EN 10222-5, F316L in accordance with ASTM A182/A182M and 316L in accordance with ASME BPE
Tube valve body (VP)	Stainless steel tube 1.4435-BN2 / UNS S31603 (316L) according to DIN 11866, ASTM A269 / A270, DIN EN 10217-7 / 10216-5
Cast valve body (VG)	Stainless steel precision casting 1.4435 / 316L
Plastic valve body	PVC-C, PVC-U, PP, PVDF
Diaphragm	EPDM (AD), PTFE/EPDM (EA), advanced PTFE/EPDM (EU), laminate of GYLON® and EPDM (ER)
Actuator	Stainless steel/PPS, PPS/PPS, stainless steel/stainless steel
Diaphragm size	8...100
Operating medium	Neutral gases and liquids, highly purified, sterile, aggressive or abrasive mediums
Ambient temperature	-10...+130 °C (short-term up to +150 °C), autoclavable

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 suitable for zone 1/21 and zone 2/22.
• 3-A Sanitary Standards Inc.: Products comply with 3-A SSI as per certificate.
• FDA: Diaphragms comply with the Code of Federal Regulations published by the FDA.
• USP: Diaphragms are tested according to USP Class VI.
• EC Regulation 1935/2004: Suitable for use with food and beverages.

Material Specifications

No.	Element	Material
1	Handwheel	Polyphenylene sulphide (PPS), stainless steel 1.4308
2	Visual position indicator	Polyamide (PA), Stainless steel 1.4305
3	Valve spindle	Stainless steel 1.4305
4	Diaphragm bonnet	Stainless steel 1.4308, polyphenylene sulphide (PPS)
5	Diaphragm	EPDM (AD), PTFE/EPDM (EA), advanced PTFE/EPDM (EU), laminate of GYLON® and EPDM (ER)

Dimensions

Manual Actuator (Diaphragm size 65...100)

Diaphragm size	H1	H2	∅ B
65	182	152	272
80	205	163	272
100	207	161	272

(Note: Dimensions in mm, unless otherwise stated. Refer to the full datasheet for comprehensive dimensions across all body types and connection variants.)

Performance Specifications

Maximum Permitted Medium Pressure

Diaphragm size	Maximum permitted medium pressure [bar] (EPDM/FKM)	Maximum permitted medium pressure [bar] (PTFE/advanced PTFE/GYLON®)
8 to 40	10	10
50	7 / 10	7 / 10
65 to 80	10	10
100	6	6

Pressure Temperature Diagram for Plastic Body

This information is important for material selection. Observe the permissible operating pressure depending on the medium temperature.

Safety and Installation

WARNING: High Pressure and Escaping Medium

Risk of injury due to high pressure and escaping medium. Switch off the pressure before working on the device or system. Vent or empty the lines.

Installation Position

The installation position is generally arbitrary, preferably with the actuator facing up. To ensure self-draining, the angle of inclination should correspond to the angle of inclination of the pipeline (recommended according to ASME BPE). The marking on the port connection of the valve body serves as an orientation aid and must point upwards.

Maintenance Note

Medium may leak out if the diaphragm is worn. Inspect the relief bore for any medium leakages regularly. Change the diaphragm if there is escaping medium.