BURKERT 20078655 Type 2933 Manually Operated Diaphragm Valve

Question 1

1What is the difference between the Burkert Type 2933 and Type 2973 diaphragm valves?

Answer

The primary difference between these models is the actuator functionality regarding stroke limitation. The Burkert Type 2933 is fitted with a minimum stroke limiter, whereas the Type 2973 is equipped with both minimum and maximum stroke limiters as well as a locking mechanism. Both models feature a standard 2/2-way valve body design.

Question 2

2What are the maximum pressure ratings for the Burkert Type 2933 diaphragm valve?

Answer

The maximum permitted medium pressure for the Burkert Type 2933 is up to 10 bar, depending on the diaphragm size. Diaphragm sizes 8 through 40, as well as 65 through 80, are rated for 10 bar. Size 50 is rated for 7 or 10 bar, and size 100 is limited to a maximum of 6 bar.

Question 3

3What hygiene and explosion protection certifications does the Burkert Type 2933 hold?

Answer

The Burkert Type 2933 holds multiple certifications for both sanitary applications and hazardous environments. For hygiene, it complies with 3-A Sanitary Standards, FDA, USP Class VI, and EC Regulation 1935/2004. For explosion protection, it is ATEX and IECEx certified for use in Zone 1/21 and Zone 2/22.

Question 4

4What materials are available for the valve body and diaphragm of the Type 2933?

Answer

The Type 2933 valve body is available in forged stainless steel (VS), tube valve body (VP), cast valve body (VG), and plastics including PVC-C, PVC-U, PP, and PVDF. The diaphragm material options include EPDM (AD), PTFE/EPDM (EA), advanced PTFE/EPDM (EU), and a laminate of GYLON® and EPDM (ER).

Question 5

5What is the permissible medium temperature range for the Burkert Type 2933?

Answer

The overall medium temperature range for the Burkert Type 2933 is -10 °C to +150 °C, but the exact limit depends strictly on the diaphragm material selected. Specifically, EPDM diaphragms are rated for -10 °C to +143 °C, while PTFE/EPDM diaphragms are rated for -10 °C to +130 °C.

Question 6

6What body configurations are available in the Burkert 293x and 297x manually operated valve series?

Answer

The Burkert 293x and 297x series are available in three distinct body configurations to suit different piping requirements. These include a standard 2/2-way valve body (Types 2933 and 2973), a T-valve body (Types 2934 and 2974), and a tank bottom body (Types 2935 and 2975).

Question 7

7What is the nominal diameter range for the Burkert Type 2933 valve?

Answer

The Burkert Type 2933 diaphragm valve is available in nominal diameters ranging from DN 06 to DN 100. This corresponds to imperial connection sizes from 1/8" up to 4".

Product properties	Details
Diaphragm size	8...100
Valve body material	Forged stainless steel (VS), Tube valve body (VP), Cast valve body (VG), Plastic (PVC-C, PVC-U, PP, PVDF)
Diaphragm material	EPDM (AD), PTFE/EPDM (EA), advanced PTFE/EPDM (EU), laminate of GYLON® and EPDM (ER)
Actuator material	Stainless steel/PPS, PPS/PPS, stainless steel/stainless steel
Medium temperature	EPDM: -10...+143 °C; PTFE/EPDM: -10...+130 °C
Nominal diameter	DN 06...DN 100 (1/8"...4")

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, PTFE/EPDM, advanced PTFE/EPDM, GYLON®/EPDM

Parameter	Value
Diaphragm size	8 to 100
Maximum medium pressure	Up to 10 bar
Medium temperature	-10 °C to +150 °C (depending on material)
Nominal diameter	DN 06 to DN 100 (1/8" to 4")

Model	Price	MPN
Type 2933 2/2-way valve body	Contact us	20078655
Type 2934 T-valve body	Contact us	—
Type 2935 Tank bottom body	Contact us	—
Type 2973 2/2-way valve body with stroke limiters	Contact us	—
Type 2974 T-valve body with stroke limiters	Contact us	—
Type 2975 Tank bottom body with stroke limiters	Contact us	—

BURKERT 20078655 Type 2933 Manually Operated Diaphragm Valve

Product Variants

General Technical Data

Approvals and Conformities

Material Specifications

Performance Specifications

Frequently asked questions

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Diaphragm size	EPDM/FKM (bar)	PTFE/advanced PTFE/GYLON® (bar)
8...40	10	10
50	7 / 10	7 / 10
65...80	10	10
100	6	6

BURKERT 20078655 Type 2933 Manually Operated Diaphragm Valve

Product Variants ​

General Technical Data ​

Approvals and Conformities ​

Material Specifications ​

Performance Specifications ​

Frequently asked questions

Related Products

20007953 Type 2032 Pneumatic T-Diaphragm Valve

20015289 2032 Pneumatic T-Diaphragm Valve with Plastic Actuator

20026216 2104 Pneumatic T-Diaphragm Valve

20033099 Type 2104 Diaphragm T-Valve, Stainless Steel

Product Variants

General Technical Data

Approvals and Conformities

Material Specifications

Performance Specifications