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Wafer Dual Plate Check Valve
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Wafer Dual Plate Check Valve

Wafer Dual Plate Check Valve

Wafer-type double-plate check valve is mainly composed of valve body, valve disc, valve stem, spring and other parts, and adopts wafer connection.
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The wafer-type double-plate check valve can significantly reduce water hammer due to its short closing stroke and spring loading. It is mainly used in municipal, industrial and high-rise building water supply and drainage pipe networks. Because its structural length is shorter than ordinary check valves, it is easy to install.

  • Technical Data

RANGE: DN 40 TO DN 1400

Design: EN16767(EN12516-1) / API594 (ASME B16.34)
Connections: Wafer or Flanged PN6 to PN100 ACC. to EN1092-1 /PN6 to PN40 ISO7005-1 / BS 4504 sect 3.2 ANSI 125# to 600# ACC. to ASME B16.1/ B16.5 / B16.47 (JIS5/10K)
Face to Face: EN588 series 16 / API594
Testing: EN12266(ISO5208) or API598
Maximum working pressures: depending on material construction
Operating temperatures: -20ºC +120ºC (for other temperatures inquire).
Minimum back pressure for tightness: 0,3 to 0,5 Bars.
Marking: EN-19 / ASME B16.34 (MSS Sp25).
Materials: Ductile Iron, Steel, Stainless steel, superduplex,brz-alu.

steel check valve

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

  • Standards and Specifications:

1. Design and manufacturing: API 594, API 6D, JB/T 8937;

2. Structure length: API 594, API 6D, DIN 3202, JB/T 8937;

3. Pressure-temperature grade: ANSI B 16.34, DIN 2401, GB/T 9124, HG 20605, SH 3406, JB/T 74;

4. Testing and inspection: API 598, JB/T 9092;

5. Piping flange: JB/T 74～90, GB/T 9112～9124, HG 20592～20635, SH 3406, ANSI B 16.5, DIN 2543～2548, GB/T 13402, API 605, ASME B 16.47.

wafer check valves

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

  • Wafer Check Valves Structural features:

1. The structural length is short, and its structural length is only 1/4 to 1/8 of the traditional flange check valve;

2. Small size and light weight, its weight is only 1/4 to 1/20 of the traditional flange check valve;

3. The valve disc closes quickly and the water hammer pressure is small;

4. Both horizontal pipelines and vertical pipelines can be used for installation;

5. The flow channel is smooth and the fluid resistance is small;

6. Sensitive action and good sealing performance;

7. The valve disc stroke is short and the valve closing impact is small;

8. Overall structure, simple and compact, beautiful appearance;

9. Long service life and strong reliability.

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