Zhejiang Naibang Valve Co.,Ltd
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Check Valve

Wafer Lug Type Double Plate Check Valve

Wafer Lug Type Double Plate Check Valve

Structural Feature Short structural length,only 1/4~1/8 of that of traditional flanged check valve; Low volume,light weight,only 1/4~1/20 of those of traditional flanged check valve; Quick valve disc closedown,low water hammer pressure; Applicable for and easily installed for vertical or...

Products Details

Wafer Lug Type Double Plate Check Valve

Description

Body and Bonnet Connection

The body and bonnet of Class150~Class900 check valves are usually with studs and nuts. And the body and bonnet of Class1500~Class2500 check valves are usually of pressurized seal design.

Seat
For carbon steel check valve, the seat is usually forged steel. The sealing surface of the seat is spray welded with hard alloy specified by the customer. Renewable threaded seat is used for NPS<10 check valves, and welded on seat can be also optional if being requested by the customer. Welded on seat is used for NPS>12 crbon steel gate valves. Forstainless steel check valve, integral seat is usually adopted, or to weld hard alloy directly integrally. Threaded or welded on seat is also optional for stainless steel check valve if being requested by the customer.


Features

Size Range

1.5" - 36" (DN40 - DN900)

Pressure  Rating For ASME

125LB,150LB, 300LB, 600LB, 900LB
  1500LB, 2500LB, Suit For ASME / MSS / API Flange

Pressure  Rating For ISO

PN10, PN16, PN25, PN40, Suit For ISO Flange

Pressure  Rating For JIS

5K,10K, 20K, Suit For JIS Flange

Body Material

CI / DI / WCB / CF8 / CF8M

Seat

NBR / EPDM / VITON / METAL (Same as Body)

Design Standard

API 594 and Manafacture's

End Facing

FF / RF


Standards

Inspection and test: API598, JB/T9092;

Design and manufacture: API594, API 6D, JB/TB8937;

Face to face and end to end: API594, API6D, DIN3202, JB/T8937;

Pressure-temperature rating: ASME B16.34, DIN2410, GB/T9124, HG20625, SH3406, JB/T74;

Pipe flange: JB/T74-90, JB/T9112-9124, SH3406, ASME B16.5, DIN2543-2548, GB/T13402, API605, ASME B16.47. 




Equipped with a professional factory, Naibang Valve is a professional manufacturer and supplier of Wafer Lug Type Double Plate Check Valve in China. If you want to buy quality product of various beautiful bags, you can get it at a cheap price from us.
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