Product Description

GS-C25 Lift Check Valve

Applicable Standards:               
Design EN 13709
Face to face EN 558-1
End Flanges EN 1092-1
Butt Welding ends EN 12627
Inspection and test EN 12266-1

Material: GS-C25
Size Range: DN15~DN400
Pressure Rating: PN16, PN25, PN40
Temperature Range: -29°C~425°C

Design Description:
- Bolted Bonnet and Pressure Seal
- Seat in stellite or 13%Cr
- Flange Ends
- Buttwelding Ends
- Spring Load
- One piece body
- Unidirection

Structure Check
Valve Material Didtek provide cast steel, stainless steel, special alloy, CI, DI etc
Valve Type Didtek Produce Check Valve
Valve Test 100% quantity tested before delivery
Valve Guarantee 18 months after shipments and 12 months after installed
Valve Structure Lift Check Valve
Valve Delivery 15 - 30 days
Valve Sample Sample Available by Didtek Valve
Valve Color Customer request
Valve Packing Plywood Case for Check Valve
MOQ 1 Set
Valve Certificate API6D/CE/ISO9001/ISO14001
Place of Origin Zhejiang, China (Mainland)
Delivery Detail: Shipped in 15-30 days after payment
Port Shanghai Or Ningbo
Payment Terms L/C,D/A,D/P,T/T, Western Union

Application & Function:
Didtek Lift check valve , or “non-return” valves as they are often called, are made in a variety of designs, including globe lift, piston, ball, swing, tilting disc, squib, flapper, etc. All serve the same function, which is to allow flow in one direction, while preventing flow in the other. The most common types of lift check  disc is spring-loaded, fully guided by the body bore and rests on the valve seat, integral with the body.

The valve is installed with the flow under the disc, such that the inlet line pressure will force the disc to “lift” off the seat and allow the line fluid to flow through the valve. Should the flow suddenly reverse itself, the disc will automatically and quickly, assisted by the weight of the disc and spring, be forced to the closed position, preventing the line fluid from returning. Some lift check valves have no spring and depend on the weight of the disc to start closure. These are called “horizontal lift check valves,” as they will only function properly when installed in a horizontal line. Spring loaded lift check valves may be installed in any position, both in horizontal and vertical piping applications. The spring also helps reduce noise, and minimize the effect of pulsating flow and “water hammer” lineshock.