Wafer check valves are installed in the narrow space between two flanges. These simple check valves have no controls and are slender in shape, like a disc. When the material flows in a predetermined direction, the valve seat holds a disc, and the disc lifts from the valve seat. When material flows in the opposite direction, the disc automatically resets to stop the flow and prevent further backflow of material.
Available sizes 2" - 48"
316/304 stainless steel body and disc
316/304 stainless steel seats
Dual discs open 85 degrees
Very light weigh valve - up to 80% less weight than traditional swing-check valve
Spring loaded discs
Increased responsiveness of discs
ASME B16.1, B16.5, B16.34, B16.47 and B31.1, API 594 and 598
MSS-SP-25, MSS-SP-55, API 6A and 6D MSS-SP-61
Common Construction Materials: A105 A216 WCB / WCC A350 LF2 A352 LCC / LCB316/304 Stainless Steel
Pressure Rating: Class 150 Class 300 Class 600 Class 1500 Class 2500 PN10 PN16 PN40
- Advantages of Wafer Swing Check Valve
The wafer style valve body is compact and minimizes pipe support. This series of wafer check valves is 2 to 3 times lighter than traditional full body check valves.
To meet special applications and service conditions, these valves are available in a variety of different options such as silicone-free purge, oxygen purge, vertical service, left-hand operation, lever, counterweight and cushioning.
For media containing fibrous or corrosive materials, these valves are available with an external spring that removes the spring from the flow path. This avoids the possibility of chemical attack on the fiber-wound spring or spring.
Field-replaceable O-ring seats are available in a variety of styles and sizes for minimal maintenance.
Wafer Valve
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