Style CW Check Valves
Wafer Silent Check Valves
Models
Use the buttons below to view the models available in your desired body material.
Cast Iron - Retainerless Wafer Double Flange Body (ASTM A 126, Class B)
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| Size Range | Pressure Class | Body Type | Valve Style |
|---|---|---|---|
| 2" - 6" | 125 lb. / 250 lb. | Wafer | CW |
| 8" - 12" | 125 lb. | Wafer | CW |
Carbon Steel - Retainerless Wafer Double Flange Body (ASTM A 216, Grade WCB)
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| Size Range | Pressure Class | Body Type | Valve Style |
|---|---|---|---|
| 2" - 6" | 150 lb. / 300 lb. | Wafer | CW |
| 8" - 12" | 150 lb. | Wafer | CW |
316 Stainless Steel - Retainerless Wafer Double Flange Body (ASTM A 351, Grade, CF8M)
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| Size Range | Pressure Class | Body Type | Valve Style |
|---|---|---|---|
| 2" - 6" | 150 lb. / 300 lb. | Wafer | CW |
| 8" - 12" | 150 lb. | Wafer | CW |
Features
Keckley wafer silent check valves are designed to properly protect your pipeline against liquid flow reversal.
Keckley wafer silent check valves are suited for liquid applications only. For applications requiring natural gas, steam, or vacuum service please refer to our double disc wafer check valve.
Wafer silent check valves are relatively short in design and provide a low cracking pressure. The spring automatically closes the disc at zero flow, which prevents flow reversal and water hammer. The disc is fully guided at the top and bottom to prevent binding and cocking. The valve disc will open with less than 1/2 pound per square inch pressure. All sizes feature discs which lift 1/3 of an inch from their seats for every 1 inch of pipe size.
Keckley wafer silent check valves are designed for a minimum open area equal to 110% of the pipe size. Keckley offers cast iron wafer silent check valves, carbon steel wafer silent check valves, stainless steel wafer silent check valves and a variety of specially cast alloys. Keckley wafer check valves are normally stocked and available to ship immediately with metal seats. Buna-n, Viton, and EPDM seats are available and would be machined at the Keckley facility in Skokie, Illinois. The standard discs furnished in all units are stainless steel.
Keckley wafer check valves are field serviceable without the need for special tools. They are designed to ASME specifications and are tested to API 598 standards.
