Lucky6s - Model API 6D -Check Valves

A check valve is also simple to troubleshoot and maintain, with top-entry access to all valve internals.

 

Check valves have a bolted cover and a free-swinging clapper in their standard configuration. The closing member that responds to the flow conditions is the clapper.

 

Check valves are commonly used in water and wastewater systems due to their simple construction, low-pressure drop across the valve, and field serviceability. Swing check valves with metal-to-metal seats are available.

 

Check Valves are the most commonly specified check valve for municipal/industrial water and wastewater applications due to their rugged construction and full flow area. Its smooth, unrestricted flow design can save money on pumping costs when compared to other check valves with fewer ports.

The check valve’s design feature prevents backflow in a fraction of a second. The only moving part is the clapper, which swings to allow flow. When the flow stops, the clapper returns to its closed position, forming an instant barrier to reverse flow.

 

Any pipeline requirement can be met with the valve ends. The valves have raised-face, ring-type joint flanges or weld ends. Raised-face and ring-type joint flanges meet the requirements of ASME B16.5 and B16.47, respectively.

 

Flanges are back faced to provide a smooth bolting surface for even bolt loading during pipeline installation. Unless otherwise agreed upon with the customer, weld-end valves comply with ASME B16.25. On request, hub ends and other specialty end connections are available.