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The double check detector assembly consists of two independently operating, spring loaded check valves, OSY resilient wedge gate valves, and bypass assembly. The bypass assembly consists of a meter, a double check including shutoff valves and required test cocks. Each cam-check can be internally loaded and provide a positive drip tight closure against reverse flow. Cam-check includes a stainless steel cam arm and spring, rubber faced disc and a replaceable seat. The body of this assembly made of stainless steel material.
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Double check valve is a backflow prevention instrument designed to protect water supplies from contamination. It has two check valves assembled in series usually with a ball valve or gate valve installed at each end for isolation and testing. Often, test cocks (very small ball valves) are in place to attach test equipment for evaluating whether the double check assembly is still functional. It is suitable for prevention of backpressure and backsiphonage. It is commonly used on lawn irrigation, fire sprinkler, and combi-boiler systems
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The double check valve assembly consists of two independently operated spring loaded cam-check valves, required test cocks, and optional inlet and outlet resilient wedge shut-off valves. Each cam check is internally loaded and provides a positive drip tight closure against the reverse flow of liquid caused by backsiphonage or backpressure. The modular cam-check includes a stainless steel spring and cam-arm, rubber faced disc and a replaceable seat.
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