This control valve associated with flush valves in plumbing systems serves as a check valve which under certain conditions prevents the flush valve from operating unintentionally and causing flooding. Water Pump Control ValvesThe control valve has a loose valve plug which is spring pressed towards its seat and is arranged to shut off the water flow as well as throttle the flow through the flush valve. The control valve therefore serves three purposes; as a shutoff valve,BALANCING VALVES as a check valve to prevent back flow, and as a throttle valve, all in a single unit. 

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2011-11-28

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