Fire Protection · F-NMBMQ

Backflow Preventer Detail

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The backflow preventer assembly connects incoming and outgoing water piping above the floor level. The inline system incorporates outside screw and yoke valves with supervisory switches, pressure gauges mounted in three-way valves typically, and a low water supply pressure switch with a test valve. Four test cocks are positioned along the dual check valve configuration for testing. Adjustable pipe saddle supports, such as Anvil Figure 264 or equal, elevate the assembly approximately three feet above the floor.

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