Fire Protection · F-SE8YC

Double Check Backflow Preventer

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A double check backflow preventer assembly connects the underground water supply piping to the fire supply system above the finished floor. The configuration incorporates supervised control valves on both sides of the backflow prevention device, supported by vertical pipe stands. Underground water supply piping transitions upward through a flanged elbow to meet the Division 21 fire protection scope. The installation complies with NFPA 24 requirements for water service piping, flushing, and material test certificates.

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