EXTERNAL RELIEF VALVE 18 LBS. – FLOW @ 21.6 PSI INLET PRESSURE

Designed for use as a relief valve on first stage regulators that comply with the NFPA58 exception: “first stage regulators with a rated capacity of more than 500,000BTU/hr shall be permitted to have a separate relief valve.” Set pressure: 18 PSIG. Regulator settings: 10 PSIG.