Designed for use as a relief valve on first stage regulators that comply with NFPA 58 2.5.7.5 exception: “first stage regulators with a rated capacity of more that 500,000 BTU/hr. shall be permitted to have a separate relief valve.
Designed for use as a relief valve on first stage regulators that comply with NFPA 58 2.5.7.5 exception: “first stage regulators with a rated capacity of more that 500,000 BTU/hr. shall be permitted to have a separate relief valve.