3139-18 Rego 1/4" M.NPT 18 Set PSIG Vapor Relief Valve

• Pop-action design keeps product loss to a minimum
• Suitable for use downstream of 1580 series regulators on vapor systems to comply with NFPA 58
• Full relief valve capacity when installed in a tee downstream from the regulator outlet
• Constructed of non-corosive brass

Specification Sheet

Designed for use as a relief valve on first stage regulators that comply with the NFPA 58 5.8.1.9 High-pressure regulators with a rated capacity of more than 500,000 BTU/hr where permitted to be used in two-stage systems shall incorporate an integral pressure relief valve or shall have a separate relief valve.