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The "Pop-Action" design permits the Rego® Pressure Relief Valve to open slightly to relieve moderately excessive pressure in the container. When pressure increases beyond a predetermined point, the valve is designed to "pop" open to its full discharge capacity, reducing excess pressure quickly. This is a distinct advantage over ordinary valves which open gradually over their entire range, allowing excessive pressure to develop before the relief valve is fully open. All RegO internal, semi-internal, and external relief valves incorporate this "Pop-Action" design.

Designed specifically for use as a primary relief valve on ASME cargo tanks for transportation and bobtails with 2" and 3" F.NPT couplings.

Unit of Measure

Specifications

Start To Discharge Setting

 N/A 250 psig

Approximate Overall Height (B)

 N/A 9 1/16 in

Approximate Height Above Coupling (C)

 N/A 1/2 in

Underwriters Laboratories (UL®) (At 120 Percent of Set Pressure)

 N/A 3700

ASME (At 120 Percent of Set Pressure)

 N/A 3456

Liquefied Petroleum (LP)-Gas

 N/A true

NH3

 N/A true

Propylene

 N/A false

Protective Cap (Included)

 N/A A8434-11B

Rating

 N/A American Society of Mechanical Engineers (ASME) Underwriters Laboratories (UL®) Listed

Size

 N/A 2 in

Material

 N/A Steel

Connection

Container Connection (A) Size

 N/A 2 in

Container Connection Type (A)

 N/A Male National Pipe Thread (MNPT)

Note

Note

 N/A

Relief Valves in this catalog are only intended for use in LP-Gas or anhydrous ammonia service. Do not use any other service commodity. If you have an application other than conventional LP-Gas or anhydrous ammonia service, contact RegO before proceeding.

Per NFPA Pamphlet #58, Appendix D. Area shown is for UL or ASME flow rating-whichever is larger.