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Designed for use as a supplementary relief valve on small ASME above ground and underground containers. They may also be used as a primary or secondary relief device on DOT cylinders, or as hydrostatic relief valves. All working components of these relief valves are outside the container connection, so the valves must be protected from physical damage.

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Applications
A Container Connection (In.) 1/2" M. NPT
Container Connection (in.) 1/2" M. NPT
Flow Capacity Scfm Air Rego Rated At 480 (PSIG) 780 scfm
Start To Discharge Setting (PSIG) 375 PSIG
Accessories-Pipeaway Adapter Or Threads 3129-10*
Accessories-Pipeaway Adapter Outlet Size 1/2" F. NPT
Accessories-Pipeaway Adapter Part Number 3129-10
Accessories Protective Cap 3129-40P
B Overall Height Approx 2 19/32”
Brand RegO
Connection Type M. NPT
Container Type DOT
Features Benefits Relief valve designed to automatically reseat firmly after discharge. |Resilient seat disc provides a “bubble-tight” seal. |Available in both brass and stainless steel. |Available in configurations that permit direct attachment of vent piping when required.
Flow Capacity Scfm Air Ul At 120 Of Set Pressure -
Height Approx 2 19/32”
Materials Body, Brass |Spring, Stainless Steel |Seat Disc, Resilient Rubber
Suitable For Tanks W Surface Area Up To 200 lbs./Propane
Valve Body Material Brass
Wrench Hex Section 1 1/8”