Engineered Controls 1" NPT Pop-Action Pressure Relief Valve – ASME Rated, 250 PSIEnsure safety and compliance with this semi-internal "pop-action" pressure relief valve, designed for ASME containers including 250, 500, and 1,000 gallon propane or LP gas tanks. Commonly used in LP, propane, and natural gas bulk storage systems, this valve activates at 250 PSI, relieving pressure efficiently with a high max flow rate of 2565 SCFH.Features:1" Male NPT connection for standard compatibilityPop-action design minimizes product loss during dischargeEngineered for use in bulk storage and dispensing systemsBuilt with non-corrosive materials to withstand outdoor exposureUnderwriters Laboratories listed for ASME containers, where valves are mounted outside the hood or near the hood with a protective capIncludes 1-7/8" wrench hex section for easy installationASME rated for LP gas and other approved applicationsSpecifications:Height: 9-3/8"Flow Rate (Max): 2565 SCFHStart-to-Discharge Setting: 250 PSIContainer Connection: 1" M. NPTMFG#: 8684G | DLP#: 1LP2122Perfect for installers and technicians servicing commercial or industrial propane systems. Ships new in box.