Morrison Bros 346DI-0600 AV 3" External Emergency Valve

External emergency valves shut-off flow at the outlet of an aboveground storage tank (AST) or in a liquid transfer line where product flow must be stopped in the event of a fire. Fusible link holds spring actuated poppet in the open position. WARNING: The valves shown on this page require periodic inspection to ensure the shut-off mechanism is operating correctly. They are not intended to be used as a block valve and should not be opened under pressure. Standard Features Fully open design provides full flow when the valve is in the open position Cold, non-shock pressure rated at 200 PSI W.O.G. Flanged model conforms to ANSI B16.42 specification for class 150# raised face flanges 165° UL Listed fusible link standard (212° available) Construction Details Body, cap, and poppet: Ductile iron Cap gasket: PTFE Stem seal: PTFE encapsulated fluorocarbon elastomers