Description The OPW 10P-0152 is a 10 Plus 1.5 inch double poppet emergency shear valve with female NPT Inlet/Outlet. Key Features 1-1/2" NPT thread connection. The patent-pending SmartGuard™ design contains shear groove leaks, preventing fuel from leaking into sumps to help reduce the risk of fire, explosion, personal injury, property damage, environmental contamination, product loss and costly clean-up. Superior shear groove design and engineering results in reliable valve shut-off in the event of a pull-over or dislodged dispenser - the 10 Plus utilizes the same time-tested field-proven design of the OPW 10 Series Emergency Shut-off Valve - the most specified emergency shut-off valve in the world. Fusible link releases to automatically close the valve to reduce fire hazard.