Ball And Relief Valve Body Material Bronze Inlet Type NPT Outlet Type FPT Inlet Size 3/4 in Outlet Size 3/4 in Factory Set Pressure 125 psi Pressure Range Not Applicable Disc Material Viton Overall Height 4 72441/100000 in Application Water Heaters Seat Material PTFE Spring Material Stainless Steel Temp Range -40 Degrees to 180 Degrees F Test Lever No Compliance CSA IAPMO NSF/ANSI 61/8 Standards CSA IAPMO NSF/ANSI 61/8