Pressure Relief Valve Body Material Bronze Inlet Type NPT Outlet Type NPT Inlet Size 1/2 in Outlet Size 1/2 in Factory Set Pressure 175 psi Pressure Range 75 to 175 psi 15 000 BtuH Disc Material Silicone Overall Height 3 1/2 in Application Domestic Storage Tanks Tankless Water Heaters Spring Material Stainless Steel Temp Range 210 Degrees F Test Lever Yes Compliance ANSI Z21.22 BAA Compliant CSA Standards ANSI Z21.22 BAA Compliant CSA