Vacuum Relief Valve Body Material Bronze Inlet Type MNPT Outlet Type FNPT Inlet Size 3/4 in Outlet Size 3/4 in Pressure Range 0 to 200 psi Disc Material Silicone Overall Height 1 3/4 in Application Vacuum Breaker Overall Length 2 1/2 in Seat Material Silicone Spring Material Stainless Steel Temp Range 0 Degrees to 212 Degrees F Test Lever No Compliance ASSE CSA IAPMO Standards ASSE 1001 CSA B64.1.1