Relief Valve and Tee Valve Body Material Brass Compatible Manufacturer Part Number MR40245 C MR85245 Inlet Connection Size 3/4 in Inlet Connection Type NPT Maximum Operating Pressure 150 psi Maximum Operating Temperature 210 Degrees F Outlet Connection Size 3/4 in Outlet Connection Type NPT Overall Height 2.75 in Overall Length 3 in Overall Width 3.05 in Compatible Grainger Part Number 38UN55 6E025 For Potable Water Use Yes For Use With Rheem Tank Water Heaters