Water Hammer Arrestor Hose Adapter Body Material Stainless Steel with Brass Adapter Connection Type GHT x GHT X NPT Pipe Size 3/4 in x 3/4 in x 1/2 in Factory Set Pressure 25 to 35 psi Overall Height 4 5/16 in Diameter 1 1/4 in Max Pressure 150 psi Temp Range 33 Degrees to 180 Degrees F