Anti-Siphon Backflow Preventer, Series Watts 800, Size 3/4 in, Connection FIP, Body Material Lead Free Brass, Temp. Range 33 Degrees to 140 Degrees F, Max. Temp. 140 Degrees F, Max. Pressure 150 psi, Width 2 1/4 in, Height 6 1/2 in, Standards ANSI, USC Manual Section 10 Approved By The Foundation for Cross-Connection Control and Hydraulic Research At The University of South California