Watts Reduced Pressure Zone Backflow Preventer, Cast Iron, Watts 909 Series, Flanged Connection - 4 DLF909-OSY Nominal Size-16" X 31" X 1.5" and chemical-based fluids

and chemical-based fluids

Cross Reference: Century 633

Temperature range: 40F to 212F (40C to 100C)

Designed to prevent contamination of potable water due to backflow

UL & ULC Listed

Watts Reduced Pressure Zone Backflow Preventer, Cast Iron, Watts 909 Series, Flanged Connection - 4 DLF909-OSY Nominal Size-16" X 31" X 1.5" and chemical-based fluidsReduced Pressure Zone Backflow Preventer; Series: Watts 909; Size: 4 in; Connection: Flanged; Body Material: Cast Iron; Temp. Range: 33 Degrees to 110 Degrees F; Max. Temp.: 110 Degrees F; Max. Pressure: 175 psi; Width: 27 in; Length: 58 in; Standards: ASSE 1013, AWWA C 511 92, CSA B64. 4