2-1/2" Reduced Pressure Backflow Preventer Valve with OSY Valve

3" Reduced Pressure Backflow Preventer Valve Grooved Z Pattern

6" Double Check Detector Valve by Ames Backflows Grooved Butterfly

6" Ames Double Check Backflow Preventer Valve for Water Systems

2-1/2" Backflow Preventor Valve Double Check Detector N Pat Grooved Butterfly Valve Fire Protection

3" Double Check Detector Backflow Preventor Valve Grooved Assembly by N Pat

4" Double Check Assembly with OSY Valve by Ames

2-1/2" Double Check Assembly Backflow Preventor Valve GXG OSY Valve Fire Protection

4" Double Check Detector and Pat Grooved Butterfly Valve

2-1/2" Double Check Assembly With OSY Valve For Fire Protection

3" Double Check Assembly Backflow Preventor Valve Ductile Iron