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    5 Products

    Easy-Maintenance Threaded Two-Stage Backflow-Prevention Valves for Drinking Water

    Image of Product. Front orientation. Backflow-Prevention Valves. Easy-Maintenance Threaded Two-Stage Backflow-Prevention Valves for Drinking Water, Dual Check.

    Dual Check

    Integral shutoff valves isolate flow for inline maintenance, and a top-entry cover provides easy access to internal components. These valves meet NSF/ANSI 61 for use with drinking water. For maximum protection from system contamination, they consist of a primary check valve and a secondary check valve. If the first check fails to close when flow stops or reverses, the secondary check valve engages to prevent backflow. A strainer prevents debris from blocking the check valves.
    Pipe
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    Max. Pressure
    @ Temp.
    Min. Opening
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    Bronze Body—Dual Check
     
    NPT Female Inlet × NPT Female Outlet
    1/2
    		175 psi @ 180° F3035 to 18012 3/4"StrainerASSE 1015NSF/ANSI 61
    		CSA Certified, USC Foundation Approved
    		Drinking WaterBuna-N
    		4775K610000000
    3/4
    		175 psi @ 180° F3035 to 18014 5/16"StrainerASSE 1015NSF/ANSI 61
    		CSA Certified, USC Foundation Approved
    		Drinking WaterBuna-N
    		4775K62000000
    1
    		175 psi @ 180° F3035 to 18017"StrainerASSE 1015NSF/ANSI 61
    		CSA Certified, USC Foundation Approved
    		Drinking WaterBuna-N
    		4775K63000000
    1 1/2
    		175 psi @ 180° F3035 to 18021 5/8"StrainerASSE 1015NSF/ANSI 61
    		CSA Certified, USC Foundation Approved
    		Drinking WaterBuna-N
    		4775K6400000000
    2
    		175 psi @ 180° F3035 to 18024 13/16"StrainerASSE 1015NSF/ANSI 61
    		CSA Certified, USC Foundation Approved
    		Drinking WaterBuna-N
    		4775K6500000000
     
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