BACK FLOW PREVENTOR 3/4" F x MBack Flow Preventer Check Valve Protects water supply from harmful chemical backflow will not allow "spike" pressure to push chemicals into supply line. Now required by many city and state regulations. Max PSI: 125 Max Temperature: 180F Machined Brass Housing, Chrome Plated Finish Plastic Diaphragm Check 3 4" Female Garden Hose Inlet (with Lock Screw) 3 4" Male Garden Hose Outlet
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