Backflow Preventer ¾” Brass Dual Check Valve

Catastrophic Storm - 25% OFF WE ARE OPEN, Even During the Storm   Don’t let severe weather catch you off guard! Even during the storm, we’re open and ready to help you stay prepared. Our Emergency Preparedness Kit has everything you need to keep your family safe and comfortable during unexpected weather events. Act now and get 25% off—stock is limited, so secure your kit today!   Backflow Preventer 3/4" is a required component of the Outdoor Boiler Fill Kit.  Connections are FNPT. Codes require a backflow preventer when connecting an outdoor boiler (or any external water tank) to your domestic water supply to prevent contaminants from entering (or "Backflowing") your domestic water supply. This prevents non-potable water and possibly harmful chemicals from coming out your shower head or into your pot of pasta!