Valve-Back Check 3 Fpt X 3 Mpt Steel

These back check flow valves lead the industry with up to 20% More Flow than the nearest competitor. Back check valves provide flow protection to container openings or liquid lines where flow is intended for one direction. The valve is normally closed until pressure activates the valve when flow is directed into piping or containers causing the back check to open. When flow stops or reverses, the check returns to the closed position. These valves come with dual seating capabilities or an optional bonded soft seat on 2 and 3” models. With the dual seating capabilities, the factory installed O-ring provides a leak-free, soft seat seal which enables repair and maintenance to be done on depressurized plumbing. Remove the O-ring to allow metal-to-metal seating with a minimal leak seal to restrict flow in case of a break in the line. Note: Leaving the O-ring soft seat installed on the valve will require a minimum of 15 psig pressure differenƟal between the transfer line and container to unseat the valve and allow it to fully open. FEATURES: Up to 20% More Flow than nearest competitor Maximum flow achieved by full port and increased stem travel design Integral breakaway feature leaves valve assembly intact with internal hex broach for easy removal All stainless steel internal components Dual purpose seat reduces inventory from 2 to 1