Valves have a self-cleaning disc design with contoured inlet and improved disc seating (sealing) characteristics. Valves have a flooded disc hinge pin pocket for improved life cycle performance in contaminated fluids. Valves have a round body design with incorporated notches for flange bolt alignment and incorporated valve lifting eyelet with flow direction arrow. Features include engineered and molded with improved hinge and spring design, improved flow rates, an easy spring installation without any special tool requirements, new disc design with conical sealing surface for highest reliability and maximum operating cycles. The flooded flapper hinge pins avoid sediment build up and it has a cylindrically embedded flapper hinge pin for optimal stress absorption. It has an integrated installation lifting eyelet with FLOW ARROW with defined breaking point for easy removal after installation. Installation Precautions: No direct mounting onto a pump, bend or elbow. Install a minimum of five times the nominal pipe diameter away from pumps, bends or elbows. (Example: Install a 4" valve 20" away from a pump discharge.) Note: Do not use valves without springs for pulsating applications.
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