The Series 716H/716 check valves are a product of computer-assisted innovative engineering with quality features including a new hydro dynamically efficient profile. The Vic-Check® valve utilizes a spring-assisted, single-disc design that achieves a leak-free seal with as little as 5 ft/1.5 m of head pressure. The valve can be installed in both horizontal and vertical positions. Series 716H/716 check valves are engineered for long life and seize-free sealing. For the Series 716H, in 2 to 3 in/50 to 80 mm sizes, the stainless steel disc seats against the O-ring seal which is mounted on the electro less nickel plated end face. The Series 716, in 4 to 12 in/100 to 300 mm sizes, feature an elastomer encapsulated disc and a electro less nickel plated seat. 2 to 3 in/50 to 80 mm size check valves are rated to 365 psi/2500 kPa and 4 to 12 in/100 to 300 mm sizes check valves are rated to 300 psi/2065 kPa. All sizes are factory tested to the rated working pressure. Drains can be optionally provided both upstream and downstream of the disc. Grooved ends allow fast, easy installation with just two Victaulic couplings. The valve may also be connected to flanged (ANSI Class 150) components using Style 741 Vic-Flange adapters on either end.