Used in commercial grooved end piping systems 2 in through 12 in. The uniqueness of the series 7700 Gruvlok® butterfly valve begins with the spherical bore of the disc seat area. This facilitates a constant disc to seat loading that maintains a leak tight stem seal regardless of disc position. The stem sealing force is constant through the full disc cycle and operating torques are kept low which increases valve life. The design provides a bubble tight seal from full vacuum to 300 psi when the valve is closed. The valve is rated for dead-end service to a full pressure rating of 300 psi. Silicone free series 7700 available upon special request. The stem to disc connection provides zero backlash. The high strength, corrosion resistant, stainless steel stems are blow out proof. Each stem is fitted with a secondary seal that also provides a lifetime lubrication chamber.
Gruvlok® Butterfly Valve, Series: AN7722-3, 8 in Nominal, Grooved End Style, -40 to 230 deg F, Media: Cold Water, Gear Operated Actuator, 5-1/4 in Inlet to Outlet Length, 14-15/16 in Top to Inlet Center, Ductile Iron Body, Ductile Iron Disc, 416 Stainless Steel Stem & Pin, Nylon Coated, 8-5/8 in OD Dimensions