Nil-Cor - Model 300/310 and 310HD - Double-Offset Disc Butterfly Valves - Brochure

The Nil-Cor Series 300/310 double-offset disc design allows the disc to move off the seat with a `camming` action, reducing break-away torque and seat wear. The 360° uninterrupted disc seal eliminates the leak path at the shaft hubs found onPTFEand rubber-lined valves. A strong Stainless Steel shaft encapsulated with graphite or fiberglass-reinforced vinyl ester resin eliminates corrosion and assures long trouble-free operation.