Knife gate valve

with handwheelshut-offwafer

TIGHTER SEATS WITH PATENTED TORQUE CLOSURE OF KNIFE ● Beveled knife-stem connection locks the knife blade tight against the seat. The seat is sealed by positive torque closure – not media pressure – unlike any other knife gate valve. ● Raised-face seat: A groove around the seat collects particles pushed aside by the knife and prevents clogging. When the valve opens, media pressure cleans the groove. ● Lapped seat ensures tight closure. ● Crimped resilient seat ensures longer service life. ● Four seat designs: Integral, resilient and renewable Stellite 6. BYPASS TO PREVENT CLOGGING OF BONNET ● Bypass lets pulp circulate inside the bonnet when valve is opened, preventing clogging (patent # 2093539 CDN and # 5295661 U.S.) EASY OPERATION ● Lower running torque due to reduced friction: Friction between stem and packing in bolted bonnet knife gate valve is far less than the friction between the blade and the packing in a standard knife gate valve. ● Low-friction, acid-resistant Ni-Resist stem nut: Valves can operate with smaller actuators than standard knife gate valves.