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During closure, the stem slides down pushing the knife into contact with thetwo bottom lugs. The taperstem head then transfers a vertical closing force to a lateral force which positively seats the knife against the seat face. Stem force, not line pressure, maintains seating contact in this unique design, ensuring tight seating in both directions (see alternative seat designs on page 10). During the opening and closing cycle, the guides ensure proper alignment of the knife. â—� Handwheel torque oractuator force provides positive seat-knife closure.

Knife gate valves - 24371 THE VELAN BOLTED BONNET KNIFE GATE VALVE PROVIDES POSITIVE SEATING ON THE BOTTOM AND THE TOP OF THE BLADE

â—� Patented knife – stemconnection. Unlike any other design, the stem head slides inside a circular cavity on the stem guides in the body and bonnet, and is connected to the knife blade by a taper slot. A roller prevents the stem from rotating.

THE BONNET & BODYARE SPECIALLYDESIGNED TO PERMITPULP CIRCULATIONTHIS PREVENTSCLOGGING

VALVESEATROLLER BODY LUGS KNIFE 7