Clarkson™ Knife Gate Valves

Model KGF/KGF­HP Knife Gate Valve
The Clarkson KGF and KGF-HP slurry knife gate valves provide proven slurry valve technology in higher pressures. 100% isolation bubble-tight shut-off results in absolute zero downstream leakage. Double-seated design provides bi-directional flow and shutoff. Field replaceable elastomer sleeves. Dynamic, self-adjusting secondary seal. No seat cavity where solids can collect and prevent full gate closure.

Model KGD Wafer Style Slurry Valve
The Clarkson KGD wafer style slurry knife gate valve offers the latest in elastomer technology with the Mark III sleeve design. 100% isolation, bubble-tight shut-off results in absolutely zero downstream leakage. Double-seated design provides bi-directional flow and shut-off. Unobstructed flow eliminates turbulence, minimizes pressure drop across valve. No seat cavity where solids can collect and prevent full gate closure. Dynamic self-adjusting secondary seal. No gate or stem packing is required, eliminating packing leakage and maintenance. No metal parts in contact with the flowing slurry.

Model KGA Plus Knife Gate Valve
The new Clarkson KGA+ heavy duty slurry valve builds on the 35 years of in-service experience with the KGA and provides new features including an improved secondary seal and full face flanges. Improved secondary seal is capable of being lubricated without disassembly, simplifying valve maintenance. Can be used in wet or dry services easily dealing with large, heavy particles and tramp material. 100% isolation; bubble tight shut-off results in absolutely zero downstream leakage.

Model KLB Knife Gate Valve
KLB wafer style linear line blind offers value, high performance and safety in a compact package. Linear line blind simplifies a difficult, time-consuming process. No need to spread the pipe to blank the line, actuation can be automated. Visual confirmation of the blank from all sides. Standard with closed position dual-function lock-out assembly. Detachable pin removes potential energy from actuator. Lock-out pin prevents unwanted blind movement. 100% isolation-bubble tight shut-off results in absolutely zero downstream leakage, a true man-safe line blind. Patented, field replaceable elastomer sleeves available in a wide range of elastomers to meet varied applications. No seat cavity where solids can collect and prevent full blank closure.

Model M145 / M202 / M345 / M345­HP Knife Gate Valve
Clarkson L&M valves with the three-piece replaceable polymer liner offer reliability and long life in a wide variety of tough applications. Proven design features a three-piece replaceable polymer liner. Available with ASME Class V shut-off in select applications. Every valve is tested for shut-off in both directions. Can be installed without worry as to direction of flow. 100% full port opening reduces pressure drop allowing greater flow and minimizing wear. T-Lock insert is firmly retained by the body liner, helping ensure maximum performance. Liner provides all-around gate support and helps prevent lateral movement of the gate, giving you longer packing life and a more consistent valve seal. Positive seal packing chamber.

Figure SU10R Polyurethane Knife Gate Valve
The SU10R valve offers bi-directional isolation with a field replaceable snap-in liner that completely protects the wetted area from abrasion and corrosive slurries, increasing reliability and service life. Unique one-piece, precision molded high strength polyurethane liner protects the wetted parts, from corrosion and abrasion. It is field replaceable in all sizes, no need to return to factory for repair.

Keystone™ Knife Gate Valves

Figure F17 and F20 Knife Gate Valves
Keystone standard and custom fabricated knife gates available in any weldable alloy and in many configurations. Fabrication provides flexibility of design for today’s process industries.
Valves are designed and built to your exact specifications. Round, square or rectangular ported. Uni-directional or bi-directional.

Material Options: Hastelloy, 304 Stainless Steel, 316 Stainless Steel, Stainless Steel, Super Duplex

Figure PCS17 Perimeter Seal
Bi-directional zero leakage knife gate valve. The new standard for innovation and performance with its drop-in new generation perimeter seat, that ensures zero leakage in either direction. Re-engineered seat geometry and a new precision molding process ensure zero water leakage at low or high pressures. Seat material is available a variety of materials including EPDM, Viton (FKM), Nitrile (NBR). The seat is in-line replaceable. Solid cast, one piece body in 316 stainless steel or WCB cast carbon steel. Four post yoke design makes it easier to make packing adjustments and is more efficient for seat repair/replacement. Also makes actuator retro-fitting quick and easy.

Figure F215 Slide Gate Valve
Ideal valve for dense slurry and solids applications and wet or dry abrasives. Slide through gate design cuts through solids providing consistent operation in the most difficult applications. O-port style gate fully protects the seat face in open position, giving you longer service life. Will close through a static column of material.