Knife Gate Valves

Reliable, high quality knife gate valves at competitive prices. Our valves are designed for top performance and a long, maintenance-free lifetime.

We have a variety of product lines including:
Metal and resilient seated knife gate valves. Split ductile body knife gate valves. Slide gate valves. Bonneted knife gate valves. Fabricated and custom designed knife gate valves. Solid one piece cast body in corrosion resistant stainless steel.

Standard features include:
All cast stainless steel construction. Compact wafer configuration to Tappi and MSS standard face to face. Non-clogging, full-port design. Designed to handle dense mixtures of stock and slurries. Available in sizes from 2" to 72" diameter. 150 PSI working pressure. Flanges match ANSI B16.5 - 150 lb standard with all holes tapped. Custom designed knife gate valve to your specifications.

Design Specifications for Knife Gate Valves


Metal Seat Knife Gate Valves

Figure 76 Knife Gate Valves

Figure 76, Cast SS,
Metal to Metal Seat, Knife Gate Valve

Solid one piece cast body in corrosion resistant stainless steel. Compact wafer configuration to Tappi standard face to face. Designed to handle dense mixtures of stock and slurries. The shearing action of the knife gate cuts through solids and cleans the seat as it closes. Smooth flow--non-clogging FULL PORT design. Gate and seat are machined and fitted to provide shut off in one direction. Bonnetless, outside screw and yoke, non-rising handwheel, rising stem...

For more information, view the Figure 76, Knife Gate Valve page.
Figure L 76 Knife Gate Valves

Figure L 76, Ductile Iron Body, SS Liner,
Metal to Metal Seat, Knife Gate Valve

Available in metal seat (Fig 76) and resilient seat (Fig 77). HEAVY DUTY cast ductile iron body, packing gland and yoke. Heavy duty Lug body design to resist deflection from line loads and internal pressure. ANSI B16.5-150 drilled & tapped lugs. Fabricated STAINLESS STEEL LINER. STAINLESS STEEL GATE for corrosion resistance and durability. Fig 76 with METAL TO METAL SEAT and unidirectional beveled gate which provides shut off as required by MSS-SP-81...

For more information, view the L Series Knife Gate Valve page.
Figure 92 Slide Gate Valves

Figure 92, Fabricated,
Metal to Metal, Slide Gate Valve

Fabricated stainless steel body ideally suited for dense or abrasive media, both wet and dry. Stainless steel gate, seat and raised faces. Heavy duty designed body to resist deflection from line loads and internal pressure. Gate designed to withstand full 150 PSI rated pressure as required by MSS SP-81. Body cavity, seat configuration and beveled gate designed to provide shut-off capability in thick media such as pulp stock slurries, or with solid media...

For more information, view the Figure 92, Slide Gate Valve page.
Figure 176 Bonneted Knife Gate Valves

Figure 176, Bonneted,
Knife Gate Valve

Bonneted Knife Gate Valves are ideally suited to aid in reduction of Fugitive Emissions. Cast stainless steel body, gland and yoke. Fabricated bonnet which can be designed to the full pressure rating of the valve. Wiper between body and bonnet to prevent solids from entering bonnet. Maintenance free Viton stem seal with packing- less O-ring seal gland design. Heavy duty designed body to resist deflection from line loads and internal pressure...

For more information, view the Figure 176, Knife Gate Valve page.


Resilient Seat Knife Gate Valves

Figure 60 Resilient Seat Knife Gate Valve

Figure 60, Split Body
Resilient Seat Knife Gate Valve

HEAVY DUTY cast ductile iron split body and yoke for the most rugged service. Replaceable natural rubber seat provides a BI-DIRECTIONAL BUBBLE TIGHT SEAL across gate from 0 to 150 PSI. Optional EPDM and Buna seats also available. Resilient seat is flush with the bottom of the port ELIMINATING any pockets in the bottom of the valve to collect material in media such as slurries, pellets or powders. Resilient seat has a molded-in steel reinforcement...

For more information, view the Figure 60, Split Body, Knife Gate Valve page.
Figure 63 Polymer Lined Resilient Seat Knife Gate Valve

Figure 63, Polymer Lined
Resilient Seat Knife Gate Valve

Heavy Duty fabricated carbon steel or stainless steel body, yoke and packing gland. UHMWPE, PTFE, or Polypropyoene liner and seat provide bi-directional tight shutoff. Three-piece field replaceable liner/seat. Available in standard pressure ratings of 150 psi or 300 psi.Higher pressure ratings and custom designs also available. ANSI B16.5 Class 150 or 300 flange bolting. Stainless steel gate and stem for corrosion resistance and durability...

For more information, view the Figure 63, Polymer Lined, Knife Gate Valve page.
Figure 65 Urethane Lined Resilient Seat Knife Gate Valve

Figure 65, Urethane Lined
Resilient Seat Knife Gate Valve

HEAVY DUTY cast ductile iron body and yoke for the most rugged service. Solid lug body design. Positive SHUT OFF in BOTH DIRECTIONS. URETHANE LINER and seat provides a BI-DIRECTIONAL BUBBLE TIGHT SEAL across gate from 0 to 150 PSI. Smooth flow--non-clogging FULL PORT design. SEAT IS FLUSH with the bottom of the port ELIMINATING any pockets in the bottom of the valve to collect material in media such as slurries, pellets or powders...

For more information, view the Figure 65, Urethane Lined, Knife Gate Valve page.
Figure 77 Cast Stainless Steel Resilient Seat Knife Gate Valve

Figure 77, Cast Stainless Steel
Resilient Seat Knife Gate Valve

Solid one piece cast body in corrosion resistant stainless steel. Compact wafer configuration to Tappi and MSS standard face to face. Replaceable resilient seat. DRIP TIGHT SHUT OFF. Designed to handle dense mixtures of stock and slurries. Variety of resilient seat material available. Smooth flow--non-clogging FULL PORT design. Positive SHUT OFF in BOTH DIRECTIONS. Bonnetless, outside screw and yoke, non-rising handwheel, rising stem...

For more information, view the Figure 77, Cast Stainless Steel, Knife Gate Valve page.
Figure L 77 DI Body SS Liner Resilient Seat Knife Gate Valve

Figure L 77, DI Body, SS Liner Resilient Seat Knife Gate Valve

Available in metal seat (Fig 76) and resilient seat (Fig 77). HEAVY DUTY cast ductile iron body, packing gland and yoke. Heavy duty Lug body design to resist deflection from line loads and internal pressure. ANSI B16.5-150 drilled & tapped lugs. Fabricated STAINLESS STEEL LINER. STAINLESS STEEL GATE for corrosion resistance and durability. Fig 76 with METAL TO METAL SEAT and unidirectional beveled gate which provides shut off as required by MSS-SP-81...

For more information, view the Figure L 77, DI Body, SS Liner, Knife Gate Valve page.


Large Fabricated Gate Valves

Figure 76 & Figure 77 Large Fabricated Gate Valves

Figure 76 & Figure 77
Large Fabricated Gate Valves

Available in metal seat (Fig 76) and resilient seat (Fig 77). Fabricated carbon steel body flanges, packing gland and yoke. All STAINLESS STEEL construction available. Fabricated STAINLESS STEEL LINER. STAINLESS STEEL GATE for corrosion resistance and durability. FIG 77 with resilient seat is bi-directional with positive SHUT OFF in BOTH DIRECTIONS. Fig 77 available seat materials include Buna, EPDM, Neoprene, Viton and Silicon...

For more information, view the Large Fabricated Gate Valves page.


Custom Knife Gate Valves

Custom Knife Gate Valves

Metal Seats, Bonneted or Bonnetless
Custom Knife Gate Valves

We can have virtually any configuration of fabricated knife gate valve or slide gate valve designed and manufactured. We offer resilient seats, metal to metal seats, bonneted, or bonnetless knife gate valves in sizes through and above 96. These valves are available in 50, 125, and 150 PSI CWP pressure ratings. Other pressure ratings are available on request...

For more information, view the Custom Knife Gate Valves page.


Valve Operators

Operators

Valve Operators

All knife gate valves are provided with handwheels as standard. Valves can be furnished with handwheel extensions and floor stands. Upon request, we have a variety of different valve operator types, including Handwheel Operators, Lever Operators, Cylinder Operators, Bevel Gear Operators, Electric Motor Operators, and Chain Wheel Operators...

For more information, view the Valve Operators page.