Slide Gates and Knife Gate Valves - CMT Inc.

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Slide & Knife Gates

Slide Gates and Knife Gate Valves for Dry Bulk Powder Processing

Our customers often requests “knife gates” when  what they are really looking for is a “slide gate” for dry bulk  material handling. These two types of gates are often confused with one another, but a knife  gate and a slide gate are NOT the same.  A  knife gate valve is a component that uses a blade to cut through very thick liquids or hard clumps of clogged material. A slide gate valve is a component  that utilizes a stainless steel, rectangular slide plate to shut off or open the flow of dry material. The slide plate actuates between two, compression-loaded, hard polymer plates. Knife Gates and Slide Gates are used in a wide variety of industries, including Food, Plastics & Petrochemical, Animal Feed, Energy, Mining & Minerals, and Chemical Industries.

Pneumatic & Manual Knife Gate Valves

The Pneumatic Knife Gate Valve is a heavy duty unit with cast body,  knife gate, stuffing box with packing and oversized air cylinder or  manual hand crank. These heavy duty units have an ASA 150 lbs bolt hole pattern.
Options include resilient seat for sealing against pressure or vacuum; solenoid valves and proximity sensors.
Sizes available: 2, 3, 4, 6, 8, 10, 12, 14, 16, 18, 20 and 24 inch.
Knife Gate Valve


Cast Stainless Steel.
Stainless Steel.
Metal, EPDM, Nitrile, Viton, Teflon or Silicone.
Air Cylinder or Manual Hand Crank.
Oversized air cylinder complete with a five-port four-way single coil solenoid valve.
Available to indicate open/closed conditions.
Round flanges with ASA bolt hole pattern.

Features & benefits

  • Heavy Duty Cast Construction
  • ASA Bolt Hole Pattern
  • Stainless Steel Construction
  • Thick beveled edge knife plate
  • Resilient rubber seats seal against pressure and vacuum
  • Pneumatic or manual actuation
  • Oversized air cylinder for pneumatic units

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220 Crompton St
Charlotte, NC 28273
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