GMK Knife Gate Valve

In systems with a high concentration of suspended particles, knife gate valves are ideally suited for on/off and isolation duties. Slurry, along with viscous, corrosive, and abrasive media, are all well-suited for use with knife gate valves. When fully open, the pressure loss across the valves is minimal, and the valves themselves are lightweight, simple to operate, and inexpensive. Knife gate valves can withstand extreme conditions and are equipped with a sharp blade to easily pass-through thick liquids. They excel in situations where corrosion is a concern, such as those involving wastewater. Therefore, it is preferable to have a knife made of acid-proof stainless steel in addition to a valve design optimized for slurry medium, as this makes it less vulnerable to problems caused by corrosion and, as a result, it requires less regular maintenance or even replacement. Unless specifically built for such a purpose, knife gate valves should only be used in the fully open or fully closed positions, never to modulate flow. Vibrations caused by fluid pressure against a partially closed gate wear away at the disc and seat over time. The water hammer can be mitigated thanks to the knife gate valves’ slow opening and closing mechanisms.

  • Size:2″-48″
  • Pressure:150LB, 300LB
  • Material:WCB, LCB, LCC, WC6, WC9, C5, C12, C12A, CF8, CF8M, CF3, CF3M, CN7M, Alloy 20, B148,UB6, Hastelloy C etc
  • Connection:Flanges, RTJ flange, wafer, lugged
  • Operation:Handwheel, wormgear, gearbox, pneumatic actuator

CE Certification

ISO Standards

Warranty Included



Here are a few of the many benefits of the GMK Knife Gate Valve.

  • Easy sleeve replacement is a major convenience.
  • possesses a two-way traffic pattern.
  • When fully open, the slurry knife gate is often removed from the process.
  • There is a bubble-tight shutdown, so there is no leaking in the downstream direction.
  • The hood is not obstructed in any way, allowing air to freely pass through.
  • We can now enjoy lower maintenance costs.
  • This item is equally at home in either a damp or dry environment.
  • Lighter weight means less effort is required to move about.


  • Full port, OS&Y outside screw and yoke, bolted bonnet
  • Two-way zero leakage shut-off from full vacuum to the rated pressure of 150 psi
  • True bidirectional flow and shut-off, can be installed in either direction
  • Larger flow area, minimum pressure drop.
  • Pressure against the gate is not required to achieve a seal.
  • Unsurpassed low-pressure knife gate valve seal
  • Mechanically retained seat prevents pullout
  • Knife gate valve seat is field replaceable
  • Cast Super yoke features: top removal stem nut, standard open and closed lockout positions
  • Heavy cross section I-beam le
Size 2″-48″
Pressure 150LB, 300LB
Material WCB, LCB, LCC, WC6, WC9, C5, C12, C12A, CF8, CF8M, CF3, CF3M, CN7M, Alloy 20, B148,UB6, Hastelloy C etc
Connection Flanges, RTJ flange, wafer, lugged
Operation Handwheel, wormgear, gearbox, pneumatic actuator
Supply ability 10000 piece/pieces per month
Port Wenzhou/shanghai
Payment terms L/C, D/A, D/P, T/T
Delivery time 7-10 Working day
  • Design and manufacture: MSS-SP-81
  • Face to face(end to end): MSS-SP-81
  • End connection: 2″-24″ ASME B16.5; 26″ -48″ ASME B16.47
  • Test and inspection: API598
Can we order goods from you directly?
Yes, we look forward to receiving your order. However, please note our minimum purchase quantity. If you require smaller quantities we will be happy to arrange an individual delivery. We would be delighted to assist you.
Can I get a discount?
This depends on the specific situation, you can call directly to consult.