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The CMO D Knife Gate Valve has a monobloc die-cast body with a pressure-retaining screwed-down bonnet that allows it to support pressures up to 100 bar. The valve body has wedges that ensure seal-tightness and interior guides that support the gate as it slides.

The body’s conical internal shape and generous width provides enough clearance to allow the gate to remain open for extended periods without requiring a large torque to close it. And as it shuts, the gate pushes out any solids that may have accumulated.

This valve is designed for unidirectional flow with built-in internal guides that prevent the gate from bending due to counter-pressure. This also allows the valve to support up to 30% of the working pressure from the opposite direction. The valve can also be specified for bidirectional use.

The CMO D Knife Gate Valve is suitable for clean liquids or liquids containing solids in high pressure applications.

Technical specifications




D series

Size range

DN50–2000 (2–80”)
Contact us for bigger sizes

Pressure class

Specified to work conditions

End connections


Actuator options

Gear operated

Material specifications


Standard: A216WCB carbon steel and CF8M stainless steel
On request: GJS-500 nodular cast iron and stainless steel alloys (AISI 316 Ti, Duplex, 254 SMO, Uranus B6)


Standard: AISI 304 and 316 stainless steel
Contact us for other materials, coatings, and finishes

Seat and max temperature

EPDM, nitrile (90°C)
Silicone (200°C)
Viton (210°C)
PTFE (250°C)
Metal (>250°C)

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2. Choose the right solution

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3. Get the job done

Get the right valves for the job, fitted out, tested, and ready to install. We’ve got your back with ongoing repairs and maintenance.

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