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Similar to the CMO GL model, the CMO GA Slurry Knife Gate Valve is built with a monobloc cast iron body but with a long pattern. The symmetric body design ensures unobstructed flow and a water-tight seal required for complete fluid isolation. The valve doesn’t produce cavities when it’s open, which eliminates turbulence in the fluid flow. The full port allows high flow rates with low pressure drop.

A full flanged design makes this the ideal valve for areas that need regular maintenance or assembly of other parts such as pipe sections, hoses, and pumps.

This valve has a through-conduit gate designed to fully isolate the flowing media. The sleeves seal against each other permanently through a compression ring when the valve is open. This makes the valve suitable for end-of-line service in pressurised systems. The sharp but rounded edge creates a small gap between the sleeves when the valve strokes to close, pushing out any media. Not using a traditional seat cavity protects the valve from particle build-up that could cause jamming.

The resilient seat protects the valve body from touching abrasive media. The sleeves are available in different materials such as natural rubber, synthetic rubber, and polyurethane.

Technical specifications




GA series

Size range

DN50–1500 (2–60”)
Contact us for bigger sizes

Pressure class

10 bar (DN50–600)
4 bar (DN700–900)
2 bar (DN1000–1500)

End connections


Actuator options

Gear operated

Material specifications


Standard: GJS-500 cast iron and CF8M stainless steel
On request: A216WCB carbon steel and stainless steel alloys (AISI 316 Ti, 2507 Duplex, 254 SMO, Uranus B6, Ni-Resist, Ductile Ni-Resist)


Standard: AISI 304 and 316 stainless steel
On request: Duplex SAF 2205 and 2507, stainless Steel 17-4PH, and other materials, coatings, and finishes

Seat and max temperature

Natural rubber, EPDM, nitrile, polyurethane (90°C)
Viton (210°C)

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2. Choose the right solution

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3. Get the job done

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