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The CMO AB Knife Gate Valve is a general purpose valve with a monobloc body suitable for bidirectional service in low and medium-pressure applications.

The monobloc machine-cast body has built-in wedges that allow true bidirectional flow at the same working pressure.

This valve has a soft seat with a U-shaped rubber sealing joint covering the gate’s perimeter. An internal stainless steel wire maintains the shape of the sealing joint and keeps it in place. This design ensures a completely flat seal that prevents solid build-up and internal cavities.

The CMO AB Knife Gate Valve is suitable for liquids with a maximum solids concentration of 4%.

Technical specifications

Brand

CMO

Model

AB series

Size range

DN50–600 (2–24”)
Contact us for bigger sizes

Pressure class

10 bar (DN50–150)
8 bar (DN200)
6 bar (DN250–300)
5 bar (DN350–450)
3 bar (DN450–600)
Contact us for other pressure classes

End connections

Wafer

Actuator options

Handwheel
Gear operated
Pneumatic
Hydraulic
Electric

Material specifications

Body

Standard: GJS-250 cast iron and CF8M stainless steel
On request: GJS-500 nodular cast iron, A216WCB carbon steel, and stainless steel alloys (AISI 316 Ti, Duplex, 254 SMO, Uranus B6)

Gate

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)

How we help you choose the right valves:

1. Tell us what you need

Talk to our experts about your application, which valves and controls you need, and any repair or maintenance concerns.

2. Choose the right solution

We’ll do all the analysis, discuss the options with you, and make a recommendation – the valves we’d choose in your shoes.

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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