Choosing between different knife gate valve series can be confusing when the applications appear similar.
CMO Africa’s product range includes several valve series, each designed around different operating requirements.
Two examples are the A Series and AB Series.
A Series
The CMO A Series is a unidirectional wafer knife gate valve designed for general industrial applications, water, wastewater and lighter slurry duties.
The published product information specifies sizes from DN50 to DN1200, with pressure depending on size and configuration.
AB Series
The AB Series is a bidirectional knife gate valve intended for wastewater, light slurry and general industrial services.
The Main Difference
The key consideration is the flow and sealing requirement.
If the system requires unidirectional isolation, an A Series configuration may be appropriate.
If pressure may occur from either direction, a bidirectional design such as the AB Series may be more suitable.
But That’s Not the Only Consideration
Engineers should also evaluate:
- Media
- Solids concentration
- Pressure
- Temperature
- Pipeline size
- Actuation
- Installation configuration
What About Heavy Slurry?
For extremely abrasive, high-solids mining applications, CMO Africa offers other series such as the GD and XB designs.
Conclusion
Valve series should be selected according to application rather than simply choosing the cheapest or most familiar model.
If you’re unsure which CMO valve series is appropriate, provide the media, pipe diameter and pressure conditions and the technical team can help identify the correct configuration.