Introduction: When Standard Knife Gates Wear Out Too Fast

In harsh slurry service, standard metal-seated knife gate valves often don’t last. Abrasive particles, corrosive media and high temperatures quickly damage sealing surfaces, causing leaks, blockages and unplanned downtime.

That’s where ceramic knife gate valves supplied by KV Controls come in. Designed specifically for severe slurry service, these valves help plants improve reliability, extend maintenance intervals and protect critical pipelines carrying ash, sludge, coal slurry, pulp, sewage and other solid-laden media.

What Is a Ceramic Knife Gate Valve?

A ceramic knife gate valve is a specialised knife gate valve where the disc and seat sealing surfaces are manufactured from advanced ceramic materials instead of standard metals or soft seats.

This design makes the valve especially suitable for:

Corrosive media with high hardness particles (such as slag water)
Slurries with soft but abrasive particles in the pipeline
Thick, solid-laden flows where valves are prone to erosion and blockage

By combining knife gate functionality with ceramic technology, these valves are engineered for the realities of modern heavy industry – not just clean fluids.

Built for Harsh Slurries and Corrosive Media

The ceramic knife gate valve from KV Controls is ideal for solid and slurry handling in:

Ash handling systems
Sludge and sewage pipelines
Coal slurry and abrasive mine process lines
Pulp and paper stock
Stone coal systems in thermal power plants

In these applications, the valve must cut through solids, avoid jamming, and maintain tight shut-off despite ongoing wear and corrosive attack. Ceramic sealing surfaces give the valve the durability and stability needed to cope with these demanding conditions.

Where Ceramic Knife Gate Valves Are Used

Because of their abrasion and corrosion resistance, ceramic knife gate valves are a strong fit for:

Mining and Minerals

Tailings and concentrate lines
Coal slurry pipelines
Thickener underflow and abrasive transfer lines

Power Generation

Stone coal systems in thermal power plants
Fly ash and bottom ash handling
Slurry disposal and return lines

Pulp & Paper

Pulp stock lines containing fibre and fillers
Recycled fibre systems
General abrasive, corrosive liquor streams

Wastewater and Industrial Effluent

Sewage, sludge and grit handling
Industrial effluent with solids and corrosive components

Wherever there is a mix of abrasion, corrosion and solids, ceramic knife gate valves add noticeable value.

Why Choose KV Controls as Your Valve Partner?

When you specify ceramic knife gate valves through KV Controls, you get more than just a product:

Application knowledge in mining, power, pulp, wastewater and industrial markets
Correct valve sizing and selection based on your actual slurry conditions
Integration with your existing valve and actuation base
Local technical support for commissioning, troubleshooting and optimisation

The result is a reliable, long-term solution for your most aggressive slurry lines.

Call to Action

If you are experiencing rapid valve wear, frequent blockages or costly downtime on slurry lines, it’s time to consider ceramic technology.

Contact KV Controls to discuss your process, media and operating pressures. Our team will help you determine whether a ceramic knife gate valve is the right choice and recommend a configuration tailored to your plant.