Reliable Knife Gate Valves for Slurry, Mining & Industrial Applications

The KV Controls DQ Series Knife Gate Valve is a compact, lightweight and reliable isolation valve designed for slurry, wastewater, pulp & paper, mining and industrial process applications. Engineered for dependable shut-off performance in demanding operating conditions, the DQ Series is suitable for handling abrasive media, suspended solids, fibers and viscous process fluids.

Available in manual handwheel and pneumatic actuator configurations, the DQ Series knife gate valve is designed to reduce maintenance requirements while providing excellent sealing performance and long operational service life.

The specially engineered gate profile allows the valve to cut effectively through fibrous and solids-containing media, making it an ideal solution for severe-service isolation applications across multiple industries.

What Is the DQ Series Knife Gate Valve?

The DQ Series knife gate valve is a wafer-style linear isolation valve designed for handling difficult process media such as slurry, wastewater, pulp stock, coal slurry, sewage and fiber-rich fluids. The valve uses a sharpened gate edge that cuts through suspended solids and process media during operation to provide reliable shut-off performance.

Its compact design simplifies installation while the heavy-duty gate and replaceable seat options improve operational reliability in abrasive and corrosive service conditions.

Compact & Lightweight Valve Design

The compact wafer-style body design reduces installation space requirements while maintaining high-strength construction for industrial process systems.

Reliable Shut-Off Performance

The DQ Series is engineered for dependable isolation performance in applications where conventional valves may clog, leak or experience excessive wear.

Designed for Difficult Process Media

The specially profiled gate design improves cutting capability through fibrous and solids-laden media commonly found in slurry and wastewater systems.

DQ Series Knife Gate Valves for Mining & Slurry Applications

The DQ Series knife gate valve is widely used across mining and mineral processing operations where abrasive slurry, tailings and solids handling systems require reliable isolation performance.

Mining & Mineral Processing

Mining operations require valves capable of handling abrasive and high solids-content process streams. The DQ Series provides reliable isolation for slurry pipelines, process water systems and mineral handling applications.

Slurry & Tailings Applications

The abrasion-resistant gate design and replaceable seat configurations improve valve performance in slurry and tailings systems where severe wear conditions are present.

Wastewater & Sewage Systems

DQ Series knife gate valves are commonly used in wastewater treatment plants for sludge handling, screening systems and sewage isolation applications.

Pulp & Paper Applications

The sharpened gate edge is designed to cut effectively through pulp stock and fibrous media, improving operational reliability in pulp and paper processing systems.

Chemical Processing Applications

Various seat and body material options allow the DQ Series knife gate valve to be used in corrosive and chemical process environments.

DQ Series Knife Gate Valve Features & Benefits

The DQ Series knife gate valve incorporates several design features intended to improve sealing performance, reduce maintenance and extend valve service life.

Arc-Shaped Gate Design

The specially engineered arc-shaped gate improves cutting performance through suspended solids, fibers and slurry media.

Hard Chrome Plated Gate

The gate is precision ground and hard chrome plated to improve abrasion resistance and corrosion protection in severe-service applications.

Replaceable Seat Design

Replaceable seat options reduce maintenance costs and simplify servicing procedures. Seat materials are available in EPDM, PTFE and metal seated configurations.

Double Stem Bearing Design

Double stem bearings reduce operating torque and improve smooth valve operation during opening and closing cycles.

Internal Packing Design

Internal packing housed within the valve body improves compactness and reduces leakage risk.

Pneumatic & Manual Operation

The DQ Series is available with manual handwheel or pneumatic actuator configurations depending on process control requirements.

Bi-Directional Sealing Capability

Soft seated configurations provide reliable sealing performance in bi-directional applications under specified operating conditions.

Technical Specifications

The DQ Series knife gate valve is available in multiple sizes, pressure ratings and material configurations to suit different industrial process applications.

Available Sizes

DN50 to DN1200

Pressure Ratings

• PN10
• PN16
• ANSI150

Seat Materials

• EPDM
• PTFE
• Metal seated

Temperature Ranges

• Metal seats: -20°C to 100°C
• PTFE seats: -20°C to 120°C
• EPDM seats: -20°C to 100°C

Connection Types

• Wafer style connections
• EN1092-2 PN10/PN16
• ANSI150 flange compatibility

Available Actuation Options

• Manual handwheel
• Pneumatic actuator
• Electric actuator (optional)

Applicable Media

Suitable for:

• Slurry
• Tailings
• Sewage
• Pulp stock
• Coal slurry
• Syrup
• Slag
• Wastewater
• Fiber-containing media

Why Choose the KV Controls DQ Series Knife Gate Valve?

KV Controls supplies industrial knife gate valves designed for African mining, slurry and industrial operating conditions. Our valve solutions focus on reliability, reduced maintenance requirements and lower total cost of ownership.

Designed for Harsh Operating Conditions

The DQ Series is designed to handle abrasive and solids-containing process media commonly found in mining and industrial systems.

Reduced Downtime & Maintenance

Replaceable seats, abrasion-resistant components and robust construction help reduce maintenance requirements and improve service life.

South African Technical Support

KV Controls provides local technical support, application guidance and industrial valve expertise across South Africa and Africa.

Reliable Industrial Isolation Performance

The DQ Series provides dependable shut-off performance for demanding slurry, wastewater and process isolation applications.

Frequently Asked Questions

What is the DQ Series knife gate valve used for?

The DQ Series knife gate valve is used for slurry, wastewater, mining, pulp & paper and industrial isolation applications involving solids-containing or abrasive process media.

Is the DQ Series suitable for slurry applications?

Yes. The DQ Series is designed for abrasive slurry and solids handling applications commonly found in mining and mineral processing systems.

What seat materials are available?

Available seat materials include EPDM, PTFE and metal seated configurations.

Can the DQ Series be automated?

Yes. The DQ Series knife gate valve is available with pneumatic actuator configurations and optional electric actuation.

What industries use the DQ Series knife gate valve?

The DQ Series is widely used in mining, wastewater treatment, pulp & paper, chemical processing and industrial process applications.

Is the DQ Series available in pneumatic operation?

Yes. Pneumatic actuator configurations are available for automated process control applications.

What sizes are available?

The DQ Series is available in sizes ranging from DN50 to DN1200 depending on application requirements.