Heavy-Duty Slurry Knife Gate Valves for Mining & Abrasive Applications

The KV Controls DK Series Slurry Knife Gate Valve is a heavy-duty full-port isolation valve specifically designed for abrasive slurry, mining, tailings and solids handling applications. Engineered for severe-service operating conditions, the DK Series provides reliable bi-directional zero-leakage sealing performance while reducing flow resistance and minimizing media build-up in slurry process systems.

Featuring a cavity-free body design, resilient rubber seats and a hard chrome plated cone-shaped gate, the DK Series knife gate valve delivers reliable shut-off performance in demanding slurry applications involving abrasive media, mineral slurry, pulp stock and high solids-content process streams.

Available in manual, pneumatic and automated configurations, the DK Series is designed to reduce maintenance requirements and improve operational reliability in mining and industrial process systems.

What Is the DK Series Slurry Knife Gate Valve?

The DK Series slurry knife gate valve is a full-port severe-service isolation valve designed to handle abrasive slurry, tailings, pulp stock and solids-laden process media commonly found in mining and mineral processing applications. The valve incorporates a cone-shaped gate design and resilient abrasion-resistant rubber seats to provide reliable shut-off performance and extended operational service life.

The cavity-free valve body design prevents solid accumulation inside the valve body, reducing the risk of clogging and improving operational reliability in continuous slurry service applications.

Full-Port Slurry Flow Design

The full-port valve configuration provides unobstructed media flow and reduced pressure losses during operation.

Cavity-Free Valve Body

The lightweight two-piece valve body is designed without internal cavities to minimize solids accumulation and prevent media build-up.

Reliable Slurry Isolation Performance

The DK Series is specifically engineered for slurry isolation applications requiring dependable shut-off performance under abrasive operating conditions.

DK Series Slurry Knife Gate Valves for Mining & Severe-Service Applications

The DK Series knife gate valve is widely used across mining, mineral processing and industrial slurry handling applications where abrasion resistance and reliable sealing performance are critical.

Mining & Mineral Processing Applications

Mining operations require heavy-duty slurry valves capable of handling abrasive mineral slurry, tailings and high solids-content process streams. The DK Series is designed to provide reliable isolation performance in severe mining environments.

Tailings & Slurry Pipeline Systems

The abrasion-resistant gate design and resilient rubber seats improve operational reliability in slurry transport and tailings pipeline applications.

Abrasive Slurry Handling Applications

The hard chrome plated cone-shaped gate delivers strong cutting force and improved resistance against abrasive process media.

Pulp & Paper Applications

The DK Series is suitable for pulp stock and fiber-containing process media requiring reliable isolation performance and reduced clogging risk.

Wastewater & Industrial Process Applications

The valve is also used in wastewater treatment plants and industrial solids handling systems involving difficult media and continuous operation.

DK Series Slurry Knife Gate Valve Features & Benefits

The DK Series incorporates several severe-service design features intended to improve slurry handling performance and reduce maintenance costs.

Cone-Shaped Gate Design

The specially engineered cone-shaped gate delivers strong cutting force for handling slurry, pulp and solids-containing media.

Hard Chrome Plated Gate

Precision-ground hard chrome plated gates improve abrasion resistance and corrosion protection in severe-service applications.

Abrasion-Resistant Rubber Seats

Die-cast resilient rubber seats with metal reinforcement rings improve sealing performance and extend valve service life.

Bubble-Tight Bi-Directional Sealing

The DK Series provides reliable bi-directional zero-leakage sealing performance under specified operating conditions.

No Internal Cavities

The cavity-free body design prevents solid accumulation and reduces the risk of valve blockage during slurry operation.

Low Flow Resistance

The full-port design minimizes pressure losses and improves process flow efficiency.

Removable Bottom Discharge Cover

The removable bottom discharge cover simplifies cleaning and maintenance procedures for continuous slurry applications.

Pneumatic & Automated Operation

The DK Series is available with manual handwheel, pneumatic actuator and automated control configurations.

Technical Specifications

The DK Series slurry knife gate valve is available in multiple sizes, pressure classes and material configurations to suit severe-service slurry applications.

Available Sizes

DN50 to DN600

Pressure Ratings

• PN10
• PN16
• PN25
• ANSI150

Seat Materials

• NBR
• EPDM
• Natural Rubber
• Viton

Temperature Ranges

• NBR seats: -20°C to 120°C
• EPDM seats: -20°C to 100°C
• Natural Rubber seats: -20°C to 70°C
• Viton seats: -20°C to 200°C

Connection Type

• Lugged configuration

Applicable Media

Suitable for:

• Slurry
• Tailings
• Mineral slurry
• Pulp stock
• Water
• Abrasive process media

Leakage Performance

• Zero leakage
• Bi-directional sealing capability

Valve Standard

• MSS SP-81

Available Actuation Options

• Manual handwheel
• Pneumatic actuator
• Electric actuator
• Automated control systems

Why Choose the KV Controls DK Series Slurry Knife Gate Valve?

KV Controls supplies severe-service slurry valve solutions designed for demanding mining and industrial operating conditions across South Africa and Africa.

Designed for Abrasive Slurry Applications

The DK Series is specifically engineered for severe slurry handling applications requiring abrasion resistance and reliable shut-off performance.

Reduced Maintenance & Downtime

The cavity-free body design, removable discharge cover and abrasion-resistant components help reduce maintenance requirements and operational downtime.

Reliable Zero-Leakage Isolation

Bubble-tight bi-directional sealing performance improves operational reliability in slurry and tailings systems.

South African Technical Support

KV Controls provides local technical support, application expertise and industrial valve solutions tailored for African mining and process industries.

Frequently Asked Questions

What is the DK Series slurry knife gate valve used for?

The DK Series is used for abrasive slurry, mining, tailings, pulp and solids handling applications requiring reliable severe-service isolation performance.

Is the DK Series suitable for mining slurry applications?

Yes. The DK Series is specifically designed for mining slurry and mineral processing systems involving abrasive and high solids-content media.

What are the advantages of a full-port slurry valve?

Full-port slurry valves provide unrestricted media flow, lower pressure losses and reduced clogging risk during operation.

Does the DK Series provide bi-directional sealing?

Yes. The DK Series provides reliable bi-directional zero-leakage sealing performance.

What seat materials are available?

Available seat materials include NBR, EPDM, Natural Rubber and Viton configurations.

Can the DK Series be automated?

Yes. The DK Series is available with pneumatic, electric and automated actuation systems.

What industries use the DK Series slurry knife gate valve?

The DK Series is widely used in mining, mineral processing, pulp & paper, wastewater and industrial slurry handling applications.