DT-Series Knife Gate Valve: Leading Suppliers in South Africa
At KV Controls, we specialise in reliable, high-performance valve solutions for demanding industrial processes. One of our flagship products is the DT-Series Knife Gate Valve – a robust, low-maintenance valve designed for media that most standard valves struggle with, including slurries, fibres and fluids with high solids content.
As trusted DT-Series knife gate valve suppliers in South Africa, we support plants across key sectors such as pulp and paper, mining, wastewater, chemical processing and more. In this blog, we unpack the design, features, technical specifications and applications of the DT-Series so you can see where it fits in your operation.
What Is a DT-Series Knife Gate Valve?
The DT-Series Knife Gate Valve is an industrial valve designed to handle viscous fluids, slurries and media containing solids. It delivers reliable isolation and control in applications where fibre, stock, dust, grain or abrasive particles would quickly damage or clog conventional valves.
The DT-Series is available as:
Manual valves with handwheel or gearbox
Automated valves with pneumatic cylinders
Electrically actuated valves for full remote or PLC-based control
This makes the DT-Series a versatile solution wherever you need on/off or modulating control in tough process conditions.
Key Features and Benefits of the DT-Series Knife Gate Valve
The DT-Series combines a compact body with a powerful shearing action and easy maintenance design. Core features include:
Compact, Self-Cleaning Body Design
Knife-edge gate slices through stock, fibre and solids to prevent clogging.
Shearing force and auto-cleaning function help keep the seat and gate clear, reducing build-up and sticking.
Removable Seat for Easy Maintenance
Removable seat allows fast replacement without major dismantling.
Reduces downtime and long-term life-cycle costs.
Reliable Sealing and Wear Resistance
Available with metal seat or soft seat, depending on process media and sealing requirements.
Good wear resistance for abrasive or fibre-rich applications.
Full-Bore, Bi-Directional Flow
Full port design provides unobstructed flow when open.
Bi-directional flow capability offers flexibility in piping layouts.
Multiple Actuation Options
Manual (handwheel/gearbox) for simple on-site control.
Pneumatic, hydraulic or electric actuators for automation and remote control.
Robust Materials and Corrosion Resistance
Body materials:
WCB
CF8
CF8M
CF3M
Engineered for corrosion, erosion and wear resistance in harsh operating environments.
Low Maintenance Design
Self-cleaning action and replaceable wear parts support longer service intervals.
Ideal where plant uptime and reduced maintenance costs are priorities.
Technical Specifications – DT-Series Knife Gate Valve
Nominal Diameter (DN): DN50 – DN800
Pressure Rating (PN): PN10 – PN16 / ANSI 150LB
Connection Type: Wafer
Operating Temperature: -29°C to 100°C
Seat Options: Metal Seat / Soft Seat
Tightness / Leakage Class: Class IV
Body Materials:
- WCB
- CF8
- CF8M
- CF3M
Core Applications in the Pulp and Paper Industry
The DT-Series Knife Gate Valve is particularly well suited to the pulp and paper sector, where fibrous and thick media are the norm. Typical applications include:
High concentration cleaners
Weight separators
Aquapulpers
Lines carrying stock, fibre, dust and grain-rich media
In these duties, the DT-Series offers:
Stable shut-off in fibrous pulps
Reduced clogging and plugging
Longer life under abrasive conditions
Wider Industries and Application Scenarios in South Africa
While the DT-Series is highly effective in pulp and paper, its design also fits many other South African industrial sectors where fluids contain solids, slurry or high viscosity.
1. Mining and Mineral Processing
Slurry lines, tailings and process streams with high solids
Abrasive, particle-rich media handling
2. Wastewater and Effluent Treatment
Sewage, sludge and sediment handling
Industrial effluent control and isolation
3. Power Generation
Ash slurries and coal-related media in coal-fired plants
Auxiliary systems where solids or slurry are present
4. Chemical Processing
Corrosive and abrasive chemical slurries
Viscous or solids-laden process streams
5. Food and Beverage Processing
Fruit pulps, sauces and slurries
Wastewater and by-product handling
6. Water and Wastewater Management
Municipal water and wastewater networks
Industrial pre-treatment and distribution systems
7. Oil and Gas (Upstream and Midstream)
Drilling muds and frac fluids
Fluids with suspended solids or high viscosity components
8. Steel, Metals, Aggregate and Cement
Slag, fines, aggregates and cement slurry control
Harsh, abrasive services where wear resistance is critical
In all these scenarios, the DT-Series Knife Gate Valve delivers reliable isolation, reduced clogging and longer service life – helping to keep South African plants running efficiently.
FAQ – DT-Series Knife Gate Valves
Q1: What makes the DT-Series Knife Gate Valve suitable for slurries and fibre-rich media?
A: The DT-Series Knife Gate Valve uses a sharp knife-edge gate with a self-cleaning, shearing action that cuts through stock, fibre and solids instead of trapping them. The full port design and removable seat help prevent clogging, reduce wear and make maintenance faster in slurry and fibre-rich applications.
Q2: In which industries in South Africa are DT-Series Knife Gate Valves most commonly used?
A: DT-Series Knife Gate Valves from KV Controls are widely used in pulp and paper, mining and mineral processing, wastewater treatment, chemical processing, power generation, food and beverage, and water and effluent management – anywhere fluids contain solids, slurry or high-viscosity media.
Q3: Can KV Controls assist with selecting and automating the right DT-Series Knife Gate Valve?
A: Yes. KV Controls helps with valve sizing, pressure class and material selection, as well as specifying pneumatic or electric actuators and integrating the valve into your control system. Our team works with your engineers to ensure the DT-Series Knife Gate Valve is correctly configured for your process and site conditions.
Talk to KV Controls – DT-Series Knife Gate Valve Suppliers in South Africa
If your plant handles slurries, fibres, stock or viscous media, the DT-Series Knife Gate Valve could significantly improve reliability, reduce blockages and lower maintenance costs.
For product support, specifications or a tailored quotation, contact:
At KV Controls, we are committed to supplying high-performance DT-Series knife gate valves that combine control, efficiency and durability – helping South African industries run safer, cleaner and more efficiently.
