Knife Edge Gate Valve

Knife Edge Gate Valve

Product Overview

The VSAN Knife Edge Gate Valve is a heavy-duty isolation valve specifically designed for handling slurries, viscous fluids, abrasive media, powders, bulk solids, and process liquids in demanding industrial applications. Engineered with a sharp-edged gate (blade), the valve is capable of cutting through thick, fibrous, and solid-laden media, ensuring reliable shut-off even under severe operating conditions.

Unlike conventional gate valves, the VSAN Knife Edge Gate Valve features a precision-machined stainless steel blade that moves vertically through the valve body to open or close the flow path. The sharpened gate is specially designed to cut through suspended solids, sludge, pulp, and semi-solid materials, preventing clogging and ensuring smooth operation. This makes the valve an ideal solution for applications where standard valves may fail due to media buildup or blockage.

Manufactured using premium-quality materials such as Cast Iron (CI), Ductile Iron (DI), Carbon Steel (WCB), Stainless Steel (SS304, SS316, SS316L), Duplex Stainless Steel, and other corrosion-resistant alloys, the valve is built to withstand harsh industrial environments. Various seat materials, including EPDM, NBR, PTFE, Viton, Polyurethane, and Metal Seats, are available to suit different process conditions and media compatibility.

The VSAN Knife Edge Gate Valve is available in Wafer Type, Lug Type, Flanged Type, Bi-Directional, Uni-Directional, and Through-Conduit Designs. It can be operated manually using a handwheel, chain wheel, bevel gear, or automatically using Pneumatic Cylinder Actuators, Electric Actuators, Hydraulic Actuators, and Electro-Pneumatic Control Systems, making it suitable for both manual and automated process control.

Designed in accordance with international standards such as MSS SP-81, ASME B16.5, BS EN 1092-1, API 598, and ISO 5211, the VSAN Knife Edge Gate Valve provides dependable sealing performance, low maintenance, and long service life. It is available in pressure ratings including PN10, PN16, ANSI Class 150, and higher ratings depending on application requirements.

The valve supports optional accessories such as limit switches, proximity sensors, position indicators, solenoid valves, electro-pneumatic positioners, and smart valve controllers, enabling seamless integration with PLC, DCS, SCADA, and Industrial Automation Systems.

With its rugged construction, excellent abrasion resistance, and superior shut-off capability, the VSAN Knife Edge Gate Valve is widely used in Mining, Cement Plants, Power Plants, Paper & Pulp Mills, Sugar Industries, Chemical Processing, Wastewater Treatment Plants, Steel Plants, Food Processing, Bulk Material Handling Systems, and Industrial Utility Networks.

The VSAN Knife Edge Gate Valve provides reliable isolation of difficult process media while ensuring efficient operation, reduced downtime, and long-term performance in the most demanding industrial applications.

Working Principle

The VSAN Knife Edge Gate Valve operates on the Linear Sliding Gate Principle.

The valve consists of a sharp-edged stainless steel blade that moves vertically inside the valve body. When the actuator or handwheel is operated, the blade moves upward to fully open the flow passage, allowing unrestricted flow through the valve.

To close the valve, the blade moves downward and passes through the flowing media. The sharpened edge of the gate cuts through suspended solids, fibrous materials, sludge, and other abrasive media before sealing tightly against the valve seat. This cutting action prevents blockage and ensures reliable shut-off even in applications containing high solid concentrations.

Depending on the application, the valve may be designed for uni-directional or bi-directional sealing. Automated versions use pneumatic, electric, or hydraulic actuators for remote operation and process automation.

The simple linear operating mechanism, combined with the robust blade design, provides reliable isolation, low operating torque, and excellent durability in severe service conditions.

Key Features

  • Knife Edge Sliding Gate Design
  • Designed for Slurry & Abrasive Media
  • Excellent Shut-Off Performance
  • Sharp Stainless Steel Blade
  • Cuts Through Suspended Solids and Fibrous Materials
  • Suitable for High Solid Content Fluids
  • Compact and Lightweight Construction
  • Low Pressure Drop
  • Available in Wafer, Lug & Flanged Designs
  • Uni-Directional and Bi-Directional Models Available
  • Manual, Pneumatic, Electric & Hydraulic Actuation Options
  • Corrosion and Abrasion Resistant Construction
  • Multiple Body Material Options (CI, DI, WCB, SS304, SS316, Duplex SS)
  • Multiple Seat Materials (EPDM, NBR, PTFE, Viton, Polyurethane, Metal Seat)
  • Low Maintenance Requirements
  • Long Service Life
  • Factory Pressure Tested
  • Easy Installation and Replacement
  • Compatible with PLC, DCS & SCADA Systems
  • Designed to MSS, API, ASME & ISO Standards

Applications

The VSAN Knife Edge Gate Valve is widely used in industries handling abrasive, corrosive, and solid-containing process media.

Mining Industry

  • Slurry Pipelines
  • Mineral Processing Plants
  • Tailings Disposal Systems
  • Ore Handling Systems

Water & Wastewater Industry

  • Sewage Treatment Plants (STP)
  • Effluent Treatment Plants (ETP)
  • Sludge Handling Systems
  • Wastewater Transfer Lines

Paper & Pulp Industry

  • Pulp Stock Lines
  • Paper Slurry Systems
  • Chemical Recovery Plants
  • Waste Pulp Handling

Cement Industry

  • Cement Slurry
  • Fly Ash Handling
  • Pneumatic Conveying Systems
  • Bulk Material Transfer

Power Generation

  • Ash Handling Systems
  • Bottom Ash Slurry
  • Coal Handling Plants
  • Cooling Water Utilities

Chemical Industry

  • Chemical Slurries
  • Corrosive Process Fluids
  • Acid & Alkali Service
  • Process Utility Lines

Food & Beverage Industry

  • Sugar Syrup Processing
  • Starch Slurry
  • Food Waste Handling
  • Process Liquids
S.No User Manual Download
No User Manual Available.
S.No Document Name Download
No Downloads Available.

© 2026 VSAN GROUP. All Right Reserved. Designed & Developed by Web Design and Digital Marketing Company in Chennai |Innov Touch Technologies Pvt Ltd | Web Design and Digital Marketing Company in Chennai Innov Touch Technologies Pvt Ltd.

whatsapp