Knife Gate Valve Manufacturer in India
Speciality Valve is a trusted Knife Gate Valve Manufacturer in India, offering robust, corrosion-resistant valves engineered for challenging slurry, viscous, and abrasive flow conditions. Designed for minimal pressure drop and maximum sealing integrity, our knife gate valves are built to deliver reliable shut-off and long-term performance across diverse industrial sectors.
Function & Working
Knife gate valves are designed for on-off and isolation service in pipelines handling solids, slurries, or fibrous materials. The sharp-edged gate slides through thick or abrasive media to provide a tight seal and prevent clogging.
When actuated, the gate lifts completely clear of the flow path to minimize pressure loss. Upon closing, it descends smoothly onto the seat, cutting through suspended particles to achieve bubble-tight sealing.
Advantages
Effective shut-off in slurry and viscous media
Compact, lightweight, and cost-efficient for large diameters
Minimal pressure loss when open
Simple construction and easy maintenance
Suitable for manual or automated actuation
Types Offered
Uni-Directional Knife Gate Valve
Bi-Directional Knife Gate Valve
Through-Conduit Knife Gate Valve
Slurry Knife Gate Valve
Flanged Knife Gate Valve
Industries Served
Mining and Mineral Processing
Wastewater and Effluent Treatment
Pulp and Paper Industry
Chemical and Fertilizer Plants
Power Generation and Ash Handling
Marine, Offshore, and Dredging Applications
Cement and Bulk Handling Systems
Oil and Gas Transmission
Technical Specifications
Design Standards: API 6D, API 607, ASME B16.34, MSS SP-81, EN 593, AWWA C520, DIN / BS / ANSI
Size Range: DN15 – DN1600 (½″ – 64″)
Pressure Ratings: Class 150 – 2500 / PN10 – PN450
End Connections: Wafer, Lug, Flanged
Operation: Handwheel, Gear, Electric, Pneumatic, or Hydraulic Actuated
Material of Construction
Component | Material Grades / Standards | Application / Service |
---|---|---|
Body / Bonnet | CF8 / CF8M / CF3 / CF3M, SS304, SS316, SS904L, Duplex F51, Super Duplex F53 / F55, Inconel 625 / 825, Monel 400 / K500, Titanium Gr.2 / Gr.5, Aluminium Bronze C95800, Bronze, Ductile Iron | Corrosive, slurry, seawater, and chemical service |
Gate / Disc | SS316, SS316L, Duplex, Super Duplex, Inconel, Hard-faced (Stellite, ENP, HVOF) | Abrasive or high-wear applications |
Seat | Metal-to-Metal / Resilient (EPDM, NBR, PTFE, Viton) | Bubble-tight sealing in liquids or slurries |
Stem | 17-4 PH, SS410, SS316, Duplex | Corrosion-resistant and high-strength service |
Gland / Packing | Graphite, PTFE, PTFE-Graphite Blend | Low friction, leak-proof stem sealing |