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 |