Soft Seated Knife Gate Valve

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Soft Seated Knife Gate Valve India

The Soft Seated Knife Gate Valve from Controtek Global is an incredibly effective way to regulate the flow of viscous fluids, wastewater, and slurries in industrial processes. These valves, which have a sturdy soft seat made of rubber or elastomer, have excellent sealing qualities that enable a bubble-tight shut-off even in harsh conditions. By providing leak-free operation and decreased friction during actuation, the soft seat material guarantees that the valve will perform exceptionally well in low to medium pressure applications. These valves are designed for sectors like mining, chemical processing, wastewater treatment, and the pulp and paper industry that need dependable flow control and the capacity to handle solids-laden media.

Cast Iron Knife Gate Valve

Features of Soft Seated Knife Gate Valve

  • Resilient Soft Seat
  • Wide Temperature Range
  • Smooth Operation
  • Versatile Actuation
  • Standardized Mounting
  • Wide Application Range

Applications of Soft Seated Knife Gate Valve

  • Mining & Mineral Processing
  • Managing sludge and wastewater
  • Corrosion-resistant valve solutions for seawater
  • Handling hydrocarbons and other process fluids
  • Regulating pulp stock, paper slurry, and other fibrous media
Soft Seated Knife Gate Valve - Technical Specification
Manufacturer Controtek Global
Valve Type Soft Seated Knife Gate Valve
Body Material Stainless Steel (SS304, SS316), Carbon Steel (ASTM A216 WCB), or Duplex Stainless Steel
Gate Material Stainless Steel or Carbon Steel
Seat Material Soft Elastomers: EPDM, NBR, or Other Resilient Materials
Size Range 2” to 48” (DN50 to DN1200)
Pressure Rating ANSI Class 150, 300, 600 (depending on size and application)
Temperature Range -29°C to +120°C (-20°F to +250°F), depending on seat material
End Connections Wafer, Lug, Flanged (ANSI B16.5), or Custom
Operation Type Manual, Pneumatic, Electric Actuation
Stem Type Rising or Non-Rising Stainless Steel Stem
Stem Packing PTFE, Graphite, or Combination for enhanced sealing
Leakage Class Class VI (bubble-tight shut-off)
Face-to-Face Dimensions As per MSS-SP-81 / Manufacturer Standard
Mounting Standard ISO 5211 compliant for actuator mounting
Testing Standards API 598, MSS-SP-81, EN 12266-1 (Shell and Seat Leakage Tests)
Coating (Optional) Epoxy or other protective coatings available
Weight Varies by size and material
Applications Mining, Water Treatment, Chemical, Pulp & Paper, Food & Beverage, Petrochemical

Frequently Asked Questions

1. What is a Soft Seated Knife Gate Valve? + A Soft Seated Knife Gate Valve is an industrial valve designed to isolate and control the flow of liquids, slurries, powders, and other media. It uses a soft elastomeric seat to provide a tight seal when the knife gate is closed.
2. Where are Soft Seated Knife Gate Valves commonly used? + Soft Seated Knife Gate Valves are widely used in water treatment, wastewater treatment, mining, pulp and paper, chemical processing, food processing, and slurry handling applications where reliable shut-off is required.
3. What are the main advantages of Soft Seated Knife Gate Valves? + These valves offer tight shut-off, reliable sealing, compact construction, easy operation, and relatively low maintenance. The soft seat helps minimize leakage and provides effective isolation for many liquid and slurry applications.
4. Can Soft Seated Knife Gate Valves handle slurry and abrasive media? + Yes, Soft Seated Knife Gate Valves can handle many slurry applications when the correct seat and valve materials are selected. For highly abrasive media, the suitability of the soft seat should be evaluated based on particle size, concentration, temperature, and operating conditions.
5. How does a Soft Seated Knife Gate Valve operate? + The valve operates by moving a sharp-edged knife gate vertically between the open and closed positions. When closed, the gate contacts the soft seat to create a tight seal and stop the flow through the pipeline.
6. What maintenance is required for a Soft Seated Knife Gate Valve? + Regular maintenance includes inspecting the soft seat, knife gate, stem, packing, and sealing components for wear or damage. Removing accumulated deposits and checking the valve for smooth operation and leakage helps maintain reliable performance and extend service life.
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