Wafer Slurry Knife Gate Valve

FPV

Wafer Slurry Knife Gate Valve

The Wafer Slurry Knife Gate valve has been designed as a space-saving option for slurry applications. The full port design allows the gate to be fully isolated by the sleeve in the open position. When the valve is closed the gate pushes between the sleeves ensuring 100% Bidirectional bubble-tight seal and zero downstream leakage.

Premium materials are supplied standard on all valves.

Product features

Specifications
Size range:2″ – 24″ (50mm – 600mm)
Valve type:Slurry knife gate
Body styleNarrow body (wafer)
Temperature range:176°F (80°C)
Pressure rating:Up to 240 psi (16 bar)
Body material:Cast ductile iron, 2 coat epoxy painted or Stainless steel
Gate material:17-4PH Stainless Steel, 316L Stainless Steel, 2205 Duplex Stainless Steel, 2507 Duplex Stainless Steel, C276 HASTELLOY
Gate/blade:Coated with Fluoro-carbon coating
Sleeve Material:Gum rubber, high-temp EPDM, Neoprene, Nitrile, Chlorobutyl
Duty:Abrasive applications
Hydro-static test:1.5 Times the rated pressure

Features
  • Bellows and Stem cover for protection.
  • Face to Face – MSS SP81.
  • Fluoro-Carbon coated gate to reduce friction and add wear life to seats.
  • Full Port, Bi-Directional design at 16 Bar (240Psi).
  • High strength stainless steel blade.
  • Lightweight design for easy handling.
  • Long-lasting lubrication.
  • Long-wearing replaceable sleeves.
  • Low maintenance requirements.
  • Lubrication ports.
  • Manual lockout option available.
  • Manual or Automated actuators are available.
  • Metric & Imperial flange drilling.
  • No pressure drop across the valve.
  • No seat cavity where solids can collect and prevent full gate closure.
  • Stuffing box with gland follower.
  • The open body prevents gate damage during actuation.
  • Two coat Epoxy paint.
  • Two-piece wafer body.
  • Universal tower frame.
  • Zinc coated hardware.

HOW THE RUBBER SLEEVE WORKS

Matching rubber ring sleeves with stiffener rings are placed in the valve housing to seal against the gate when the valve is closed and seal against each other when the valve is open. This tight seal contains the high internal line pressure. The double-seated design provides bi-directional flow and shut-off.

Applications

The valve is suited for mining and mineral processing, power generation, sand/gravel, chemical & soda ash, pulp & paper, environmental & effluent, dry feeds and powders.

Actuators

All types of actuators can be fitted; electric, gearbox, hydraulic, pneumatic and handwheel. (Choice of an operator is based on valve size & pressure.)

Accessories

  • Limit switches
  • PTFE blade coating
  • Various blade materials
  • Gate safety guards
  • Deflector cone
  • Splash guard

Dimensions and Weights

Dimensions and weights are for guidance only – detailed dimension drawings are available on request.
All dimensions are in millimetres, unless otherwise stated.

Valve Diaphragm

Valve
Size
A B*CDEFGHJKMNPRMH
kg
BG
kg
AC
kg
HC
kg
5017557101486563540559475019013338430030019192723
8020362124567611627640717622216240030030024243730
100243621196216396676929610126617542250050033334138
1502796814674883880382514715232023144950050039396442
2003428117888792493996219620337426147650050063638464
2504168220910431125111511372472544443396065005008787145100
30048288247120712731289297304517341738600600166166220141
35053388273134013691372329336572374765600600195195292168
400603101301143515001503381387621374790600600234234328238
450647103308168017281737431438668431768700700253253374283
500711130368182318781882483489712479790700700325325519335
600838131419216222162235589595889479878700700468468719513