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 1A 2CDEFGHJKLAC
kg
HC
kg
MH
kg
BG
kg
5059541975114448930048330065524350
8064572325937356830055930056432484705560
10064572736619864530062030064932495857580
15070643408181499403007773008103711451009090
20083763979601981143500916500946371190145140140
25084764511106248133450010685001118371325225200200
3009083533130229914135001321425493320375350
3509083581139733015626001403425655377450480
40010395635156238117536001549425736535525525
45010595686174543217536001746492840650670650
5001321217331930483193060019274921165760730780
6001331218482199587221560022134921650112010001200