4S - V336D Knife Gate Valve

The Sharp Solution to Heavy Fluid Shutoff Problems

 Sludges, slurries, powders. Problem fluids that challenge today’s pulp and paper, chemical, textile and sewage plants. FOURESS meets this challenge, by refining the Knife Gate Valves. A precision-buffed knife plate cuts even the heaviest sludges, sharply and without erosion. One-piece trim provides corrosion-resistant, wear-resistant, high-performance shut-off over a long service life. FOURESS’s compact, lightweight Knife Gate Valves have been handling the industry’s problem fluids dependably for over 30 years.

Perhaps It’s time they handled yours…..

Features

• Tough, No-corrosive trims
  The stainless steel inner body is welded to the cast iron gland. The gland’s polyvinyl chloride coating provides maximum resistance to corrosion and wear.
   
• Precision-buffed stainless steel knife plate
  The stainless steel knife plate is precision-buffed for leaktight shut-off. Its knife-like edge cuts off and shuts off even heavy or high-viscosity fluids.
   
• A choice of three different seat rings
  In addition to the standard stainless steel seat ring, rubber and Teflon® seat rings are available as options. Choose the one best for your fluid control requirements.
  
   
• Plane valve seat to resist build-up
  The plane surface of the valve seat has no recesses to harbour heavy fluid deposits that could build up and swamp the valve.
   
• Leak tight multiplayer gland packing
  The gland packing is Teflon®-impregnated asbestos or vegetable yarn layered with moulded silicon rubber. This chemical-resistant packing provides total sealing.
   
• Bosses for positive seating
  Two bosses are welded to the valve seat. These press the knife plate snugly against the side of the seat right for bubble-tight shut-off.
   
• Smooth handwheel opening/closing
  The double-thread screw on the stem makes opening/closing smooth and speedy.

Material Specification

Flow Characteristic Curve :