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The Mucon® Disc Valve is a radially pivoting isolation swing gate valve suitable for applications involving temperature and pressure. The advanced version Easy Maintenance Disc Valve allows the removal of the internal moving parts while the valve body remains in place. The inlet liner is separate and does not have to be made from the same material as the valve body. Unlike many slide valves, the Disc Valve does not jam or leak, this is due to its unique angled seat and floating disc arrangement. The Easy Maintenance Disc Valve is available in 100mm & 200mm sizes only with three main construction materials; aluminium, cast iron and stainless steel. Pneumatic versions available. Customers have told us of disc valves (swing gate valves) completing many thousands of operations before any attention is required. The swing gate valve, a valve specification which encompasses all the advantages found in slide and butterfly valves, but with none of the disadvantages. A radially pivoted arm supports a free floating disc. The arm allows the disc to swing in an arc towards an angled seating face. The angled face ensures the disc only makes contact at the last moment causing a mild wedging action.


  • Constructed of three materials including aluminum alloy, cast iron and stainless steel
  • Flanges drilled to BS4504 PN10- PCD & No. of holes only, not hole size
  • Handle with Spring plunger operation


  • Applications for swing gate valves include the following
  • Silo sischarge valves for heavy duty products such as cement powder, limestone powder and sand
  • Isolation valves between silos and screw conveyors valves for feeding reactor vessels (two products react together)
  • Valves can be used in pairs for volumetric dosing into processes
  • Charging dense phase conveying blow pots hot ash collection hoppers


  • A variety of seal materials to suit the most arduous process or clean downs
  • A variety of shaft bearing materials Various coatings are also available for extreme applications
  • Open and closed and intermediate position indication switches
  • Can be upgraded for ATEX Zone 21/22 dust


  • Non jamming action
  • Full bore discharge
  • Ability to cut through a static column of product
  • 100% product shut-off replaceable seating face
  • Easy replacement of disc seal
  • Dust tight
  • Long life and low maintenance


  • There are no slide guides on the swing gate valve to jam or collect product
  • The shaft only passes through the body casting and is easily sealed using a proprietary seal assembly
  • A dovetail groove in the seating face locates another proprietary seal ensuring a dust tight closure
  • The swing gate valve outlet is always larger than the inlet, ensuring no product hang-up points internally In-situ seal wear adjustment
  • Three purge points are built into the valve body for ease of cleaning

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