40D Heated Knife Gate Valve


The United Conveyor Corporation (UCC) 40DH Knifegate Valve is designed specifically for on/off pipeline isolation service in pneumatic conveying applications of ash exposed to dry scrubbers and dry sorbent injection systems. The 40DH utilizes UCC’s proven 40D knife gate technology with a heated blade to help prevent material buildup. This helps improve the life of the packing, blade, and body in these extreme applications


The heated blade prevents material build-up which improves packing seal performance and life.

UCC’s spring-loaded packing gland design maintains seal pressure during operating and prevents leaks, minimizing maintenance and extending the life of the blade and packing.

The 40DH has three different configurations utilizing a replaceable dual seat, flow cone, or wear liner to increase the valve wear life and allow for economical rebuilds.



  • Valve sizes: 4” – 14”
  • Valve connection: ANSI Class 150
  • Operating pressure: 40psi
  • Operating temperature: 400F
  • Dual seat crossover, wear liner branch line, or flow cone branch line configurations
  • Accessories
    • Air cylinder, handwheel, chainwheel, or motor operator
    • Solenoid
    • Limit switches
    • Purge air kit
    • Lockout kit
    • Guard
    • Pre-piped and wired junction box

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