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Model HM-NR - Check Valve

Model HM-NR - Check Valve

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The valve closes totally the pipe line when back flow occurs. The valve is complete with an hydraulic control circuit able to regulate operation’s speed during closing, preventing surge.

  • Pump protection; prevention of line emptying; balance in interconnected hydraulic lines.

  • simple structuration, compactedness and easy disassembly
  • head loss and cavitation risks reduction
  • special hydraulic profile
  • excellent corrosion strenght
  • conformity with both European and American standards
  • easy installation
  • multiple function, V-PORT plug option
  • perfect seal

  • water supply and distribution
  • fire protection systems
  • water treatment
  • fuel stock plants
  • water supply stations (airports, marine and fluvial ports)
  • sport centers (swimming pools, aquariums, amusement parks)
  • pump stations

  • high hydrodynamic section globe body, without stagnation pockets
  • standard ductile cast iron casting
  • epoxy-polyester resin powder painting
  • entirely guided travel seal disc
  • standard stainless steel seal seat with cavitation risks reduction
  • open pass no less than 80% of nominal diameter
  • optional V-PORT seal disc
  • stainless steel exagonal heads bolts
  • wax sealing on request
  • stainless steel shaft, seal disc, spacer and return spring
  • reinforced NBR diaphragm
  • on request Viton diaphragm
  • easy maintenance and access to internal parts without removing the valve from the pipeline
  • purchased valve function can easly be changed with simple pilot circuit modifications

Applications

  • Automatic hydraulic valves and water control solutions for Waterworks sector - Water and Wastewater

    Automatic hydraulic valves and water control solutions for Waterworks sector - Water and Wastewater

    TECNIDRO products are specifically designed in order to grant multiple solutions in water supply, network protection and efficiency. TECNIDRO manufacture 3 different line of automatic control valves, each line specifically designed to greatly improving supply and distribution system efficiency while helping to save water and reduce usage through pressure optimization. This efficiency means also an overall cost reductions, due to longer life components and simpler maintenance.

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