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Сheck valves Danfoss NRVH ensure the correct flow direction and prevent back condensation from a warm part of the system to the cold evaporator. They can be used in liquid, suction and hot gas lines in refrigeration and air conditioning plants. Valves are intended for work with HCFC, HFC and HC flammable refrigerants. Danfoss NRVH check valve is with stronger spring and it‘s recommended to use for compressors in parallel (i. e. power packs) where higher level of pulsation and vibration are expected. Special models are available for CO2 units with maximum operating pressure 90 bar.

Built-in damping piston that makes the valves suitable for installation in lines where pulsation can occur, e.g. in the discharge line from the compressor. Сheck valves Danfoss NRVH are available in straight and angle versions. Solder versions compliant with ATEX hazard zone 2.


  • Traditional refrigeration
  • Heat pump systems
  • Air conditioning units
  • Liquid coolers
  • Transport refrigeration

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