NRV and NRVH piston type check valves are designed for installation in commercial refrigerating systems and in residential or industrial air conditioning plants. They are used to control the unidirectional flow of refrigerant so as to prevent backflow.

• Ensure correct flow direction
• Available in both straightway and angleway versions
• Hermetic tight design for solder versions
• 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
• NRVH type check valve is with stronger spring and is recommended to use for compressors in parallel (i.e. power packs) where higher level of pulsation and vibration are expected
• Max operating pressure: 710 psig