NRV and NRVH check valves can be used in liquid, suction and hot gas lines in refrigeration and air
conditioning plants with fluorinated refrigerants. The valves ensure the correct flow direction and
prevent back-condensation from a warm part of the system to the cold evaporator. A built-in damping
piston makes the valves suitable for installation in lines where pulsation can occur, e.g. in the discharge
line from the compressor.