NRV refrigeration check valves

  • Overview
  • Documents
  • Software
  • Learning

Optimized for use in liquid, suction and hot gas lines

The Danfoss NRV and NRVH check valves are optimized for use in liquid, suction and hot gas lines in air conditioning applications to ensure correct flow direction. The NRVH valve is especially designed for systems where compressors are connected in parallel.

Features and benefits

The valves can be used for fluorinated refrigerants as well as CO2

Straightway and angleway versions are available

Supplied with flare and solder connections

Available with oversize connections for easy installation

NRVH is supplied with spring to Δp = 0.3 bar (4 psi)

Access to the product store

Find all the information you need about these products.


Type Name Language Valid for Updated Download File type
Data sheet Check valve, type NRV and NRVH English Multiple 18 Mar, 2021 4.5 MB .pdf
Data sheet Check valve, type NRV and NRVH Ukrainian Ukraine 11 Jul, 2023 6.1 MB .pdf
Data sheet NRV check valve CO2 English Multiple 12 Jan, 2020 574.8 KB .pdf
Data sheet Обратный клапан, Клапаны типа NRV и NRVH, версия 2 Russian Multiple 25 May, 2020 2.9 MB .pdf



The truth is Cool(selector®2)

Coolselector®2 features unbiased calculations for the selection of refrigeration and air conditioning components based on the user’s requirements or based on standard operating conditions.