NRV refrigeration check valves

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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)


Type Name Language Valid for Updated Download File type
Data sheet Check valve Types NRV and NRVH Version 2 English Multiple 03 Dec, 2019 3.0 MB .pdf
Installation guide NRV / NRVH check valves English Multiple 10 Mar, 2016 166.0 KB .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


Coolselector®2 app icon

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.