Optimized for use in liquid, suction and hot gas lines
The Danfoss NRV, NRVH and NRVT 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 and the NRVT is designed for transcritical CO2 systems.
Features and benefits
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The valves can be used for fluorinated refrigerants as well as CO2
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Straightway and angleway versions are available
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Supplied with flare and solder connections
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Available with oversize connections for easy installation
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NRVH is supplied with spring to Δp = 0.3 bar (4 psi)
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NRVT is designed for a max. working pressure 140 bar / 2031 psig
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Documents
| Type | Name | Language | Valid for | Updated | Download | File type |
|---|---|---|---|---|---|---|
| Brochure | A complete portfolio of CO₂ refrigeration solutions | Polish | Poland | 27 Jun, 2023 | 16.7 MB | |
| Installation guide | Check valve type NRVT | English | Multiple | 24 Feb, 2022 | 89.2 KB | |
| Data sheet | Check valve type NRVT | English | Multiple | 16 Sep, 2025 | 1.6 MB | |
| Data sheet | Check valve, type NRV and NRVH | Ukrainian | Ukraine | 11 Jul, 2023 | 6.1 MB | |
| Brochure | Discover the opportunities of CO2 refrigeration | English | Multiple | 24 Nov, 2025 | 35.1 MB | |
| Data sheet | NRV check valve CO2 | English | Multiple | 16 Sep, 2025 | 1.0 MB | |
| Brochure | Save energy and protect the environment with CO2 solutions | Italian | Italy | 12 Dec, 2023 | 16.5 MB | |
| Brochure | Save energy and protect the environment with CO2 solutions | Spanish, Castilian | Spain | 09 Jan, 2024 | 25.4 MB | |
| Brochure | Save energy and protect the environment with CO2 solutions - Special version for Food Retail | French | France | 17 Mar, 2026 | 17.1 MB | |
| Brochure | Save energy and protect the environment with CO2 solutions - Special version for Food Retail | Ukrainian | Ukraine | 20 Jun, 2023 | 14.6 MB | |
| Brochure | Save energy and protect the environment with CO2 solutions - Special version for Food Retail | German | Multiple | 14 Jun, 2023 | 11.7 MB | |
| Brochure | Save energy and protect the environment with CO2 solutions - Special version for Food Retail | French | Multiple | 02 Jul, 2018 | 3.4 MB | |
| Data sheet | Обратный клапан, Клапаны типа NRV и NRVH, версия 2 | Russian | Multiple | 24 May, 2020 | 2.9 MB |
Software
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.
Coolselector®2
