Danfoss NRV, NRVH Installation guide
Dan
20-62.12
Dan
20-65.11
Installation Guide
Check valve
Type NRV and NRVH
Refrigerants:
For a complete list of approved refrigerants, visit http://store.danfoss.com/ and search for individual code
numbers, where refrigerants are listed as part of product details.
020R9506
Note: -Flare/face seal connections are only approved for A1 and A2L refrigerants.
Applicable to A1, A2, A2L and A3 refrigerants as accepted by Danfoss, excluding R717 and to noncorrosive gases/liquids dependent on sealing material compatibility. The design pressure shall not be less
than the value outlined in section 9.2 of ANSI/ ASHRAE 15 for the refrigerant used in the system.
Valve type Connection type Media temperature range
NRV/NRVH 6s-19s Straight-way - solder -50 °C - 155 °C / -58 °F - 311 °F 49 bar/ 710 psig
NRV/NRVH 6-19 Straight-way - flare -50 °C -140 °C / -58 °F - 285 °F 46 bar/ 667 psig
NRV/NRVH 22s-35s Angle-way - solder -50 °C -140 °C / -58 °F - 285 °F 46 bar/ 667 psig
NRV/NRVH 22s E-35s E Angle-way - solder -50 °C -155 °C / -58 °F - 311 °F 49 bar/ 710 psig
NRV 10s H (CO2) Straight-way - solder -50 °C -155 °C / -58 °F - 311 °F 90 bar / 1305 psig
Position angleway Position straightway
NRV / NRVH
min. 90°
Max. working pressure
(PS/MWP)
020R9506
NRV / NRVH
© Danfoss | DCS (nb) | 2020.06
Danfoss
Danfoss
20-63.12
NRV / NRVH
foss
20-93.10
NRV / NRVH
foss
AN306539100226en-000201 | 1
foss
Danfoss
20-91.10
Min. 5% Ag
Max. 100 °C / 212 °F
Danfoss
Max. 100 °C / 212 °F
20-90.10
Min. 5% Ag
R64-3000.10
Danfoss
For NRV CO2 valve(90bar), when the NRV is used together with GBC in parallel as a pressure relief valve, it
is recommended to install the NRV above the GBC.
For the application use with R744 as part of a secondary loop or cascade system should refer to the
datasheet for more attentions.
© Danfoss | DCS (nb) | 2020.06
AN306539100226en-000201 | 2
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