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Datasheet generated 2026-10-07
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Danfoss NRVH 10S Check Valve 3/8 in ODF Solder Straightway 020B1036

Danfoss · HVAC & Refrigeration · Check Valves · Denmark · danfoss.com
Part Number
020B1036  ·  HS 8481.30
Danfoss NRVH 10S Check Valve 3/8 in ODF Solder Straightway 020B1036

Danfoss NRVH 10s piston-type check valve (non-return valve), OEM P/N 020B1036. Controls unidirectional refrigerant flow to prevent back-flow in commercial refrigeration and air-conditioning systems. NRVH is the stronger-spring variant of the NRV line, intended for systems with parallel-connected (power-pack) compressors where discharge-line pulsation is higher. Straightway pattern, Solder ODF connection 3/8 in (10 mm), inlet and outlet. Built-in damping piston. Max working pressure 49 bar (710 psig); media temperature -50 °C to 155 °C. Refrigerant compatibility is listed on the datasheet — verify against your system charge.

Technical Specifications

BrandDanfoss
Part number020B1036
ModelNRVH 10s piston-type check valve (non-return valve), stronger-spring NRVH variant
CategoryHVAC & Refrigeration — Check Valves
DirectionStraightway
ConnectionSolder, ODF, 3/8 in (10 mm), inlet and outlet
Max working pressure (PS/MWP)49 bar (710 psig)
Media temperature range-50 °C to 155 °C (-58 °F to 311 °F)
Kv1.56 m³/h (Cv 1.80 gal/min)
Min. opening pressure differential0.2 bar (2.9 psi)
Flowsingle flow, with built-in damping piston
Net weight0.053 kg
EAN5702428571661
MaterialsValve body brass; connection tube copper; built-in damping piston; stronger spring (NRVH) — full material breakdown in the NRV/NRVH datasheet
ApprovalsCE, UL (C UL US Listed), EAC, PED (Art. 4 par. 3)
RefrigerantsR134a, R22/R407C, R290, R32, R404A/R507, R407A, R407F, R407H, R410A, R448A, R449A, R449B, R450A, R452A, R452B, R454A, R454B, R454C, R455A, R513A, R515B, R516A, R600, R600a, R1233zd(E), R1234ze(E), R1234yf, R1270
TypeNRVH 10s
Product groupCheck valves
ApprovalC UL US LISTED
Body materialBrass
China RoHS complianceYes with exemptions
Connection Code(3001:X:10)
Connection materialCopper
Cv value [gal/min]1.8 gal/min
DesignPiston
EU RoHS complianceYes with exemptions
EU RoHS exemption clause6(c)
Flow directionSingle-flow
Flow direction indicatorOn product label
Fluid Group1
Identical product020B0132
Ignition source assessmentYes
Inlet connection typeSolder, ODF
Inlet size [mm]10 mm
Kv value [m³/h]1.56 m³/h
Lubricants compatibilityOilfree applications
Max. Working Pressure [bar]49 bar
Max. Working Pressure [psig]710 psig
Min. Pressure drop [bar]0.07 bar
Min. Pressure drop [psi]1 psi
MinODP [bar]0.2 bar
MinODP [psi]2.9 psi
Oil free refrigerantsR1234ze(E)
Outlet connection typeSolder, ODF
Outlet size [mm]10 mm
PED categoryArt. 4, par. 3
Rated cap cond, Hot gas [IMP]tcond=86 °F
Rated cap cond, Hot gas [SI]tcond=30 °C
Rated cap cond, Liq. cap [IMP]tcond=86 °F
Rated cap cond, Liq. cap [SI]tcond=30 °C
REACH Candidate List substancesLead (CAS no. 7439-92-1)
Temperature range [°C] [max]155 °C
Temperature range [°C] [min]-50 °C
Temperature range [°F] [max]311 °F
Temperature range [°F] [min]-58 °F
UL approval file nameREFRIGERANT VALVE 53R0
UL approved refrigerantsR1233zd(E)
UL markYes

Properties

MaterialValve body brass; connection tube copper; built-in damping piston; stronger spring (NRVH) — full material breakdown in the NRV/NRVH datasheet
Pressure rating49 bar (710 psig) max working pressure
Temperature range-50 °C to 155 °C
MOQ1

Compatibility

Install in the direction of the flow arrow. The differential pressure across the valve must exceed the minimum opening pressure differential, including at the lowest capacity of capacity-regulated compressors. Braze the ODF solder ends with care to protect the internal seals. Verify code, connection size and spring variant (NRV vs NRVH) before ordering.

Standards

Approvals

Attached Documents