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Datasheet generated 2026-10-08
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Danfoss NRVH 22S Check Valve 28 mm ODF Angleway

Danfoss · HVAC & Refrigeration · Check Valves · Denmark · danfoss.com
Part Number
020-1067  ·  HS 8481.30
Danfoss NRVH 22S Check Valve 28 mm ODF Angleway

Danfoss NRVH 22s piston-type check valve (non-return valve), OEM P/N 020-1067. 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, with a higher minimum opening pressure differential (0.3 bar / 4.35 psi) than the standard NRV (about 0.02–0.04 bar); it is intended for systems with parallel-connected (power-pack) compressors where discharge-line pulsation is higher. Angleway pattern, Solder, ODF connection 28 mm, inlet and outlet. Built-in damping piston. Max working pressure 46 bar (667 psig); media temperature -50 to 140 °C (-58 to 285 °F). Kv per the NRV/NRVH datasheet. UL (C UL US Listed) and EAC. Refrigerant compatibility per the NRV/NRVH datasheet — verify against your system charge. Price on quote.

Technical Specifications

BrandDanfoss Part number: 020-1067 Model: NRVH 22s piston-type check valve (non-return valve) Category: HVAC & Refrigeration — Check Valves Direction: Angleway Connection: Solder, ODF, 28 mm, inlet and outlet Max working pressure (PS/MWP): 46 bar (667 psig) Media temperature range: -50 to 140 °C (-58 to 285 °F) Min. opening pressure differential: 0.3 bar (4.35 psi) Kv: per NRV/NRVH datasheet Flow: single flow, with built-in damping piston Net weight: 0.542 kg (gross 0.612 kg) EAN: 5702422116059 Materials: Connection tube copper; solder ring brass; sealing disk brass; piston stainless steel; spring brass; valve body brass; guide brass; washer PTFE with glass fibre Approvals: UL
EAC RefrigerantsR134a, R22/R407C, R290, R32, R404A/R507A, 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 22s Product group: Check valves Approval: C UL US LISTED Body material: Brass China RoHS compliance: Yes with exemptions Connection Code: (3001:X:28) Connection material: Copper Connection notes: Oversize Cv value [gal/min]: 9.83 gal/min Design: Piston EU RoHS compliance: Yes with exemptions EU RoHS exemption clause: 6(c) Flow direction: Single-flow Flow direction indicator: Embossed 1-way arrow Fluid Group: 1 Inlet connection type: Solder, ODF Inlet size [mm]: 28 mm Kv value [m³/h]: 8.5 m³/h Lubricants compatibility: Oilfree applications Max. Working Pressure [bar]: 46 bar Max. Working Pressure [psig]: 667 psig Min. Pressure drop [bar]: 0.3 bar Min. Pressure drop [psi]: 4.3 psi Oil free refrigerants: R1234ze(E) Outlet connection type: Solder, ODF Outlet size [mm]: 28 mm PED category: Art. 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 substances: Lead (CAS no. 7439-92-1) Temperature range [°C] [max]: 140 °C Temperature range [°C] [min]: -50 °C Temperature range [°F] [max]: 285 °F Temperature range [°F] [min]: -58 °F UL approval file name: REFRIGERANT VALVE 53R0 UL approved refrigerants: R1233zd(E) UL mark: Yes

Properties

MaterialConnection tube copper; solder ring brass; sealing disk brass; piston stainless steel; spring brass; valve body brass; guide brass; washer PTFE with glass fibre
Pressure rating46 bar (667 psig) max working pressure
Temperature range-50 to 140 °C
MOQ1

Compatibility

Install in the direction of the flow arrow. The differential pressure across the valve must exceed the minimum opening pressure differential (0.3 bar), 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