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Danfoss NRV 12 Check Valve 1/2 in Face Seal Straightway

Danfoss · HVAC & Refrigeration · Check Valves · Denmark · danfoss.com
Part Number
020-1118  ·  HS 8481.30
Danfoss NRV 12 Check Valve 1/2 in Face Seal Straightway

Danfoss NRV 12 piston-type check valve (non-return valve), OEM P/N 020-1118. Controls unidirectional refrigerant flow to prevent back-flow in commercial refrigeration and air-conditioning systems. The NRV opens at a low minimum pressure differential (0.05 bar / 0.72 psi). Straightway pattern, Face seal (metal gasket) connection 1/2 in face seal, 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 2.37 m³/h (Cv 2.74 gal/min). Face-seal (metal-gasket) connections are approved for A1 and A2L refrigerants only. 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: 020-1118 Model: NRV 12 piston-type check valve (non-return valve) Category: HVAC & Refrigeration — Check Valves Direction: Straightway Connection: Face seal (metal gasket), 1/2 in face seal, 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: 0.05 bar (0.72 psi) Kv: 2.37 m³/h (Cv 2.74 gal/min) Flow: single flow, with built-in damping piston Net weight: 0.12 kg (gross 0.121 kg) EAN: 5702428246637 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, R32, R404A/R507A, R407A, R407F, R407H, R410A, R448A, R449A, R449B, R450A, R452A, R452B, R454A, R454B, R454C, R455A, R513A, R515B, R516A, R1233zd(E), R1234ze(E)
R1234yf TypeNRV 12 Product group: Check valves Approval: C UL US LISTED Body material: Brass China RoHS compliance: Yes with exemptions Connection material: Brass Cv value [gal/min]: 2.37 gal/min Design: Piston EU RoHS compliance: Yes with exemptions EU RoHS exemption clause: 6(c) Flow direction: Single-flow Flow direction indicator: On product label Fluid Group: 1 Inlet connection type: Face Seal Inlet Internal/External: External Inlet size [in]: 1/2 in Kv value [m³/h]: 2.05 m³/h Lubricants compatibility: Oilfree applications Max. Working Pressure [bar]: 46 bar Max. Working Pressure [psig]: 667 psig Min. Pressure drop [bar]: 0.05 bar Min. Pressure drop [psi]: 0.7 psi Oil free refrigerants: R1234ze(E) Outlet connection type: Face Seal Outlet Internal/External: External Outlet size [in]: 1/2 in 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 (0.05 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