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Danfoss NRVH 16S Check Valve 3/4 in (19 mm) ODF Straightway

Danfoss · HVAC & Refrigeration · Check Valves · Denmark · danfoss.com
Part Number
020B1071  ·  HS 8481.30
Danfoss NRVH 16S Check Valve 3/4 in (19 mm) ODF Straightway

Danfoss NRVH 16s piston-type check valve (non-return valve), OEM P/N 020B1071. 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 (0.2 bar / 2.9 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. Straightway pattern, Solder, ODF connection 3/4 in (19 mm), inlet and outlet. Built-in damping piston. Max working pressure 49 bar (710 psig); media temperature -50 to 155 °C (-58 to 311 °F). Kv 4 m³/h (Cv 4.62 gal/min). 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: 020B1071 Model: NRVH 16s piston-type check valve (non-return valve) Category: HVAC & Refrigeration — Check Valves Direction: Straightway Connection: Solder, ODF, 3/4 in (19 mm), inlet and outlet Max working pressure (PS/MWP): 49 bar (710 psig) Media temperature range: -50 to 155 °C (-58 to 311 °F) Min. opening pressure differential: 0.2 bar (2.9 psi) Kv: 4 m³/h (Cv 4.62 gal/min) Flow: single flow, with built-in damping piston Net weight: 0.17 kg (gross 0.184 kg) EAN: 5702428572125 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/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 16s Product group: Check valves Approval: C UL US LISTED Body material: Brass China RoHS compliance: Yes with exemptions Connection Code: (3002:X:19) Connection material: Copper Connection notes: Oversize Cv value [gal/min]: 4.67 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 Ignition source assessment: Yes Inlet connection type: Solder, ODF Inlet size [in]: 3/4 in Inlet size [mm]: 19 mm Kv value [m³/h]: 4.04 m³/h Lubricants compatibility: Oilfree applications Max. Working Pressure [bar]: 49 bar Max. Working Pressure [psig]: 710 psig Min. Pressure drop [bar]: 0.3 bar Min. Pressure drop [psi]: 4.3 psi MinODP [bar]: 0.2 bar MinODP [psi]: 2.9 psi Oil free refrigerants: R1234ze(E) Outlet connection type: Solder, ODF Outlet size [in]: 3/4 in Outlet size [mm]: 19 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]: 155 °C Temperature range [°C] [min]: -50 °C Temperature range [°F] [max]: 311 °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 rating49 bar (710 psig) max working pressure
Temperature range-50 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 (0.2 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