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Datasheet generated 2026-10-08
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Danfoss NRV 19S check valve — 7/8 in ODF solder, angleway, 49 bar, code

Danfoss · HVAC & Refrigeration · Check Valves · Denmark · danfoss.com
Part Number
020B1246  ·  HS 8481.30
Danfoss NRV 19S check valve — 7/8 in ODF solder, angleway, 49 bar, code

Danfoss NRV 19s check (non-return) valve, code 020B1246 — a spring-loaded angleway check valve from the Danfoss NRV range for commercial A/C and refrigeration, preventing reverse refrigerant flow while turning the line through 90 degrees. This SKU has 7/8 in ODF (female) solder connections in an angleway (right-angle) body. minimum pressure drop 0.02 bar; maximum working pressure 49 bar (710 psig); media temperature range -50 to 155 C (-58 to 311 F). Suitable for HCFC/HFC/HFO and hydrocarbon refrigerants. UL listed (C UL US) and EAC. Price on quote.

Technical Specifications

TypeCheck valve
NRV 19s Code number020B1246 Series: Danfoss NRV spring-loaded check (non-return) valve Function: Prevents reverse flow; right-angle (angleway) body Direction: Angleway Connection: 7/8 in ODF solder, inlet and outlet Connection type: Solder
ODF Min. pressure drop0.02 bar (0.29 psi) Max. working pressure: 49 bar (710 psig) Media temperature range: -50 to 155 C (-58 to 311 F) Applicable refrigerants: R1233zd(E), R1234yf, R1234ze(E), R1270, R134a, R170, R22, R290, R32, R404A, R407A, R407C, R407F, R407H, R410A, R448A, R449A, R449B, R450A, R452A, R452B, R454A, R454B, R454C, R455A, R507A, R513A, R515B, R516A, R600
R600a Conformity assessmentPED category Art. 4, par. 3 (sound engineering practice) Approvals: UL (C UL US Listed)
EAC Net weight0.261 kg Gross weight: 0.291 kg EAN: 5715162716342 Product group: Check valves Approval: C UL US LISTED Body material: Brass China RoHS compliance: Yes with exemptions Connection material: Copper Cv value [gal/min]: 7.51 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]: 7/8 in Kv value [m³/h]: 6.5 m³/h Lubricants compatibility: Oilfree applications Max. Working Pressure [bar]: 49 bar Max. Working Pressure [psig]: 710 psig Min. Pressure drop [bar]: 0.02 bar Min. Pressure drop [psi]: 0.29 psi Oil free refrigerants: R1234ze(E) Outlet connection type: Solder, ODF Outlet size [in]: 7/8 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) Refrigerants: R1233zd(E) 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 stainless steel; guide brass; PTFE/glass-fibre washer
Pressure rating49 bar (710 psig) max working pressure
Temperature range-50 to 155 C (-58 to 311 F)
Primary standardNRV 19s
Standard size19s (7/8 in)
MOQ1

Compatibility

Angleway (right-angle) NRV 19s, distinct from the straightway NRV 19s (020B1054, 7/8 in ODF). Select by size, connection and straightway vs angleway body.

Approvals

Attached Documents