cBallast
Industrial Parts Catalog
Datasheet generated 2026-10-08
sales@cballast.com
cballast.com

Danfoss NRD 6S differential pressure valve — 1/4 in ODF solder, 1.4 bar opening, 49 bar, code

Danfoss · HVAC & Refrigeration · Check Valves · Denmark · danfoss.com
Part Number
020B1200  ·  HS 8481.30
Danfoss NRD 6S differential pressure valve — 1/4 in ODF solder, 1.4 bar opening, 49 bar, code

Danfoss NRD 6s differential (opening) pressure valve, code 020B1200 — a spring-loaded non-return valve with a defined 1.4 bar opening pressure from the Danfoss NRD range for commercial A/C and refrigeration. The NRD is fitted together with a condensing pressure controller (KVR) and/or a receiver pressure controller (KVD): it holds a minimum pressure difference of about 1.4 bar across the KVR so that condensing-pressure control remains effective at low ambient temperature, while also acting as a check valve that prevents reverse (backward) flow. This SKU has 1/4 in ODF solder (inlet and outlet) connections; 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

TypeDifferential pressure valve
NRD 6s Code number020B1200 Series: Danfoss NRD differential (opening) pressure valve Function: Maintains ~1.4 bar minimum pressure difference for KVR/KVD condensing-pressure control; also acts as a check (non-return) valve Direction: Straightway Connection: 1/4 in ODF solder, inlet and outlet Connection type: Solder, ODF Min. opening (differential) pressure: 1.4 bar (20.3 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, UL file "Refrigerant valve 53R0")
EAC Net weight0.085 kg Gross weight: 0.097 kg EAN: 5702428572019 Product group: Check valves Approval: LLC CDC EURO-TYSK Body material: Brass China RoHS compliance: Yes with exemptions Connection material: Copper Cv value [gal/min]: 2.8 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]: 1/4 in Kv value [m³/h]: 2.42 m³/h Lubricants compatibility: Oilfree applications Max. Working Pressure [bar]: 49 bar Max. Working Pressure [psig]: 710 psig Min. Pressure drop [bar]: 1.4 bar Min. Pressure drop [psi]: 20.3 psi MinODP [bar]: 1.4 bar MinODP [psi]: 20.3 psi Oil free refrigerants: R1234ze(E) Outlet connection type: Solder, ODF Outlet size [in]: 1/4 in PED category: Art. 4, par. 3 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)

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 standardNRD 6s
Standard size6s (1/4 in)
MOQ1

Compatibility

The NRD is selected by body size (NRD 6s / 12s / 19s) and connection. NRD 6s is the smallest size, 1/4 in ODF solder. Installed with a Danfoss KVR/KVD for condensing-pressure control at low ambient.

Approvals

Attached Documents