Danfoss 020-1021 NRV 28S 1 1/8" ODF Angleway Solder Check Valve – 16.5 m³/h Kv, 46 bar

Danfoss NRV 28S (020-1021) is a check valve designed with an angleway configuration and a 1 1/8 inch (ODF) solder connection. Providing one-way flow control, this valve is equipped with a high-safety piston-type internal design and withstands pressures up to 46 bar. With its angle form, which allows easy installation in compact systems, it delivers high performance in refrigeration applications.

Technical Specifications

• Product Code: 020-1021
• Model: NRV 28S
• Connection Type: Solder (ODF)
• Connection Size: 1 1/8 inch (28 mm)
• Design: Angleway
• Flow Direction: One-way (single-flow)
• Kv Value: 16.5 m³/h
• Cv Value: 19.07 gal/min
• Min. Pressure Drop: 0.04 bar (0.6 psi)
• Max. Working Pressure: 46 bar (667 psi)
• Operating Temperature Range: -50 °C to +140 °C
• Flow Indicator: Embossed direction arrow
• Body Material: Brass
• Connection Material: Copper
• Oil-Free Refrigerant Compatibility: Suitable

Compatible Refrigerants

• R1233zd(E), R1234yf, R1234ze(E), R1270, R134a, R170, R22, R290, R32
• R404A, R407A/C/F/H, R410A, R448A, R449A/B, R450A, R452A/B
• R454A/B/C, R455A, R463A, R507A, R513A, R515B, R516A, R600, R600a

Certificates and Compliance

• Approvals: CE, UL (C UL US LISTED), EAC
• PED Category: Article 4, Paragraph 3
• RoHS Compliance: EU and China RoHS (with exemptions)
• SCIP Dossier No: b3a34751-5701-488e-98f4-24be945efdc1

Physical Properties

• Gross Weight: 1.388 kg
• Net Weight: 1.258 kg
• Volume: 3.444 liters
• EAN: 5702422034643

Applications

The NRV 28S angleway check valve offers a safe solution for preventing the backflow of liquid and gas in medium and large commercial refrigeration systems. Thanks to its angled connection, it provides an installation advantage in tight spaces. With its piston design, its sealing performance is high and it offers long-lasting use.