Danfoss 020B1054 NRV 19S 7/8" ODF Straightway Solder Check Valve – 6.5 m³/h Kv, 49 bar

Danfoss NRV 19S (020B1054) is a high-quality straightway check valve with a 7/8 inch (22 mm) ODF solder connection. With a maximum working pressure of 49 bar and a Kv value of 6.5 m³/h, it provides one-way flow control in medium and large refrigeration systems. With its high temperature resistance and piston-type internal design, it offers tight sealing and long-lasting use.

Technical Specifications

• Product Code: 020B1054
• Model: NRV 19S
• Connection Type: Solder (ODF)
• Connection Size: 7/8 inch (22 mm)
• Design: Straightway
• Flow Direction: One-way
• Kv Value: 6.5 m³/h
• Cv Value: 7.51 gal/min
• Min. Pressure Drop: 0.05 bar (0.7 psi)
• Min. Opening Differential Pressure (ODP): 0.02 bar (0.29 psi)
• Max. Working Pressure: 49 bar (710 psi)
• Operating Temperature: -50 °C to +155 °C
• Body Material: Brass
• Connection Material: Copper
• Connection Note: Oversize
• Flow Indicator: On the product label
• 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, 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 exemption)
• SCIP Dossier No: 518b3853-2efc-40fc-8f8b-d06930d032bb

Physical Properties

• Gross Weight: 0.292 kg
• Net Weight: 0.276 kg
• Volume: 0.277 liters
• EAN: 5702428572187

Applications

NRV 19S (020B1054) is designed especially for use in refrigeration and HVAC systems where backflow must be prevented. With its straightway design and high pressure resistance, it can be used safely in a wide range of applications. It provides ease of service and system safety.