Danfoss 020B1019 NRV 19S 3/4" ODF Straightway Solder Check Valve – 6.5 m³/h Kv, 49 bar

Danfoss NRV 19S (020B1019) is a straightway check valve with a 3/4 inch (19 mm) ODF solder connection. With a maximum working pressure of 49 bar and a Kv value of 6.5 m³/h, it provides safe and efficient one-way flow in medium-sized refrigeration and air conditioning systems. Its piston-type internal design offers high sealing performance and a long service life.

Technical Specifications

• Product Code: 020B1019
• Model: NRV 19S
• Connection Type: Solder (ODF)
• Connection Size: 3/4 inch (19 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)
• Max. Working Pressure: 49 bar (710 psi)
• Operating Temperature: -50 °C to +155 °C
• Body Material: Brass
• Connection Material: Copper
• 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, LLC CDC EURO-TYSK
• 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: 0.284 kg
• Net Weight: 0.27 kg
• Volume: 0.277 liters
• EAN: 5702428291255

Applications

Danfoss NRV 19S is preferred in commercial refrigeration, HVAC and industrial systems to prevent the backflow of liquid or gas. Thanks to its straightway design, it allows easy installation, increases system efficiency and offers high safety in long-term use.