The Danfoss 020-1042 is a 1/2″ flare NRV 12 non-return (check) valve engineered for refrigeration and air conditioning systems where reliable prevention of reverse refrigerant flow is critical. Designed and manufactured by Danfoss — a global leader in refrigeration controls and components — this check valve delivers consistent, dependable performance in demanding HVAC/R applications.
Product Overview
The NRV 12 series check valve allows refrigerant to flow freely in one direction while automatically blocking reverse flow, protecting compressors and other system components from damage caused by refrigerant migration or backflow. The 1/2″ flare connection ensures straightforward installation and a leak-free seal compatible with standard refrigeration copper tubing.
Key Features
- Non-return (check) valve design prevents reverse refrigerant flow
- 1/2″ flare connection for easy, tool-friendly installation
- NRV 12 series — compact and suitable for a wide range of refrigerants
- Durable construction built to Danfoss quality standards
- Protects compressors and system components from refrigerant backflow and migration
- Low pressure drop for efficient system operation
- Compatible with common HFC, HCFC, and HFO refrigerants
Typical Applications
- Commercial and residential refrigeration systems
- Air conditioning and heat pump circuits
- Liquid and suction line installations requiring backflow prevention
- Multi-compressor and parallel refrigeration systems
Why Choose Danfoss NRV Check Valves?
Danfoss NRV check valves are trusted by HVAC/R professionals worldwide for their precision engineering, low pressure drop characteristics, and long service life. The flare-end configuration eliminates the need for brazing in many installations, saving time and reducing the risk of heat damage to nearby components.
Specifications
- Brand: Danfoss
- SKU / Part Number: 020-1042
- Series: NRV 12
- Connection Type: 1/2″ Flare
- Valve Type: Non-Return (Check) Valve
