![020B1054 - Check valve, NRV 19s, Max. Working Pressure [bar]: 49.0 NRV 19s Check Valve | 7/8 in (22 mm) ODF Solder | 49 bar](https://haste-uae.com/wp-content/uploads/2026/02/Untitled-design-16.png)
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![020B1058 - Check valve, NRV 10s, Max. Working Pressure [bar]: 49.0 Danfoss](https://haste-uae.com/wp-content/uploads/2026/02/Untitled-design-14-1-400x400.png)
Product details
Danfoss NRV 19s Check Valve | 7/8 in (22 mm) ODF Solder | 49 bar
Product Description:
The Danfoss NRV 19s (020B1054) is a heavy-duty check valve designed for the most demanding HVAC/R applications across the UAE. Functioning as a one-way guard, it prevents the back-condensation of refrigerant during off-cycles, which is vital for maintaining system pressure and protecting compressors in the intense heat of Dubai. This model features 7/8 in (22 mm) ODF solder connections, providing a robust, permanent brazed joint that can withstand the high vibrations and thermal expansion typical of UAE industrial installations. With a maximum working pressure of 49 bar, it is fully optimized for high-pressure refrigerants like R410A and R32, offering a low pressure drop and long service life in the Middle Eastern climate.
Key Features & Benefits:
- Reliable Back-flow Prevention: Eliminates the risk of refrigerant siphoning, ensuring stable system performance in UAE commercial units.
- Superior Pressure Rating: 49-bar capacity makes it the safest choice for modern, high-pressure refrigeration projects in Dubai.
- Large Capacity Flow: 7/8 inch ODF connectors allow for high volume flow with minimal resistance, boosting UAE energy efficiency.
- Built for Industrial Stress: Engineered to handle the mechanical stresses and high ambient temperatures found in UAE plant rooms.
- Quiet & Stable Operation: Designed to minimize pulsation and noise, making it suitable for noise-sensitive UAE installations like hotels or hospitals.
Technical Specifications :
| Specifications | Value |
| Manufacturer | Danfoss |
| Product Model | NRV 19s |
| Code Number | 020B1054 |
| Connection Size | 7/8 in (22 mm) ODF Solder |
| Max. Working Pressure | 49.0 bar (711 psig) |
| Opening Differential Pressure | 0.05 bar (Min. $\Delta p$) |
| Temperature Range | -50°C to +140°C |
| Kv Value | 5.0 $m^3/h$ |
FAQs:
- Q: Why use the 7/8″ NRV 19s (020B1054) in UAE systems
- A: It provides a larger connection size for higher-capacity lines, ensuring the system can handle the mass flow required for large UAE chillers.
- Q: Is it suitable for hot gas defrost lines in Dubai?
- A: Yes, with a temperature rating up to +140°C, it is perfectly suited for hot gas lines and discharge applications in the UAE.
- Q: How does the 49-bar rating benefit UAE contractors?
- A: It offers future-proofing and a high safety margin for all current high-pressure HFC and HFO refrigerants used in the UAE.
