HAWK NVBR HT UNLOADER VALVE
Code: 1810

Product detailed description
The HAWK NVBR HT HIGH-TEMPERATURE UNLOADER VALVE – BRASS, 210 BAR, 25 L/MIN, UP TO 85 °C is a specially engineered by-pass valve designed for high-pressure systems operating with hot water. Manufactured by Hawk, a trusted brand in industrial cleaning components, this valve delivers excellent performance in environments requiring elevated thermal resistance and consistent pressure control.
Built to manage flow rates up to 25 litres per minute, pressures up to 210 bar, and continuous temperatures up to 85 °C, the NVBR HT is ideal for fixed installation cleaning systems in sectors such as the food industry, chemical processing, and pharmaceutical production, where hot water sanitation is essential.
Its brass valve body is fitted with high-temperature-resistant seals, ensuring long-term reliability and leak prevention even under extreme thermal loads. The valve also features dual by-pass outlets, offering enhanced installation flexibility and making it easy to integrate into complex high-temperature cleaning setups.
Key features:
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Designed for continuous high-temperature operation up to 85 °C
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Dual by-pass outlets for adaptable system design
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Brass construction for corrosion resistance and mechanical strength
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Manual pressure adjustment for precise system tuning
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Suitable for hot water wash systems in food processing, pharmaceutical environments, chemical industries, and sanitary maintenance
Whether used in automated wash stations, sanitizing equipment, or industrial hot water applications, the HAWK NVBR HT unloader valve delivers reliable performance where heat, pressure, and hygiene intersect.
Additional parameters
| Category: | Unloader valves |
|---|---|
| Max pressure (bar): | 210 |
| Max flow rate (l/min): | 25 |
| Body: | Brass |
| Max working temperature (°C): | 85 |
| Inlet: | G 3/8" F |
| Outlet: | G 3/8" M |
| By-pass: | 2 X G 3/8" F |
HAWK: high-pressure pump technology
HAWK specialises in high-pressure plunger pumps for professional cleaning and industrial water systems. Manufactured by Leuco in Italy, the brand covers a wide range of duties, from compact pressure washers to vehicle washing installations and demanding industrial cleaning equipment.
Product range and applications
The HAWK range includes pumps for pressure washing, car washes, municipal cleaning, misting and firefighting. Dedicated configurations also serve food processing, reverse osmosis and chemical applications. These uses require different materials and operating conditions, so suitability depends on the specific pump series.
- High-pressure pumps for professional pressure washers and industrial cleaning.
- Car wash configurations for self-service bays and automatic washing systems.
- Compact misting pumps and higher-flow pumps for mobile equipment.
- Accessories and service components for pump installation and maintenance.
Choosing a HAWK pump
Match flow rate, operating pressure, shaft arrangement and rotational speed to the drive and cleaning system. Inlet temperature, water quality and seal compatibility are equally important when selecting a replacement or designing a new installation.
Compare models in our HAWK high-pressure pumps category. For servicing, identify the complete model designation before selecting a repair kit.

