HAWK NVBR UNLOADER VALVE
Code: 1809

Product detailed description
The HAWK NVBR HIGH-PRESSURE UNLOADER VALVE – BRASS, 210 BAR, 25 L/MIN, DUAL INLETS & BYPASS OUTLETS is a versatile and durable by-pass valve designed for professional high-pressure washers and self-service car wash installations. Developed by Hawk, a recognized name in high-pressure technology, this valve is built for efficient pressure regulation and long-term performance in demanding industrial environments.
Capable of operating with flow rates up to 25 litres per minute and pressures up to 210 bar, the NVBR valve is well-suited for medium-duty cleaning systems across sectors such as automotive, municipal services, agriculture, and food industry sanitation.
Its brass body ensures corrosion resistance and mechanical durability, while the dual high-pressure inlets and two by-pass outlets offer outstanding installation flexibility, simplifying integration into various system configurations.
Key features:
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Two high-pressure inlets and two by-pass outlets for versatile mounting
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Manual adjustment knob for accurate pressure control
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Ideal for plunger pump systems and fixed installation washers
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Compatible with self-service wash bays, light industrial cleaning setups, and portable cleaning units
Whether you’re configuring a custom pressure washing system or maintaining an automated cleaning station, the Hawk NVBR unloader valve delivers the control, reliability, and flexibility needed for efficient high-pressure operation.
Additional parameters
| Category: | Unloader valves |
|---|---|
| Max pressure (bar): | 210 |
| Max flow rate (l/min): | 25 |
| Body: | Brass |
| Inlet: | 2 X 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.

