HAWK VBT UNLOADER VALVE
Code: 1785/FOG

Product detailed description
The VBT High Pressure Unloader Valve – 275 Bar is a compact, high-efficiency brass by-pass valve engineered for demanding industrial and commercial high-pressure cleaning systems. With a maximum working pressure of 275 bar and a flow rate capacity of 25 litres per minute, this valve ensures precise pressure control and reliable performance in high-demand environments.
Equipped with an integrated banjo connection, the VBT valve is designed for direct installation on the pump manifold, reducing the need for additional fittings and simplifying system configuration. Its compact design allows easy integration into tight equipment layouts, while the robust brass body guarantees long-term durability and corrosion resistance in tough industrial conditions.
This high-pressure unloader valve is particularly well-suited for use with plunger pumps in professional high-pressure cleaners, especially in industries such as automotive cleaning, food industry sanitation, municipal and agricultural maintenance, and drain and sewer cleaning. The integrated by-pass system protects the pump by diverting excess flow when the system is not actively spraying, improving system longevity and safety.
The HAWK VBT unloader valve combines pressure reliability, space-saving installation, and heavy-duty performance—ideal for OEM applications, maintenance professionals, and industrial equipment operators who require consistent, controlled pressure output in compact form.
| Max Pressure (bar) | Inlet | Outlet | Pump Compatibility |
|---|---|---|---|
| 210 | G 1/2" F | G 3/8" M | NHD |
| 210 | G 1/2" F | G 3/8" M | NMT |
| 275 | G 1/2" F | G 3/8" M | NPM |
| 100 | G 1/2" F | G 3/8" M | FOG |
Additional parameters
| Category: | Unloader valves |
|---|---|
| Max pressure (bar): | 275 |
| Max flow rate (l/min): | 25 |
| Body: | Brass |
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.

