Product detailed description
The HAWK NVBXL UNLOADER VALVE 210 BAR – HIGH-FLOW BYPASS VALVE FOR URBAN AND INDUSTRIAL CLEANING is a versatile and efficient unloader valve engineered for medium-pressure cleaning systems that require high water flow rates. Designed by HAWK, this valve operates at pressures up to 210 bar and handles flow rates up to 50 litres per minute, making it a reliable component for a wide range of professional cleaning and utility applications.
Its performance profile makes the NVBXL particularly well-suited for car wash gantries, high-pressure fire-fighting setups, and compact to mid-sized urban cleaning and sewer jetting vehicles. Whether deployed in municipal maintenance, transport fleet washing, or emergency response vehicles, the NVBXL provides stable pressure relief and system protection.
This unloader valve works by diverting excess pressure through a bypass mechanism, safeguarding pumps and hydraulic systems from overpressure damage. Its robust design ensures long-term reliability and efficient flow management in both mobile and fixed cleaning systems.
Ideal for operators requiring high-volume water flow with consistent pressure control, the HAWK NVBXL unloader valve is a dependable solution for modern cleaning systems used across urban sanitation, vehicle maintenance, and light industrial fire-fighting applications.
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.
