VB350 Unloader
Heavy-Duty Adjustable Unloader Valve for Industrial Pump Protection
The VB350 Unloader with Knob is a high-performance pressure regulating valve engineered for heavy-duty industrial pumps and high-pressure cleaning systems. Built with a durable brass body and rated up to 350 bar (5100 psi), this unloader delivers stable pressure control, reliable system protection, and smooth operation in demanding work environments.
Featuring an adjustable control knob, the VB350 allows operators to fine-tune pressure quickly and safely. Its robust construction, high permissible pressure rating, and efficient bypass function make it ideal for commercial cleaning equipment, jetting systems, hydro-excavation units, and industrial water pumps.
Designed for long service life, consistent performance, and compatibility with Australian industrial setups, the VB350 ensures your pump runs safely, efficiently, and without pressure spikes.
Applications & Uses
Suitable for a wide range of industrial and commercial operations:
High-pressure water jetting systems
Commercial pressure washers
Hydro excavation and NDD equipment
Industrial and municipal cleaning setups
Pump protection & bypass regulation
Sewer and drain jetting equipment
Construction, agricultural & environmental services
Any high-pressure pump requiring adjustable regulation
Key Features
Adjustable knob for precise pressure control
Rated to 350 bar (5100 psi) for high-pressure applications
Brass construction for strength, corrosion resistance, and durability
Smooth bypass function to protect pumps and maintain stable pressure
Compatible with standard BSP threaded systems
Built for professional industrial environments
Technical Specifications
Rated Pressure: 350 bar / 35 MPa / 5100 psi
Permissible Pressure: 390 bar / 39 MPa / 5650 psi
Rated Flow Rate: 40 L/min / 10.5 USGpm
Rated Temperature: 90 °C / 195 °F
Material: Brass
Inlet: 3/8" BSP Male
Outlet: 3/8" BSP Female
Bypass: 1/2" BSP Female
Weight: 920 g