Unloader valve for maximum pressure 390 bar and maximum flow rate 40 l/m VB 350 PN: 60.1700.50

VB350 Unloader Valve – Ultra High-Pressure Regulator

The VB350 unloader valve is a professional high-pressure regulating valve designed for demanding pressure washer applications operating at extremely high pressure levels.

When the spray gun closes, the valve automatically diverts water to bypass.
This eliminates pressure spikes, protects internal pump components, and ensures safe machine operation.

Built with solid brass construction, the valve is engineered for durability in continuous industrial use.

Main Features

• Ultra-high pressure capability

• Accurate pressure regulation

• Protects pump seals and pistons

• Prevents hose vibration and shock

• Heavy-duty brass body

• Suitable for hot water machines

• Long service life in harsh environments

Technical Specifications

How It Works

The valve monitors pressure inside the pump circuit.

Trigger released → bypass opens → pressure relieved

This prevents:

• Pump overheating

• Seal failure

• Pressure shock

• Equipment damage

Applications

• Ultra high pressure washers

• Industrial cleaning equipment

• Concrete and construction cleaning

• Heavy machinery maintenance

• Professional cleaning contractors

Why Choose VB350

Designed for very high-pressure machines where standard regulators fail.
It delivers reliable control, safety, and longer equipment life in extreme working conditions.