Unloader valve for maximum pressure 210 bar and maximum flow rate 25 l/m VBT for NHDP pump PN: 1.099-396.0

HAWK VBT Unloader Valve – Pressure Regulator for NHDP Pumps

The HAWK VBT unloader valve is a head-mounted pressure regulating valve designed for professional pressure washer systems using HAWK NHDP pump series.
It automatically diverts water flow to bypass when the trigger gun is closed, preventing pressure spikes and protecting pump components.

Built for durability and precision control, this valve ensures stable operating pressure, safer operation, and longer pump lifespan in continuous-duty applications.

Main Features

• Head-mounted bypass design

• Accurate pressure adjustment

• Protects pump seals and pistons

• Smooth pressure release

• Reliable continuous operation

• Heavy-duty brass construction

• Designed for professional machines

Technical Specifications

Compatible Pump Series

• NHDP 120

• NHDP 150

• NHDP 200

• NHDP-C versions

• NHDP-G

• NHDP-NEMA

• Car wash systems using NHDP pumps

How It Works

When the spray gun closes, the valve redirects water internally instead of forcing pressure back into the pump.
This prevents:

• Pressure shock

• Overheating

• Seal damage

• Motor overload

The result is smoother operation and extended equipment life.

Applications

• Car wash machines

• Industrial pressure washers

• Workshop cleaning systems

• Equipment washing stations

• Continuous duty washing systems

Why Choose HAWK VBT

Using the correct unloader valve is essential for pump safety.
The VBT is specifically engineered for NHDP pumps, ensuring perfect compatibility, stable pressure control, and reliable performance in demanding environments.