VRT100 Green Spring Unloader - 1/2" YU21405

The YU21405 Green Spring Unloader is a high-capacity, professional-grade pressure washer unloader engineered to regulate system pressure on commercial and industrial washing equipment. Built to withstand demanding operation, this unloader supports pressures up to 4500 PSI and flows up to 21 GPM, making it ideal for large rigs, multi-gun setups, and high-output pump systems.

Designed with a green-rated spring, the YU21405 ensures smooth pressure modulation, consistent bypass operation, and pump protection under heavy workloads. This is a trusted replacement part for contractors who need maximum reliability and performance.

Product Features & Details

• Model: YU21405

• Spring Type: Green spring

• Max Pressure: 4500 PSI

• Max Flow: 21 GPM

• Application: Industrial and commercial pressure washer systems

• Function: Controls system operating pressure and manages bypass flow

• Construction: Heavy-duty corrosion-resistant body

• Compatibility: Ideal for large pumps and multi-gun washing setups

• Use Case: Replacement, repair, and system performance optimization

Benefits

• Provides stable pressure regulation for high-output systems

• Protects pump from over-pressurization

• Supports extreme flow rates up to 21 GPM

• Reduces wear and extends overall pump lifespan

• Easy to install and service on most pro-grade rigs

Specifications