Product Overview

The Annovi Reverberi Gymatic 3B Unloader Valve with Chemical Injector is a pressure-regulating unloader valve and control set designed for compatible Annovi Reverberi XMT and RR pumps.

When the pressure washer trigger gun is released, the Gymatic 3B automatically diverts the water through its built-in bypass and reduces the pressure at the pump to zero. The line pressure remains trapped inside the high-pressure hose until the trigger gun is reopened.

This trapped-pressure operation helps protect the pump from working against a closed outlet while allowing the pressure washer to return to its normal operating pressure when the trigger is pulled.

The valve also incorporates an adjustable chemical injector, allowing cleaning detergent to be introduced into a compatible pressure washer system. Chemical induction normally operates at low pressure and requires a suitable detergent nozzle or low-pressure lance setting.

Rated for a maximum pressure of 250 Bar / 3,625 PSI and a maximum water flow of 11 LPM, the valve features a 1/2″ male inlet and 3/8″ male outlet.

Key Features

• Compatible with Annovi Reverberi XMT and RR pumps
• Pressure-regulating unloader valve and control set
• Trapped-pressure operation
• Automatically activates bypass when the trigger is released
• Reduces pump pressure to zero during bypass
• Retains line pressure inside the high-pressure hose
• Built-in bypass
• Integrated adjustable chemical injector
• Maximum pressure of 250 Bar / 3,625 PSI
• Maximum water flow of 11 LPM
• 1/2″ male inlet
• 3/8″ male outlet
• Suitable for pressure washer repairs and replacement installations

Pump Compatibility

Chemical Injector Information

The built-in adjustable chemical injector is intended for low-pressure detergent application. Chemical performance can be affected by the nozzle, hose length, detergent viscosity and pressure washer operating conditions.

Flush the chemical injector with clean water after using detergent to help prevent chemical residue and blockages.

Important Ordering Information

This unloader valve is suitable for compatible Annovi Reverberi XMT and RR pumps. Check the complete pump model, connection sizes and existing unloader arrangement before ordering.

If you are unsure about compatibility, please contact us with your pump model, pressure washer details or a clear photograph of the existing valve.

Bulk purchase discounts are available on request.

Contact Flowjet Cleaning Equipment

For compatibility advice or assistance selecting the correct pressure washer component, please contact:

Flowjet Cleaning Equipment LTD
Unit 4, Gatebeck Farm
Gatebeck, Kendal
LA8 0HW
United Kingdom

Telephone: 015395 66193
Website: www.flowjet.co.uk