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 RK and HRK pressure washer pumps.

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

When the trigger gun is reopened, the valve redirects the water through the outlet and allows the pressure washer to return to its normal operating pressure.

The unloader also incorporates a built-in adjustable chemical injector for introducing cleaning detergent into a compatible pressure washer system.

Rated for a maximum pressure of 250 Bar / 3,625 PSI and a maximum water flow of 21 LPM, the valve features a 1/2″ male inlet and a 3/8″ male outlet.

Key Features

• Pressure-regulating unloader valve and control set
• Suitable for compatible Annovi Reverberi RK and HRK pumps
• Maximum water flow of 21 LPM
• Maximum pressure of 250 Bar / 3,625 PSI
• Trapped-pressure unloader operation
• Reduces pump pressure to zero when the trigger is released
• Retains line pressure inside the high-pressure hose
• Built-in bypass
• Integrated adjustable chemical injector
• 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 designed for low-pressure detergent application. A suitable low-pressure detergent nozzle or lance setting will normally be required for the injector to draw chemical correctly.

Chemical performance can be affected by nozzle size, hose length, detergent viscosity and the pressure washer’s operating conditions.

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

Important Ordering Information

This version is designed for compatible Annovi Reverberi RK and HRK pumps with flow rates up to 21 LPM.

Check the complete pump model, flow rate, connection sizes and existing unloader arrangement before ordering. If you are unsure about compatibility, please contact us with your pump model 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