Menu
Skip to main content
phone.svg 015395 66193email.svg sales@flowjet.co.uk
FacebookTwitterBlogYoutube
All Products
Brands
Machine Repair
Size Charts
Offers
Contact Us
Type to search
Type to search

Shop popular:

NEW Nilfisk Hot Pressure WashersPressure WashersMachine Parts by BrandPumps & SparesPopular High Pressure HosesHose ReelsNozzlesPressure Washer TriggersUnloader ValvesInterpump Service Kits

Free UK mainland delivery on orders over £200 excluding VAT

Speak to an Expert: 015395 66193

Finance Available

Rated 4.8 on Google

A&R Gymatic UnloadersA&R Gymatic Unloaders
AR Mini Matic 4B XT Unloader Valve – 7–10 LPM
Annovi Reverberi Gymatic Mini Matic Unloader With Chemical Injector

AR Mini Matic 4B XT Unloader Valve – 7–10 LPM

SKU: 20890
exc. vat
inc. vat
Price
£133.46
£160.15
In Stock
Order by 2 PM for next day delivery
  • Get finance on orders over £1000 Learn More
  • Free UK mainland delivery on orders over £200 excluding VAT
  • Bulk discounts available
  • Stock moves quickly. For large or urgent orders, call 015395 66193 to confirm availability.
  • Need assistance? Call 015395 66193

Overview

Annovi Reverberi Mini Matic 4B unloader valve for Annovi Reverberi XT pumps running at 7 to 10 litres per minute, rated to 180 bar (2600 psi). When the trigger gun is released it relieves pump pressure and sends the water through its built-in bypass.

It has a built-in adjustable chemical injector, a 1/2" BSP female inlet and a 3/8" BSP male outlet. A low pressure detergent nozzle or lance setting is normally needed for the injector to draw chemical; flush it with clean water after use.

Specification

Part number20890
BrandAnnovi Reverberi
ModelMini Matic 4B
Maximum pressure180 bar (2600 psi)
Flow range7 to 10 litres per minute
BypassBuilt-in
Chemical injectorBuilt-in, adjustable
Inlet1/2" BSP female
Outlet3/8" BSP male
MaterialBrass

Compatibility

Fits Annovi Reverberi XT pumps running at 7 to 10 litres per minute.

Sizing help

To check thread sizes, see our BSP thread size chart.

For technical advice or help choosing a part, call 015395 66193 or email sales@flowjet.co.uk.

    Get 10% Off Your First Order

    Join our trade list for new-stock alerts, clearance deals and expert cleaning tips. View our Privacy Policy. Unsubscribe at any time.

    Flowjet Cleaning Equipment is a family-run

    business dealing in commercial and industrial

    Pressure Washers

    Customer Service
    Contact UsAbout UsOur BrochuresServicing & RepairMachine Collection & Repair ServiceFinance
    Charts and Drawings
    Pressure Washer Nozzle ChartFoam Nozzle Size ChartParts DrawingFAQsDrone Cleaning EquipmentElectric Motor Sizing Guide
    Information
    Delivery & ReturnsTerms & ConditionsPrivacy PolicyCookie Policy
    Address

    Flowjet Cleaning Equipment LTD

    Unit 4, Gatebeck Farm

    Gatebeck, Kendal

    LA8 0HW

    United Kingdom

    015395 66193sales@flowjet.co.uk
    © 2026. Flowjet Cleaning Equipment Ltd. All rights reserved. Company No. 07548943 / VAT No. 946227313Built by Vitara Commerce
    FacebookTwitterBlogYoutube

    PROMO: Get 10% OFF

    Would you like to save 10% on your order today? Enter your email address to receive a discount code!

    By signing up, you agree to receive marketing emails. View our privacy policy and terms of service for more info.