Product Information

Dose & Fill® Pressurisation & Dosing Unit

Stockcode: DFsize

Dose & Fill® has been developed to combat the growing costs and problems associated with heating systems starved of inhibitor. Modern systems frequently have aluminium heat exchangers, steel panel radiators & thin copper tubing, requiring adequate levels of inhibitor to avoid perforations, blockages and to validate the manufacturers' warranties. Traditionally a system is manually dosed via a dosing pot after the initial fill. However, this is diluted every time the pressurisation unit adds plain water following normal minor losses or after partial draining for maintenance. Dose & Fill® is a compact & wall mounted filling and automatic make-up unit for adding water to a sealed system. The Dose & Fill® incorporates the Arrow Valves Midi-Fill Digital® pressurisation unit, whilst the lower half of the 1 m tall enclosure contains a 20 litre chemical container. In "Auto Dose" mode, the unit monitors the quantity of water added by the pressurisation unit and then the dosing pumps automatically inject inhibitor into the heating system according to concentration set via the LCD digital display. The correct concentration is therefore maintained. Dose & Fill® has been designed to comply with the Water Regulations, providing Fluid Category 5 backflow protection for filling and top-up of "non-house" heating or systems.

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About us

Arrow Valves Ltd provides a series of innovative, high quality, durable, water related products. Our range is designed to enable M&E specifiers and contractors to comply with Water Regulation requirements. Our cost effective technical products and high quality support service ensures our customers are assisted throughout the specifying and buying process.

Our comprehensive range, many water and energy saving (KIWA UK / WRAS Approved), include products for:

Backflow Prevention (Categories 5-4 and 3-1) – Booster Pumps –Non-Return Valves – Pressure Regulating – Flow Control and Measurement – Washroom – Care Shower - Heating – Isolating – Standpipes & Taps (Conceal A Tap & Tamperproof Standpipes & Hose Union Bib Tap)

From specifying through purchasing and onto after sale servicing you can rely on Arrow Valves to ensure the smooth running of any project no matter how large or small. We have accredited Service Engineers nationwide to undertake necessary annual testing.

Arrow Valves Team is BPEC qualified in Water Regulations - You will receive precise information and advice from our team, giving you peace of mind.

For high standard products, specialist expert service to assist with the essential task of adhering to the Water Regulations, contact Arrow Valves Ltd. For immediate technical information on products, quotations and more details on Water Regulations please visit our website.

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Articles/Press Releases

06/09/2023 - Backflow prevention is worth caring about:
The Arrow Valves Care Shower package is the combination of a Midi break providing fluid category 5 backflow prevention and a BEAB approved Shower.
10/03/2020 - Protect your lab taps
24/02/2020 - Winter Warmers – assurance for your heating systems, all year round
Arrow Valves Ltd have introduced new product packages – specifically for commercial heating systems.
09/12/2019 - “Arrow Valves - Peace of mind servicing
WE’RE COMMITTED TO YOUR PEACE OF MIND… with our Arrow Service & Support
04/11/2019 - Introducing: new and improved “Pent A Boost”
Arrow Valves, firm believers in continuous product development, have improved a customer favourite, our model Pent-A-Boost – compact domestic booster set.
07/08/2019 - Boost-A-Break” – more powerful than ever!
BOOST-A-BREAK: Model BTAB with break tank and pump set.
24/04/2018 - More than just a ‘Standpipe…’
No power for your Fluid Category 5 application? No problem for our Fluid Category 5 Standpipe!
17/07/2017 - Product News & Innovations – Introducing the “Pillar Standpipe”
Be a “pillar” of society and comply with the Water Regulations.
19/07/2016 - Introducing the Automatic Waterstop Valve
There are two words that no one ever wants to hear… “Flood Damage.”
03/10/2011 - Advanced Pressurisation Unit
Compact wall mounted Pressurisation Unit offering Fluid Category 5 backflow protection developed by Arrow Valves Ltd.
03/10/2011 - Pressurisation & Automatic Dosing Unit
Arrow Valves has launched an innovative automatic Pressurisation and Dosing Unit.
03/10/2011 - “Pent-A-Boost” Compact Domestic Booster Set
Arrow Valves have introduced a Pump Set with AF air gap to primarily boost water pressure for tall buildings such as penthouse suites – particularly assisting with shower performance and pressure for combination boilers and all outlets
20/09/2011 - Miniature Standpipe – Discreet Watering
Arrow Valves Ltd has improved their miniature permanent standpipe for discreet installation in flower beds and other open areas.
20/09/2011 - Tamperproof Permanent Standpipe
Arrow Valves Ltd have introduced a Water Regulations approved permanent Standpipe with hose union tap for use in areas where there is no wall to attach to.
20/09/2011 - Commercial Permanent Standpipe – Fluid Category 4
Arrow Valves Ltd have introduced a Water Regulations approved permanent standpipe with hose outlet for use in areas where there is no wall to attach to.
20/09/2011 - “Midi-Break” Break Tank & Booster Set
A wall mounted Break Tank offering Fluid Category 5 protection has been developed by Arrow Valves Ltd to provide point of use backflow protection and boost pressure.
20/09/2011 - “Boost-A-Break” Break Tank & Booster Set
Arrow Valves has developed a range of pump sets with Break Tanks offering Fluid Category 5 protection via integral AB air gap.
12/10/2010 - Arrow Valves launch Telescopic Hose Union “Conceal-A-Tap”
Arrow Valves Ltd have launched a hose union tap which can be recessed into any thickness of wall.
12/10/2010 - Safe Hot Water with Fluid Category 5 Protection
Arrow Valves Ltd have launched an Ablution Plant to deliver safe hot water to hoses adjacent to a WC or bidet.
12/05/2008 - Tamperproof Hose Union Bib Tap with Shelf
Arrow Valves Ltd have launched a 900 mm high permanent standpipe with hose union tap for use in areas where a facility for filling vessels is required and there is no wall to attach to.
12/05/2008 - Secure Hose Union Tamperproof Tap Box
An aesthetically pleasing compact surface mounted tamperproof hose union tap box has been especially developed by Arrow Valves Ltd to reduce the risk of vandalism and subsequent cost of water loss associated with damaged external taps.
12/05/2008 - Arrow Valves “Equi-Flow” Automatic Shower Flow Limiter
The “Equi-Flow” automatic shower flow limiter from Arrow Valves Ltd is especially designed to be fitted to a standard shower hose or fixed head, saving water and energy.
12/05/2008 - Care Shower – Thermostatically Controlled Shower
Arrow Valves Ltd have introduced a Care Shower (model CSABATLF) consisting of an electric shower and Booster Pump package
12/05/2008 - Arrow Valves “Autofill” Pressurisation Unit
Arrow Valves Ltd have launched a Water Regulations approved pumpless pressurisation unit designed to both fill and pressurise “non-house” heating or chilled water systems, model AFS.
12/05/2008 - Servicing valve with Automatic Flow Limiting
Arrow Valves Ltd have introduced a quarter turn servicing valve with a ball capable of accepting an Automatic Flow Limiting (AFL) cartridge to limit the flow of hot and cold water.

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Latest Reviews

Arrow Valves Ltd

A wonderful company to deal with. They are technically astute and know their stuff in terms of advice on the right product.Placed an order for a client and then unfortunately had cause to cancel due to issues with the client. Despite having paid they were wonderful and allowed me to cancel the order.Truly a fantastic company to deal with and certainly worth a call if you have need for a valve.

Reviewer's name hidden or missing - 16 May 2023

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Company details for Arrow Valves Ltd

Arrow Valves Ltd