Walk into any chemical plant, glove factory, or water treatment facility in Malaysia and you will find AODD pumps running. Not because they are the cheapest option. Not because they...
Dosing Technologies
Auto-Dosing Unit
Compact Dosing, Built to Run Unattended
An Auto-Dosing Unit (ADU) pairs a peristaltic dosing pump with a timer, controller, or programmable circuit board inside a single, wall-mountable enclosure. The peristaltic pump moves chemical by compressing a flexible tube against a rotor — a simple mechanism with no seals or check valves in contact with the fluid, which suits viscous, corrosive, or particulate-laden liquids well. The controller decides when and how much to dose: on a repeating schedule, on a signal from host equipment, or from a live process reading.
Peristaltic dosing — a rotor compresses a flexible tube to move chemical, so no pump seals are exposed to the fluid being dosed
Timer or controller-driven — dosing follows a programmable schedule, an external signal, or a live pH/ORP/chlorine reading, depending on the application
Compact and self-contained — pump and control electronics share one IP65-rated enclosure, ready for wall mounting near the point of use
Four application types — Self-Service Laundry, Enzyme Dosing, Dishwashing, and Swimming Pool, each matched to its own dosing profile
Browse by Application
All Application Types
Peristaltic Pump + Controller
Self-Service Laundry ADU
Dosing units for coin-op and self-service laundromats, dispensing detergent and softener into each wash cycle on a timed or signal-triggered basis. Multi-pump controllers run several wash programmes from one unit.
Peristaltic Pump + Controller
Enzyme Dosing ADU
Timed enzyme dosing for grease traps and drain lines in commercial kitchens, breaking down FOG (fats, oils and grease) and keeping lines clear. A weekly programmable timer schedules dosing automatically, with no daily intervention required.
Peristaltic Pump + Controller
Dishwashing ADU
Dual-pump dosing units for professional dishwashers, metering detergent and rinse aid independently, each set to match wash chemistry and rinse-cycle requirements.
Peristaltic Pump + Controller
Swimming Pool ADU
Digital pH, ORP and free-chlorine dosing controllers for pool water treatment, using dosing pumps driven by live probe readings to keep pool chemistry within range automatically.
Stay Informed
Latest Resources
Why Stroke Rate Matters More Than You Think When Dosing Viscous Chemicals
Most engineers size a metering pump based on two things: the required flow rate and the discharge pressure. These are the right starting points. But for viscous chemicals, there is...
Why Conductivity Alone Is Not Enough to Control a Cooling Tower
Conductivity control is the foundation of every cooling tower water treatment programme. It keeps dissolved solids from concentrating to the point of scale formation, and it triggers the bleed-and-dose cycle...
What Cycles of Concentration Mean and How to Use Them to Reduce Cooling Tower Water Waste
Every cooling tower loses water in two ways: evaporation and blowdown. Evaporation is the mechanism by which the tower actually cools — water evaporates and carries heat away with it....
The Problem with Undersizing an AODD Pump: Pressure, Fatigue, and Why Bigger Flow Demands Aren’t Always the Answer
Oversizing an AODD pump is a common mistake — but undersizing is arguably worse. An oversized pump wastes compressed air and accelerates diaphragm wear through overwork. An undersized pump does...
How Installation Conditions Affect AODD Pump Performance More Than the Pump Itself
An AODD pump that fails repeatedly is rarely a pump problem. The pump is the most visible component in the system and the easiest one to blame — but in...