Doza Pumps vs Dosatron water-powered proportioners
A Dosatron holds a ratio to the water flowing through it, using only water pressure. A Doza Pump delivers a set amount per car and records it. The right choice depends on which of those you need.
The short answer
Choose a Dosatron when you want a steady dilution ratio in a water line with no electricity. Choose Doza when you think in mL per car, want the chemical to run independently of the water flow, or need records of what was used.
Side by side
| Doza Pump | Dosatron D25 series | |
|---|---|---|
| Power | 24V DC, about 30 W | Water pressure, no electricity |
| What sets the amount | mL per signal, or mL/s while a signal is on | A ratio dial, as a share of the water flow |
| If water flow changes | The pump's dose stays the same | The ratio holds, so the amount follows the flow |
| Repeatability | ±1% in bench tests with water; calibrate to your chemical | ±3% (accuracy ±5%), per the manufacturer's catalog |
| Triggered by wash controller | Yes, 24–120 V AC or DC signal | Runs whenever water flows |
| Per-dose records and cost per car | Built in, with DozaLink | Not listed in the materials we reviewed |
| Roles and audit log | Built in, with DozaLink | Not listed in the materials we reviewed |
| Changing a dose | From DozaLink or at the device | At the dial on the unit |
Where a Dosatron is the better pick
- No power needed: it runs anywhere there's water pressure.
- Ratio follows the flow: ideal where flow varies and you want the same dilution throughout.
- Simple to live with: there's no account, no Wi-Fi and no subscription.
Where Doza is the better pick
- Dose per car: a set amount for each signal, rather than an amount that depends on water use.
- Small, concentrated doses: products like tire shine go on neat, without water carrying them.
- Knowing what it cost: each dose is recorded and priced, per chemical and per site.
- Control: nobody changes a dose by turning a dial. Each change is limited by role and recorded with who made it.
- Dosing with no water flow: a pump can also run a timed schedule, for jobs such as reclaim water treatment.
What to plan for with Doza
The pump tube is a wear part: about 1,000 pumping hours on white Standard tubing and 100 on black Tire Shine tubing, tracked in DozaLink. Remote features need 2.4 GHz Wi-Fi and a DozaLink subscription per device. The unit mounts indoors, out of direct spray.
Dosatron details are from Dosatron's how it works and D25 pages and its catalog, reviewed in November 2026. Check current documents before you buy. Dosatron is a trademark of its owner. Doza is not affiliated with or endorsed by Dosatron. See something out of date? Email sales@dozalink.com and we will correct it.
Common questions
What is the difference between a proportioner and a dosing pump?
A proportioner adds chemical as a ratio of the water flowing through it, so the amount follows the water. A dosing pump like Doza delivers a set amount or flow rate of its own, whatever the water is doing.
Does Doza need electricity where a Dosatron does not?
Yes. A Dosatron is powered by water pressure, while Doza needs a standard outlet near the unit. In return, Doza can record each dose and report it, which is what makes cost per car possible.