Doza Pumps vs Flojet air-operated pumps
A Flojet air-operated pump moves a lot of chemical on compressed air, with no electricity at the pump. A Doza Pump delivers a set number of mL and records it. They suit different jobs.
The short answer
Choose an air pump when you need high volume or simple transfer and already have compressed air. Choose Doza when the goal is a specific dose per car, a record of what each dose cost, and control over who can change it.
Side by side
| Doza Pump | Flojet G57 | |
|---|---|---|
| Type | Peristaltic, two pumps per unit | Air-operated double diaphragm |
| Power | 24V DC, about 30 W | Compressed air, 20–100 PSI |
| Top flow | 5 mL/s (about 0.08 GPM) | Up to 5 GPM |
| How the amount is set | A number in mL, or a flow rate while a signal is on | No volume setting; output varies with air pressure and the line |
| Repeatability | ±1% in bench tests with water; calibrate to your chemical | No per-dose figure in the materials we reviewed |
| 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 |
| Remote dose changes | Yes, from DozaLink | Not listed in the materials we reviewed |
Where a Flojet air pump is the better pick
- High volume: if you need gallons per minute, a Doza Pump is the wrong tool.
- No electricity at the pump: it runs anywhere compressed air can reach.
- Solvent options: Xylem offers it with a range of elastomers and lists solvent applications among its uses.
- No subscription: there's no monthly fee, and no Wi-Fi to set up.
Where Doza is the better pick
- A dose you can name: set 30 mL per car and that is what the pump aims to deliver, calibrated to your chemical.
- Cost per car: every dose is recorded and priced, so you can see what each chemical costs at each site.
- Control: choose who can change a dose, per location, and see each change with before and after values.
- No air system: the unit needs only an outlet and a controller signal.
- Chemical touches only the tube: there are no diaphragms or check valves in contact with the chemical.
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.
Flojet G57 details are from Xylem's product page and installation guide, reviewed in November 2026. Check current documents before you buy. Flojet is a trademark of its owner. Doza is not affiliated with or endorsed by Flojet or Xylem. See something out of date? Email sales@dozalink.com and we will correct it.
Common questions
Is a Doza Pump a direct replacement for a Flojet G57?
For metering chemical into a wash function, often yes. For moving chemical in bulk, no: the G57 is rated up to 5 gallons per minute, far beyond Doza's top rate of 5 mL per second.
Does Doza need compressed air?
No. Doza runs from a 24V DC power supply that plugs into a standard outlet, and it connects to your controller with a 24 to 120 V AC or DC signal.