5800 Series Water Delivery Pump
Self-priming demand pump with an integral pressure switch and push-to-connect fittings, for reverse osmosis delivery and low-pressure boosting on standard household power.
The Aquatec 5800 Series draws water from an atmospheric holding tank and pressurises it, or boosts an existing low-pressure line. It is the standard choice for moving RO water to a faucet, refrigerator, or ice maker located more than a few feet from the system. Every model on this page runs on 115 VAC household power and ships with the pressure switch factory-set, so the pump starts when you open the tap and stops when the line is satisfied. One high-pressure model rated to 130 PSI is also available below.
Match the Flow and Pressure to the Job
| Part Number | Flow (open) | Shut-off | Ports | Best for |
|---|---|---|---|---|
| 5851-7E12-J574 | 0.70 GPM | 60 PSI | 3/8" | Standard under-sink RO faucet and short ice maker runs |
| 5852-7E12-J574 | 0.90 GPM | 60 PSI | 3/8" | RO faucet plus a refrigerator line |
| 5852-1E13-B574 | 0.90 GPM | 60 PSI | 3/8" | OEM builds — supplied without a power cord |
| 5843-8D02-B574 | 0.98 GPM | 50 PSI | 1/4" | Retrofits plumbed entirely in 1/4" tubing |
| 5853-1E12-J574 | 0.98 GPM | 60 PSI | 3/8" | Longer runs where 0.7 GPM falls short |
| 5851-1L12-J584 | 0.99 GPM | 130 PSI | 3/8" | High-pressure transfer and vertical lift |
| 5852-7E12-J584 | 1.22 GPM | 60 PSI | 3/8" | Two fixtures fed from one storage tank |
| 5853-1E12-B524 | 1.70 GPM | 60 PSI | 3/8" | High flow, OEM — supplied without a power cord |
| 5853-1E12-J524 | 1.70 GPM | 60 PSI | 3/8" | High flow for light commercial delivery |
| 5853-7E12-J524 | 1.70 GPM | 60 PSI | 3/8" | High flow for light commercial delivery |
| 5852-7F12-J604 | 1.85 GPM | 70 PSI | 3/8" | Highest flow and pressure in the fixed-speed range |
How to read the part number: the letter in the middle sets the factory shut-off pressure — D = 50 PSI, E = 60 PSI, F = 70 PSI, L = 130 PSI. The third digit sets the ports: 4 = 1/4" push-to-connect, 5 = 3/8" push-to-connect. Flow figures above are open flow; flow at the shut-off pressure is lower, which is normal for a diaphragm pump.
Built for Continuous, Quiet Service
Demand or Delivery Mode
Runs in demand mode on its integral pressure switch, or in delivery mode under an external switching device such as a tank level controller.
Self-Priming, Dry-Run Safe
Primes 4.5 to 10.5 feet of lift depending on model and will not be damaged if the tank empties.
Thermal Protection
Built-in thermal protector opens at approximately 145°F motor shell temperature. Most 115 VAC models in this range are rated for continuous operation.
Push-to-Connect Ports
John Guest style quick-connect ports moulded into the pump head — 3/8" on most models, 1/4" on the 5843. No adapters, no tools.
NSF/ANSI 58 Certified
Certified to the reverse osmosis drinking water standard. Nylon housings, EPDM valves, Santoprene diaphragm, stainless fasteners.
Low Pulsation
Three-chamber design keeps pulsation and noise down at the flow rates typical of point-of-use delivery.
Where This Pump Belongs
Installed downstream of a reverse osmosis storage tank to deliver water to a faucet, refrigerator, ice maker, or a second holding tank. Also used to boost a low-pressure supply line, transfer from an atmospheric tank, and feed point-of-use dispensers. Works with 3/8" or 1/4" OD semi-rigid tubing via the integral push-to-connect ports. Suitable for intermittent residential duty or sustained multi-hour intervals in light commercial service.
Before you order: maximum inlet pressure is 60 PSI. Positive inlet pressure adds to discharge pressure for a given flow, so a pump fed from a pressurised line will run above its plate rating. Models with a B prefix in the third block (5852-1E13-B574, 5853-1E12-B524) ship without a power cord for OEM integration.
Verified Factory Data
| Pump design | 3-chamber positive displacement diaphragm pump, self-priming, can be run dry without damage |
| Certification | NSF/ANSI Standard 58 |
| Pump housings | Nylon |
| Valves | EPDM |
| Diaphragm | Santoprene |
| Fasteners | Stainless steel |
| Maximum inlet pressure | 60 PSI |
| Maximum liquid temperature | 170°F (77°C) |
| Weight | 6 lbs |
| Mounting | Steel base plate with four hollow rubber grommets; mounts in any orientation |
| Cycling limit | Maximum 6 starts per minute |
Ships from California
Stocked in Santa Ana and shipped the same business day on orders placed before cut-off.
Genuine Aquatec
Factory parts from Aquatec International, Irvine, CA. No rebranded substitutes.
Sizing Help
Not sure which model fits? Call (877) 541-6603 and we will spec it with you.
