Cat water fountains · Choose by your needs
If a no-plug gravity station must hold at least 8 L, PetSafe Healthy Pet Water Station Large PFD17-11856 is the documented choice: its 2.5-gallon tank is rounded to 9.5 L on the maker's sizing chart. A gravity valve refills the stainless bowl; it does not circulate water. The large reservoir must be lifted, inverted and locked for refill, and capacity is not an unattended-time promise.
Comparison updated 29 October 2026.
| Model | Exact configuration | Confirmed capacity/power | Handling and limit |
|---|---|---|---|
| PetSafe Healthy Pet Water Station Large (2.5 gal) PFD17-11856 | PetSafe Healthy Pet Water Station Large PFD17-11856 | 2.5 US gal; 9.5 L rounded on sizing chart; gravity only | Lift, refill, invert and lock the tank; the bowl does not circulate. |
Choose it when: The exact Large PFD17-11856 station is documented as gravity-fed and its maker lists a 2.5-gallon reservoir, rounded to 9.5 L on the sizing chart.
The limit: A still bowl is not circulating water. The filled tank requires careful two-handed handling and the fountain still needs regular inspection, cleaning and refill checks.
The large reservoir tops up the bowl mechanically as water is used. There is no powered fountain stream, sensor flow, timer or battery. If active circulation is essential, choose a powered setup and accept its documented reservoir threshold instead.
The 9.5 L figure is a nominal maker specification; it does not predict how quickly the water will be used or how long it can be left unchecked. Follow the assembly instructions and keep the bowl clean.
No. The exact station uses a gravity valve and no electrical pump. The 9.5 L reservoir is a still-water supply.
No. The documented capacity is 2.5 U.S. gallons, rounded to 9.5 L on the maker's size chart, below 10 L.
The Medium has a one-gallon reservoir rounded to 4 L and the Small a half-gallon rounded to 2 L. Neither meets an 8 L minimum; the full gravity page compares all three sizes.
