Why it matters
Global Water Solutions PressureWave 21.1 gal Pressure Tank: 21.1 gal vertical tank. A mid-size pre-charged tank with a replaceable base and polypropylene liner.
Global Water Solutions lists the PWN-US-80LV at 21.1 gal with a 1 in female NPT connection, a polypropylene liner and a butyl diaphragm, 15.3 in wide and 32.08 in tall.
Who it's for, and who should skip it
Good fit if
- Replacing a 20 gal tank
- Well systems needing fewer pump starts
- Booster systems
Look elsewhere if
- Very high-demand homes (choose a larger tank)
- Horizontal installs
Pros and cons
Pros
- 21.1 gal
- Polypropylene liner, butyl diaphragm
- Replaceable base
Cons
- Not UL listed
- Vertical only
- Check pre-charge before install
Limitations to weigh
- Set the tank's air pre-charge 2 psi below the pump's cut-in pressure (28 psi for a 30/50 switch, 38 psi for 40/60) with the water off.
- Well pumps usually need a licensed installer, the right wire size and a pressure tank sized to the pump.
Specifications
Every figure below comes from the source shown in brackets. Where the maker doesn't state something, we say so instead of estimating.
| Price | $228.95 | Retailer |
|---|---|---|
| Model number | PWN-US-80LV | Retailer |
| Capacity | 21.1 gal | Retailer |
| Pipe size | 1 in NPT female | Retailer |
| Material | Steel, polypropylene liner | Retailer |
| Dimensions (seller) | 15.3 x 32.08 in | Retailer |
Alternatives worth comparing
More well pumps & tanks we cover
Final verdict
A mid-size pre-charged tank with a replaceable base and polypropylene liner; check it against your well, basin or tank before you buy.
Where to buy
Our links open this exact model's product page. Prices and stock change; check what's included before you order.
Each button opens this exact model. We may earn a commission on tracked links; it never changes what we publish. Disclosure


