Reverse Osmosis Water (RO water) is purified by pushing water through semi-permeable membranes, typically removing 95% to 99% of dissolved salts. RO permeate is used for drinking water systems, food and beverage production, car washes, boiler feed, hydroponics, aquariums and laboratories. Because RO water is slightly aggressive toward metals, food-grade plastic storage tanks are common. Use the compatibility ratings to choose the right tank resin, fittings and gaskets.
HDPE is the most economical tank material for Water, Reverse Osmosis, rated Excellent. Polypropylene, nylon and PVDF (Kynar®) are also rated Good or better.
How Water, Reverse Osmosis works with the plastics used to make our storage tanks.
| Material | Rating |
|---|---|
| HDPE | |
| Polypropylene | |
| Nylon | |
| PVDF (Kynar®) |
How Water, Reverse Osmosis works with the plastics used for tank fittings.
| Material | Rating |
|---|---|
| HDPE | |
| PVC | |
| CPVC | |
| Polypropylene | |
| PVDF |
How Water, Reverse Osmosis works with gasket and O-ring materials.
| Material | Rating |
|---|---|
| Buna-N | |
| EPDM | |
| Viton® |
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