Isopure Water · Tanks
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Isopure Water · Tanks & Storage
RO Storage Tanks & Retention Tanks
Reverse osmosis makes water slowly, so it's stored in a pressurized tank for on-demand use; other systems use atmospheric or retention tanks for contact time and reserve. We carry RO storage tanks and larger retention/storage tanks from Watts and PAE in the capacities and fittings that fit residential and light-commercial systems.
How to choose a tank
Size the RO tank. Under-sink RO tanks run ~3–4 gallons (usable is less); larger households or coffee/ice use benefit from a bigger tank.
Check the fitting. Most RO tanks use a 1/4" NPT port with a tank ball valve — confirm before ordering.
Set the air charge. An empty RO tank has a factory air pre-charge (~7–8 PSI) — a flat tank kills production and delivery.
Retention tanks for contact. Fiberglass retention tanks give oxidizers (air, ozone, chlorine) time to react before filtration.
Tell us your system and we'll match the tank and fittings. Ask us.
