This 4-gallon pressure tank is specially designed for residential Reverse Osmosis applications. It is different from the standard 3.2-gallon steel tank. It is made from polypropylene; So, it will never rust. The tank will accumulate water and provide pressure at the dispensing faucet. The bladder inside the tank will keep the purified water under pressure from the compressed air on the other side of the bladder.
This coated steel tank has a 1/2" stainless steel connector. A tank ball valve (not included makes the connection with 1/4" tubing possible. It comes with a tank stand. The white color tank has a side-mounted air valve. The outside volume is 4 gallons; internally the bladder holds 3.2 gallons.
Dimensions: 10" dia x 15" H ; Weight: 9 lbs.
To provide more instant RO water, use a larger tank, or connect several tanks together.