reverse osmosis larg tank (NOTE: The tank is big, it will not fit under the sink.)
Dimension of the tank : 15.25" diameter and the height is 23" with stand, 3/4" FPT (w/adapter to 1") inlet connection
A pressure tank is used in RO systems to accumulate water and provide pressure when dispensing the purified water. It has a water bladder inside the tank that holds the purified water, and outside the bladder it contains compressed air. So when you dispense water, the compressed air squeezes the bladder and forces the water out with pressure. You can also connect several tanks together to provide more water.