T32M Pressurized Water Storage Tank with Ball Valve for Reverse Osmosis RO Syste
ISpring T32M 3. The concern that pollutants may be allowed in when using an open air tank favors the use of a closed expansion tank such as the T32M. T32M Pressurized Water Storage Tank with Ball Valve for Reverse Osmosis RO Systems, 4 Gallon, 1/4″ Tank Valve Included, White.