iSpring T20M 20 Gallon Water Storage Tank for Well and Reverse Osmosis RO with 14 Gallon Capacity, White 20 gallon tank with 14 gallon storage capacity, tested by independent third-party to meet nsf/ansi standard Tank connector and shut-off valve included Shut-off valve connects to 3/8" Tubing Made from fda listed, food grade materials, specially designed for ro application Working pressure: 30psi-100psi