iSpring T55M 5.5 Gallon Residential Pre-Pressurized aqua Storage Tank for Reverse Osmosis (RO) Systems

5.5 Gallon Metal Pressurized Tank with up to 4 Gallon Holding Capacity Stainless Steel 1/4" NPT Valve Thread Made from food-grade material (Tested by independent third-party to meet NSF/ANSI standard) Discharges effectively in both vertical and horizontal position Pre-pressurized between 7-10 psi for common use