The ASV-2000W is a compact valve with four fully integrated 1/4" tubing connections. This valve is designed for a reverse osmosis system with a capacity of up to 50gpd product water (50gpd membrane). The valve shuts off when the tank pressure reaches 60% of the line or feed water pressure. The ASV2000W has earned the Gold Seal for material safety and structural integrity from the Water Quality Association.Automatic Shut-off Valve with Quick-Connect Fittings which connect and disconnect without tools. All tube connections are 1/4" with "in" and "out" labeled on the top. Dimensions: 2�'' L x 1�'' W x 1�'' D Gold Seal for material safety and structural integrity from the Water Quality Association Four 1/4" NPT tubing connections