High flow. Compact robust construction. Mounts horizontally or vertically. Made from corrosion resistant materials. Shuts down slowly to minimize water hammer. 3/4″ – 2 1/2″ water level differential (increases as water inlet pressure increases). Pressure rating .3-7 bar (5-100 psi). Float position easily adjustable with no tools. Valve has switch to lock it in off position. Has port to connect frostpro anti freeze device sold separately. Available in 3/4″, 1″ and 1 1/4″.