The Topaz Compact Valve is a float operated water valve for use in automated filling of water troughs, storage tanks, cisterns, etc., where space is limited. The Valve is configured for above water mounting only. The compact weighted float operates a small pilot valve which in turn operates the main diaphragm valve. Topaz Compact valves ar a good choice when high flow, compact, robust, non corrosive construction and high level of adaptability are desired. Topaz Compact Valves are available in sizes 3/4"and 1" (NPT). Operating pressure is 5-150 psi. Maximum Temperature is 140 degrees (F). Topaz Compact Valves are NSF 372 Certified for potable water systems. Topaz Compact Valves have a patented 1/4 turn removable base for easy cleaning and servicing.