FM Valve

FM Valve Seisakusho Co., Ltd. is a Japanese specialist in automatic water supply control, founded in 1964 in Tokorozawa, Saitama Prefecture, and known nationwide as the byword for constant water level valves. For half a century the company has supplied the float-controlled FM valve family that regulates feed water into storage tanks for buildings and public facilities.

The product range includes straight and angle pattern FM level control valves, unit valves with integrated solenoid operation, ball taps for storage tanks, solenoid valves, motorized and emergency shutoff valve systems that protect water infrastructure during earthquakes, plus control panels and water level sensors. In-house valve and control engineering teams develop products from prototype through performance testing on actual water flow rigs, and many items carry Japan Water Works Association certification. Regional sales offices in Tokyo, Sapporo, Sendai, Nagoya, Osaka and Fukuoka provide nationwide service and maintenance dispatch.