Maezawa Industries, Inc. manufactures, sells, and installs equipment and apparatus for water supply and sewage systems in Japan and internationally. Its valve products include gate, control, butterfly, check, eccentric, air, hydrant, maintenance, emergency shutoff, and sluice gate and weir valves. The company also provides water treatment services covering water purification, wastewater treatment, industrial environment, and water supply. Founded in 1937, it is headquartered in Kawaguchi, Japan.