Profile: Harper International is the manufacturer of valves. Our valves includes automatic control valves, pressure reducing valves, air and check valves, solenoid valves, gauges & switches, tanks, filters & water treatment products. Our automatic control valves are used in application such as waterworks distribution systems, fire protection systems, farm irrigation, navy ship systems, ground fueling and industrial fluid handling systems. Our solenoid is an electromagnetic part of a valve, comprised of a coil, core-tube, core and enclosure & it is designed to handle the fluid control applications.