Effective June 1, Hansen Technologies Corp., Bolingbrook Ill., will institute a 3 percent price increase across its line.

Hansen Technologies, a subsidiary of Roper Industries, manufactures valves and controls for large industrial refrigeration systems. Its product line includes multi-platform valve stations, control valves, shutoff and solenoid valves, pressure-relief valves and regulators, refrigerant pumps, air/water purgers, defrost and liquid level controls, and safety detection systems.