This company's Hermetic liquid refrigerant pumps are designed to be safer for plant personnel and the environment. They have no seals, which prevents the possibility that harmful refrigerant will leak into the atmosphere. The motors are enclosed in a stainless steel pressure envelope. The units are also designed to keep maintenance to a minimum- no oil or grease is required because lubrication is required by the refrigerant. The pumps are compatible with ammonia, R22, R134a and other refrigerants, brines and industrial fluids.

Hansen Technologies Corp., 6827 High Grove Blvd., Burr Ridge, IL 60521-7579; 800/426-7368.