The Hansen oil temperature valve (HOTV) is a three-way mixing valve used to control the oil temperature of screw compressors or other oil-cooling circuits within design parameters. An internal thermostatic element modulates to maintain a near-constant temperature at the valve outlet. The unit has tamperproof temperature settings and a Teflon® sliding seal, which is unaffected by refrigerant compatibility concerns, the manufacturer says. The valve is offered with standard 1 1/2- or 2-in. socket weld end connections; 2 1/2- and 3-in. connections will be added.

Hansen Technologies Corp., 6827 High Grove Blvd., Burr Ridge, IL 60521; 800-426-7368; 630-325-1572 (fax); (e-mail); (Web site).