This three-way thermostatic bypass valve is designed to be used in new or retrofit fin-tube baseboard installations to permit zone control of individual rooms using a nonelectric thermostat. The valve is furnished with compression fittings for 3¼4-in. copper tube, and is installed ahead of the fin tube in the supply side, where radiation enters the room. Standard copper fittings are used to connect to a bare bypass tube, which fits into most commercially available baseboard.

Enerjee, 24 S. Lafayette Ave., Morrisville, PA 19067; 215-295-0557; 215-736-2328 (fax); (e-mail); (website).