Tekmar has introduced four new switching relay and zone valve control models. They now offer two-zone pumps, three-zone pumps, three-zone valves, and five-zone valves. They are compatible with all low-voltage thermostats. These units allow unlimited system expansion; system exercising to prevents pumps from seizing during the summer; zone priority; and priority override to protect homes from freezing over the winter months.
Tekmar Control Systems www.tekmarcontrols.com