The iSeries mixing valves are temperature-control devices for hydronic heating systems. They provide temperature control for outdoor reset control or fixed water supply temperature. The series consists of three sizes and two-way and three-way injection configurations. According to the manufacturer, the direct-drive actuator modulates a two-way or three-way valve that injects different rates of hot water, thereby ensuring delivery of almost any water temperature to the heating system. Working off an adjustable rest ratio, a valve's maximum and minimum system supply temperatures can be adjusted to support all types of jobs, including staple-up radiant floors that require a higher starting temperature, says the company. The valves include an adjustable boiler protection function, which prevents low water temperatures from returning to the boiler, the manufacturer states.
Taco Inc., 1160 Cranston St., Cranston, RI 02920; 401-942-8000; 401-942-2360 (fax); www.taco-hvac.com.