FLORHAM PARK, N.J. — Emerson’s ASCO™ Series 158 Gas Valve and Series 159 Motorized Actuator is designed specifically for burner-boiler applications. The new products give OEMs, distributors, ...

Recently I wrote in this column that every component in a controls circuit is a power supply, a switch or a load — no other possibilities. And that means that every control, hydronic or otherwise, is ...