The new Valbia® VB008 Mini quarter-turn direct-mount electric actuator measures 4.75-in long by 2.75-in wide. Used with .25- to 1.25-in full-port direct mount ball valves, the company says it provides the compact and reliable automatic flow control for a wide range of HVAC, light industrial, and OEM applications.
Andy Cummings of Southland Industries has suffered through his share of cumbersome damper actuator installs. With over 30 years of experience in the sheet metal industry, he knows that the process is not only time-consuming, it can yield disappointing results if the connections are in any way unstable.
Leaning on experience and data from various K-12 cities and projects, the author pursues some less conventional design approaches. They may revolve around radiant heating and/or cooling, but depending on school size and other factors, the smart use of heat recovery, DOAS, and improved central plants could also put a project on the HVAC honor roll.