A butterfly valve has a hollow stem conducting outside air ... Co. He is credited with more than 100 U.S. patents and wrote eight books (among them the Control Valve Primer). His honors include being ...

The throttle body is a key component of a car's fuel/air delivery system, but carbon deposits and other debris can clog up its passages and moving parts.

According to a new market research report titled, 'Control Valves Market Size, Share, Forecast, & Trends Analysis by Product (Rotary Control Valves ...