The vapor-compression cycle has four stages (compression, condensation, expansion, and evaporation) and one ultimate goal: converting refrigerant into a state that makes it useful as a heat transfer ...

Directional-control valves are vital in any pneumatic circuit, directing or blocking airflow to control the speed or sequence of operations. One method of classifying directional-control valves is by ...

The EGV Series high-flow poppet valves are electronically piloted versions of the company’s GV Series valves. The valves come in 1/8-in. NPT ported and manifold mount and use 10 or 15-mm valves.

Editor’s note: This is the second in a three-part series that began in the March 12 issue with a discussion of heat reclaim in three-way valve operation. Heat reclaim can be accomplished with either a ...