In hydronic heating, to control where heated water goes to various sections of a building, the system might rely on two or more zone valves. A zone valve opens or closes based on demand from a ...

Equipment for gas chromatography, liquid chromatography and mass spectrometry is complex, with multiple subsystems that control the flow of sample analyte, carrier gas and solvent fluids. The ...

When a pneumatic cylinder starts moving slowly, fails to retract, or stops responding altogether, the solenoid valve is ...

Like so many of the core technologies integral to automated industrial operations—such as motors, drives, and I/O—valves don’t always receive the attention they deserve in the automation arena.

An on/off valve is the fluid equivalent of an electrical switch: a device that either allows unimpeded flow or acts to prevent flow altogether. These valves are often used for routing process fluid to ...

Heart valve disease happens when one or more of your heart’s four valves don’t work properly, preventing oxygen-rich blood from moving efficiently through your heart and to your body. This forces your ...