Check valves use a ball or poppet to prevent flow in one or more directions. In two-port valves, the ball or poppet is usually lightly spring loaded against one of the ports.

When designing pneumatic circuits, there are two valve designs to consider. We will examine the differences between a poppet and a spool valve and determine which fits best for your design. This ...

Four Stroke Cycle with Poppet valves. Courtesy Wikipedia, CC BY-SA 3.0. During the compression stroke, the valve cylinder becomes part of the combustion chamber, ...

When one of the poppet valves completely clogged our engine with 180,000 miles on the odometer, we thought our Vortec V-8 may have seen its last days. Our '96 Chevy truck was beginning to fall on ...