IN THE usual auttmobile poppet valve the poppet or mushroom valves are lifted from their seats ... Knight's invention is a mechanical or structural improvement in the design of the valve mechanism.

But aside from sealing, poppet valves don’t offer many advantages. Still, engineers kept pushing: better springs, VVT, and all kinds of breathing tricks: variable intake manifolds, forced induction, ...

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 ...

The aerospace valves market is projected to grow from an estimated USD 3.71 Billion in 2018 to USD 4.84 Billion by 2023, at a CAGR of 5.44% during the forecast period.

The stroke of the valves to provide the full flow area is approximately 25% of the stroke of the equivalent poppet valve, thus allowing direct electrical actuation with very low power consumption.

Officially replacing the rest of Stearns’ poppet-valve models, the Six was offered as a roadster on a 134-inch chassis, or as a touring car, limousine or landaulet on a 140-inch span.