Yahoo Finance

Coates International, Ltd. - The New York Times Reports That President Obama Requests New Rules to Cut Heavy Truck Pollution and Reduce Fuel Consumption; This Is Not Possible ...

WALL TOWNSHIP, NJ--(Marketwired - Feb 25, 2014) - Coates International, Ltd. ("the Company") (OTCQB: COTE) President Obama took another step to curb green house gas pollution on Tuesday last week ...
Machine Design

What’s the Difference Between Poppet and Piston Spool Valves?

This file type includes high resolution graphics and schematics when applicable. The images above are simple cross sections of a typical spool valve (left) and a poppet valve (right). (Courtesy of ...
Ars Technica

Removing very, very aged cosmoline/etc from a radial engine valve: How?

I picked up some surplus WWII radial engine poppet valves (think late WWII bomber engines... the valves are HUGE). They were in the original packaging, and coated with protective goo. It's a dark ...
Machine Design

What’s the Difference Between Poppet and Piston Spool Valves? (.PDF Download)

Deciding which valve to use for a hydraulic or pneumatic system depends on a couple of design factors: the internal design of your circuit and the overall function of your valves. The two major valves ...