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Humphrey's pump consists of a large U-shaped tube, filled with water. One end is sealed by a heavy cast iron, or steel, 'combustion head'. The combustion head contains the inlet and exhaust valves, the ignition source and withstands the pressure of the combustion chamber. Water enters the pump through sprung inlet valves below the combustion ...
Solenoid valves. A solenoid valve is an electromechanically operated valve.. Solenoid valves differ in the characteristics of the electric current they use, the strength of the magnetic field they generate, the mechanism they use to regulate the fluid, and the type and characteristics of fluid they control.
Cylinder, with slide valve removed to show ports A double-acting slide valve cylinder. Steam enters via the steam port SP, and is admitted by the slide valve SV through the upper passage S to push down the piston P. At the same time, exhaust steam from below the piston passes back up the lower passage S, via the valve cavity, to exhaust E. As ...
There is a common legend that in 1713 a cock boy named Humphrey Potter, [13] whose duty it was to open and shut the valves of an engine he attended, made the engine self-acting by causing the beam itself to open and close the valves by suitable cords and catches [14] (known as the "potter cord"); [15] however the plug tree device (the first ...
Electric power to the PORV's solenoid was automatically cut, but the relief valve was stuck open with coolant water continuing to be released. [ 36 ] In post-accident investigations, the indication for the PORV was one of many design flaws identified in the operators' controls, instruments and alarms . [ 9 ]
John Humphrey (also spelled Humfrey or Humfry, c. 1597 – 1661) was an English Puritan and an early funder of the English colonisation of North America.He was the treasurer of the Dorchester Company, which established an unsuccessful settlement on Massachusetts Bay in the 1620s, and was deputy governor of the Massachusetts Bay Company from 1629 to 1630.
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