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2. Corliss steam engine - Wikipedia

   en.wikipedia.org/wiki/Corliss_steam_engine

   A Corliss steam engine – the valve gear is on the right of the cylinder block, on the left of the picture. A Corliss steam engine (or Corliss engine) is a steam engine, fitted with rotary valves and with variable valve timing patented in 1849, invented by and named after the US engineer George Henry Corliss of Providence, Rhode Island.

3. January 2025 Richmond water crisis - Wikipedia

   en.wikipedia.org/wiki/January_2025_Richmond...

   Henrico's water main on Staples Mill Road dates to the 1950s, and had had emergency repairs completed on it many times in the 18 months before the outage. During these repairs, officials had been able to replace leaking valves and install new valves, better allowing them to close off sections of the pipe if necessary. [23]

4. Expansion valve (steam engine) - Wikipedia

   en.wikipedia.org/wiki/Expansion_valve_(steam_engine)

   In the fully developed forms of the high-speed engine (from around 1900) though, expansion was controlled by governing the timing [v] of a single valve, rather than a separate expansion valve. These led to further complex valve types such as poppet valves , often driven by cam-based valve gears rather than linkages.

5. Camless piston engine - Wikipedia

   en.wikipedia.org/wiki/Camless_piston_engine

   Conventional mechanical camshaft actuation is capable of generating extremely high forces which, combined with very high stiffness/low mechanical compliance of a conventional modern valve train layout, are used to very accurately and consistently control the position the engine valves. This enables very high levels of valve acceleration and ...

6. Cutoff (steam engine) - Wikipedia

   en.wikipedia.org/wiki/Cutoff_(steam_engine)

   In a steam engine, cutoff is the point in the piston stroke at which the inlet valve is closed. On a steam locomotive, the cutoff is controlled by the reversing gear.. The point at which the inlet valve closes and stops the entry of steam into the cylinder from the boiler plays a crucial role in the control of a steam engine.

7. Cornish engine valve gear - Wikipedia

   en.wikipedia.org/wiki/Cornish_engine_valve_gear

   The older was built as a low pressure Boulton & Watt engine in 1812 and converted to the Cornish cycle in 1843, the other dates from 1846. Valve gear opens and closes valves in the correct order. In rotating engines valve timings can be driven by eccentrics or cranks, but in non-rotative beam engines these options are not