Steam Boilers, Engines, Nozzles and Turbines
The function of a valve rod is

To provide reciprocating motion to the slide valve
To convert reciprocating motion of the piston into rotary motion of the crank
To convert rotary motion of the crankshaft into to and fro motion of the valve rod
To provide simple harmonic motion to the D-slide valve

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Steam Boilers, Engines, Nozzles and Turbines
The ultimate analysis of fuel lists

Fuel constituents as percents by weight of moisture, volatile, fixed carbon and ash
Fuel constituents as percents by volume of moisture, volatile, fixed carbon and ash
Various chemical constituents, carbon, hydrogen, oxygen etc, plus ash as percents by volume
Various chemical constituents, carbon, hydrogen, oxygen, etc, plus ash as percents by weight

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