Is to work and help the plants grow
Probably the steam engine.
because the steam is very importance in main engine
Steam engines were first used to pump water out of mines.
Used in power generation. When steam turbine is on-line the Main Steam Stop Valve is fully open. When offline it is closed. Steam to turbine is controlled thru control valves after Main Steam Stop Valve
yes they came before steam engines
If by 'main' you mean largest then that would be the boiler.
the main job in jamaica is construction
The function of steam stop valve to supply steam to steam maniform and the function safety valve to prevent the steam high pressure over.
Captaining a steam boat
A "steamist" is not a job; on the other hand, it is a brand of commercial steam generators. Some of the products produced by the brand include the HC-48 Commercial Steam Generator System, which is used to generate steam in locations such as spas and saunas.
the four main parts are the root,steam,leaves,
It is a stop valve placed on an auxiliary piece of equipment. Or it could be placed at the steam main to feed an auxiliary steam system (heating, auxiliary pumping. etc.). It is not the Main steam stop for the boiler or the prime mover (engine, turbine, process), it is for a secondary service.