stop cock การใช้

To provide for any malfunction in the water supply, a hand-operated stop cock was provided on the fresh water tank.
It featured the very first silver soldered boiler ( at the insistence of G & G ) and also had a steam pipe union nut at the boiler instead of the usual stop cock.
The pipe at the bottom has the valve that you're worrying about on it-this is a stop cock and is essentially just used to turn the cold water on and off-it's not really designed to be left partly open or closed.
His report states that several major buildings were not destroyed, including the City Hall, the Gate City hotel, the journals of burned cars and in the ruins of the various machinery of the extensive railroad shops; also, a valuable amount of copper from the guttering of the State depot, the flue pipes of destroyed engines, stop cocks of machinery, etc . " His report also states that many businesses, private homes, and several churches were destroyed.