stopcock

While down below, in the engine room, there grow “vines of copper piping and sprouting thermometers, the fuel pumps budded with bolts and flowering stopcocks”.

"As ice turns to water in the Arctic, New Atlantis turns stopcocks in London," trumpet the headlines in the newspapers.

The image immediately above shows the location of a gas stopcock cover.

Just a reason to turn on the stopcock that takes government cash from its source in the Treasury.

“The stopcock is broken off this manifold and needs to be sealed back together.”