Pipe Shut Off Valve

shut off
block off the passage through; "We shut off the valve"
isolate or separate; "She was shut off from the friends"
The cessation of flow, supply, or activity
stem the flow of; "shut off the gas when you leave for a vacation"
A device used for stopping a supply or operation

valve
A device for controlling the passage of fluid through a pipe or duct, esp. an automatic device allowing movement in one direction only
A membranous fold in a hollow organ or tubular structure, such as a blood vessel or the digestive tract, that maintains the flow of the contents in one direction by closing in response to any pressure from reverse flow
control consisting of a mechanical device for controlling the flow of a fluid
a structure in a hollow organ (like the heart) with a flap to insure one-way flow of fluid through it
A cylindrical mechanism in a brass instrument that, when depressed or turned, admits air into different sections of tubing and so extends the range of available notes
device in a brass wind instrument for varying the length of the air column to alter the pitch of a tone

pipe
a long tube made of metal or plastic that is used to carry water or oil or gas etc.
a tube with a small bowl at one end; used for smoking tobacco
A cylindrical vein of ore or rock, esp. one in which diamonds are found
A cavity in cast metal
A tube of metal, plastic, or other material used to convey water, gas, oil, or other fluid substances
shriek: utter a shrill cry