from the hub to the spigot
A spigot is a name for the pipe where water comes out of the plumbing. There is usually a handle that when turned can stop or start the flow of the water.
A device for controlling the flow of liquid, as from a pipe; tap
flow to
By cutting in a cast iron Wye so the flow enters the sewer line (soil pipe) at a right angle
One way to describe electricity to a lay person is that of a large vat full of water with a spigot at the bottom. The water in the vat represents the voltage potential of the source of the electricity. The amount the spigot is open represents the resistance and the flow of water out of the spigot represents current flow. As you open the spigot more the resistance decreases and the potential (the water) is depleted over time. In this example you could say that the potential was somewhat analogous to mass in a physical sense.
in which direction does the river Shannon flow?
You DON'T cut any hole in CI pipe what you do is install a TEE with the the wye facing at a right angle towrds the direction of flow..Any other option may cause premature failure of the drainage piping
Blood flow doesn't change direction. They always head for the same direction.
Downward, Downriver, Downhill, the direction gravity pulls everything.
The direction of lymph flow is always towards the Thoracic Lymph duct .
Water is more affected by the surface geometry of the fixture than the hemisphere. Snopes gives a nicely detailed explanation at the link below of the urban legend that claims drains drain opposite on different sides of the equator.
These are machines dealing with fluids, like (Axial Compressors, pumps and Fans). the term "Axial" is given due to the direction of inward and outward flow. In axial turbo machines the direction of outward flow is the same as the direction of the inward flow since the blades of the machines doesn't change the direction of flow.