Hydrostatic loop

A hydrostatic loop, though not often used in plumbing practice, is an arrangement of pipes formed into a vertical loop to prevent backflow of water within the plumbing potable water system.

Since a siphon has a maximum height that it can work (about 33 feet), a hydrostatic loop is built higher than 33 feet.

There are several ways to prevent siphonage and an undesirable backflow of the water in a plumbing system.

This water supply–related article is a stub.

You can help Wikipedia by expanding it.