A flow in a direction contrary to the intended normal direction of flow.
Any molten plastic flowing out of an injection mold out of the mold through the nozzles into the runners leading to the molds. Most injection molding machines incorporate one way check valve in their nozzles to prevent backflow from occuring.
Water that flows back to the distribution system. It is sometimes caused by a loss of pressure in the water system.
a flow that returns toward its source
water which drains back, or is sucked back from irrigation lines. Contamination of this water by insecticides, herbicides, fungicides, fertilizers, and bacteria is possible.
a flowing back or return of water to its source (well or pond).
Also called back siphonage, a reverse flow in water pipes. A difference in water pressures pulls water from sources other than the well into a home's water system. For example, waste water or flood water.
Movement of water (or other liquid) in any direction other than that intended.
When water traveling from one device backs into any part of the main water supply, usually caused by siphoning.
A condition caused by a difference in pressure in which air will flow back into the distribution pipes rather than in the intended direction.
A reverse flow condition created by a difference in water pressures that causes water to flow back into the distribution pipes of a drinking water supply from any source other than the intended one.
The flow of a liquid by siphon pressure or gravity back to its source.
Abnormal backup of water in the opposite direction of normal flow in a pipe.
Water reversing its flow to return back to the supply system rather than flowing to the intended point.
Situation whereby contaminants may be drawn back into the public water supply due to a change in pressure or a cross connection of water sources.
When water traveling from one system backs into any part of the main distribution system, usually by siphoning.
The backing up of water through a pipe in the direction opposite to normal flow.
An undesired reversal of the flow of water in a piping system.
Backflow is the flow of water or other liquids, mixtures, or subsatnaces into the distributing pipes of a potable supply of water from any sources other than its intended source.
The undesirable reversal of flow of water or mixtures of water and other liquids, gases, or other substances into the distribution pipes of the potable water supply from any source. Category: Public Works
The unwanted reverse flow of liquids in a piping system.
The flow of water or other liquids, mixtures, or substances into the distributing pipes of a potable supply of water from any source or sources other than its intended source. (2)
The back-pressure of water in a pipe in the opposite direction to normal flow.
The unintentional flow of water into the supply pipes of a plumbing system from a non-supply source; back-siphonage is one type of backflow, generally due to a temporary occurrence of negative pressure (suction) in the pipes.
The flow of water in a pipe or line in a direction opposite to the normal flow.
A reverse flow condition, created by a difference in water pressures, which causes water to flow back into the distribution pipes of a potable water supply from any source or sources other than an intended source.
The flow of water or other liquids, mixtures, or substances into the distributing pipes of a potable water supply from any source or sources other than the intended source. Back siphonage is one type of backflow.
Flow of water in a pipe or line in a direction opposite to normal flow. Often associated with back siphonage or the flow of possibly contaminated water into a potable water system.