DIYbanter - View Single Post

wrote:
... What's the point to that injector
other than being another part to buy and another possible leak? The
point is to fill the tub, and its filling 5 times as fast without that
part. I simply do not see the purpose to it.

The injector prevents siphoning that can cause contaminated wash water
to backflow to the water supply in case pressure is lost. It also
ensures that the flow stops immediately when the fill valve shuts off.
Otherwise water in the fill hose could provide sufficient siphon
pressure to prevent the valve from closing completely.