This pit takes ground water and moves it through a hose or a drainpipe to a site outside the crawl space or basement. It never, I repeat never ties into the sewage drain system of the house. The second is a lift station, and although it looks very similar to a sump pit it has a...
Here's the problem anti-siphon valves solve: Let's say you take your garden hose and you stick it in the 300-gallon aquarium you have in your upstairs bedroom to fill the aquarium. When you turn on the water, you fill the hose with water. As the aquarium fills, the end of the hos...