check valve failed......

[saltydude]

I have read that checkvalves eventually fail and experienced this myself. I decided to eliminate the checkvalves all together and keep my sump filled to a certain level so it will not overflow. Works great and is quiet as it backfills. check valves were noisey..thump thump thump.
Any horror stories of your own to share?

[fishysteve]

They get too cruded up to work well unless you clean them very often. Siphon breaks in the return lines work better and are easlier to keep clean.