Water hammer from my check valve

[KrazyKuch]

Here is the type of Check Valve I use this


I have it mounted horizontally and it works perfect........I needed one cause Having anti syphon holes on a dart with a single outlet would spray water all over the place and when I placed them lower in the water then my sump would overflow so I had to go with a check valve.

[ReefJunkie]

Thanks for the info Kevin....as far as this problem goes it's on the back shelf now since I just cracked my sump!

[Lampshade]

As a quick fix.. you could change out the elbow above the checkvalve for a Tee, and put an arrestor above it. if you really want a quick fix you could even just drill and fill it in. Any building supply store generally has them, they're used for basement faucets, toilets, washing machines, stuff like that. They come brass or plastic, washing machine ones are generally plastic, and only run you about $20-$30 (yeah a lot for a chuck of plastic with an air cushion behind it). Also noticed the double elbows for what looks like power cord access, this could be the main problem of the water hammer, if you take that out while fixing your sump just throw a flexi pipe for the corner and you might dodge the problem completely. Anyways, good luck with the sump

[Marlin65]

Originally Posted by KrazyKuch

Here is the type of Check Valve I use this


I have it mounted horizontally and it works perfect........I needed one cause Having anti syphon holes on a dart with a single outlet would spray water all over the place and when I placed them lower in the water then my sump would overflow so I had to go with a check valve.

I use this check valve as well and mine hammers right now. It did not on my other tank though. It must be a plumbing problem I made the return higher in the tank with a flex line so it only hammers for a bit now untill the water drops.