Water hammer from my check valve

[ReefJunkie]

Maybe a pic will help...Anything wrong with this setup?

[mike31154]

From what I've seen on these boards most people plumb without a check valve since they're prone to failure. They plan their sump configuration to handle the extra water from the overflow and piping when the pump is shut off or if there is a power failure. Again, this is what I've seen in other threads, not my experience since I'm currently running a sumpless system.

[whatcaneyedo]

Originally Posted by mike31154

From what I've seen on these boards most people plumb without a check valve since they're prone to failure. They plan their sump configuration to handle the extra water from the overflow and piping when the pump is shut off or if there is a power failure. Again, this is what I've seen in other threads, not my experience since I'm currently running a sumpless system.

+1 Good advice.

[ReefJunkie]

Originally Posted by mike31154

From what I've seen on these boards most people plumb without a check valve since they're prone to failure. They plan their sump configuration to handle the extra water from the overflow and piping when the pump is shut off or if there is a power failure. Again, this is what I've seen in other threads, not my experience since I'm currently running a sumpless system.

OK I realized this a long time ago...kinda obvious, but I am not going to drain my tank, take it off the stand, pull the sump out, build another bigger sump.......

whatcaneyedo;471312]+1 Good advice.

+1 ?? thanks for the help

[mike31154]

Originally Posted by ReefJunkie

OK I realized this a long time ago...kinda obvious, but I am not going to drain my tank, take it off the stand, pull the sump out, build another bigger sump.......


+1 ?? thanks for the help

My apologies, I didn't see anywhere previous in the thread where you mentioned that it was not feasible to run without the check valve due to your current sump size.

[ReefJunkie]

No apologies necessary. My fault for lack of information.
You are totally right whatcaneyedo my mistakes in the start are a pain in the a$$ now and I will have to break it down and do it right, but it has to wait till after the holidays at least. For now...band aid.

[ReefJunkie]

OK you guys got me thinking, maybe I could go with no check valve if I can reduce the amount of water backflow into the sump by raising my return outlets...hmmm

[ScubaSteve]

Ok, a couple things that might help here:

a) Check the orientation of your check valve. Depending on the type of check valve you have in there it it might have to be mounted horizontally (ie. swing-type check valve). I see a vertically mounted check valve, so look into that.

b) You can by non-water hammer check valves. Google it, buy it, put it in, Bob's your Uncle.

c)Failing all of that, mount the check valve horizontally and put an expansion chamber before the valve. Don't go and buy one, just make if from some PVC. Again, google has some good info on how to do this. It's an easy operation.

That's all I've got for useful tips. Soon I might have to join the "You should have just plumbed without..." group .... Just kidding!

Let us know how it goes and let's see if we can't fix this.

[ReefJunkie]

Thanks for the suggestions Steve!! The check valve is a swing type and says it can be used vertically but maybe that is the problem. I will try this horizontally as I am re-doing my plumbing for a new pump anyway.

[whatcaneyedo]

Would anti-siphon holes drilled in the plumbing just below the water level line in your tank work to stop your system from completely draining into the sump in the event that your return pump stops running?

Thats all I've got to offer. I dont believe in band-aid solutions in any situation. Fix the underlying problem then you and your tank will always be much better off for it.