I recently had my sump pump replaced with a bigger basin, a bigger 2" outlet between the inner-basement and outer wall of the house (whereby it then goes down into the ground about 2' and then gets drained out into the street).
Everything had been perfectly fine for the entire week or so that it had been installed but just tonight I noticed a constant banging noise... Thinking that the check valve was broken, I unplugged the entire pump thinking that I would look into the check valve to dislodge anything that might've been stuck in it... That's when I noticed that the banging continued!
So the pump pumps the water out of the basin up about 3.5 to 4.5 feet, goes out into the crawlspace, dips down about 1/2', then up another 1/2 (to go under duct-work), then down into the ground and out to the street. I'm inclined to believe that this needs another check valve that is close to the secondary sump dip that the up-and-down piping causes but I thought I'd ask here to see what you guys think?
I crawled underneath the home to see what's causing this and the pipe is basically banging against the duct lead from the central air unit but it's the motion of the 2" PVC that's only a symptom of a bigger issue here. I think I can probably do some stuff to eliminate the banging itself but I'd prefer to understand and fix the actual problem (and not the symptom) that is causing the pipes to hammer the way they are.
Any insight into this would be appreciated. The sump works perfectly fine--it's brand new--but I think this is more of a physics issue at this point that can only be fixed by eliminating that secondary sump-like location in the pipes via another check valve, right?
Everything had been perfectly fine for the entire week or so that it had been installed but just tonight I noticed a constant banging noise... Thinking that the check valve was broken, I unplugged the entire pump thinking that I would look into the check valve to dislodge anything that might've been stuck in it... That's when I noticed that the banging continued!
So the pump pumps the water out of the basin up about 3.5 to 4.5 feet, goes out into the crawlspace, dips down about 1/2', then up another 1/2 (to go under duct-work), then down into the ground and out to the street. I'm inclined to believe that this needs another check valve that is close to the secondary sump dip that the up-and-down piping causes but I thought I'd ask here to see what you guys think?
I crawled underneath the home to see what's causing this and the pipe is basically banging against the duct lead from the central air unit but it's the motion of the 2" PVC that's only a symptom of a bigger issue here. I think I can probably do some stuff to eliminate the banging itself but I'd prefer to understand and fix the actual problem (and not the symptom) that is causing the pipes to hammer the way they are.
Any insight into this would be appreciated. The sump works perfectly fine--it's brand new--but I think this is more of a physics issue at this point that can only be fixed by eliminating that secondary sump-like location in the pipes via another check valve, right?
