The expert's at JLC sent me here with this question!!!
Any Idea how to stop water hammer from a sump pump? It has 1 1/2" ABS that runs from the sump throough the floor trusses and terminates outside.
On Wednesday the plumber took out the check valve (only a 3/4" flapper) and the sound of 15' of 1 1/2" pipe draining back into the basket was louder than the hammer.
On Friday they put in a FULL 1 1/2" check valve and when the pump stoped it had a quiet "thump". Everyone thought that was OK.
Now, Monday the water hammer will last a good 6 or 7 seconds when it stops. NOT GOOD!
By the way, 2/3 of the pipe is in a finished ceiling.
Any Idea?
Any Idea how to stop water hammer from a sump pump? It has 1 1/2" ABS that runs from the sump throough the floor trusses and terminates outside.
On Wednesday the plumber took out the check valve (only a 3/4" flapper) and the sound of 15' of 1 1/2" pipe draining back into the basket was louder than the hammer.
On Friday they put in a FULL 1 1/2" check valve and when the pump stoped it had a quiet "thump". Everyone thought that was OK.
Now, Monday the water hammer will last a good 6 or 7 seconds when it stops. NOT GOOD!
By the way, 2/3 of the pipe is in a finished ceiling.
Any Idea?