If your pipes continue banging despite having water hammer arrestors installed, it is typically caused by one of several mechanical failures. First, the internal mechanical piston or bladder inside the arrestor may have failed or become waterlogged, rendering it useless. Second, the arrestor may be installed too far away from the fast-closing valve to absorb the shock wave effectively. Finally, the banging may actually be caused by loose supply pipes vibrating against wooden framing studs rather than hydraulic shock. Verification: Inspect pipe mounting straps and test arrestor functionality.
1 votes
Marked as accepted