A water hammer hydraulic shock wave itself is instantaneous, lasting only a fraction of a second (milliseconds) the exact moment a valve or appliance shuts off abruptly. However, the resulting physical banging, rattling, and hammering noise can echo through your home's framing for several seconds as the shock wave reverberates back and forth through the rigid metal or plastic supply piping network. Left unaddressed, these repetitive shock impacts will eventually crack pipe joints and loosen fittings. Verification: Install water hammer arrestors to absorb and neutralize hydraulic shock instantly.
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