A loud bang when an irrigation zone starts or shuts off is often described as water hammer. It happens when moving water changes velocity quickly and creates a pressure wave in the piping.
Why irrigation systems can create water hammer
Electric valves can open and close relatively quickly. High supply pressure, long pipe runs, or certain plumbing layouts can make the resulting pressure change more noticeable.
Do not assume the sprinkler head is the cause
The sound may travel through the house plumbing even though the irrigation valve outside triggered it. Diagnosis should consider the irrigation shutoff, backflow assembly, valves, and supply plumbing.
Why repeated hammering matters
Severe pressure shock is worth investigating because it can stress fittings and valves. The correct remedy depends on the actual source rather than simply replacing sprinkler heads.
For irrigation valve and pressure troubleshooting in Bloomfield Hills and nearby communities, call or text (248) 970-0700.
Need Sprinkler Repair in Bloomfield Hills?
Call or text (248) 970-0700 for residential sprinkler troubleshooting and repair. Explore our sprinkler repair services, winterization service, or return to the Sprinkler Repair Resource Center.