Came out for a customer supplied garbage disposal. They also mentioned they were getting a sewer smell randomly at the sink. Found this was due to the drain being s trapped under the sink. Tested water pressure as part of standard home inspection, found water pressure was at 150 psi. We replaced PRV in may of 2024, but it was out of warranty. PRV failed due to excessively high pressure from the city. Recommended we replace PRV but also install high pressure PRV prior to the standard regulator to ensure this does not happen again. Replaced garbage disposal and tested to ensure proper function and a leak free install. Drilled drain out of fitting flush with the wall. Repiped without the s trap. Installed new p trap. No further issue at this time.
