The topic of incoming higher water PSI, is so critical for everyone who owns or rents a home. The reason being is because ignoring the issue if it exist, it'll become a constant waste of money that can be allocated in other areas, instead of fixing problems caused by high incoming water PSI. I'll share an example with you that illustrates this problem. Few years ago, I did a service call for AHS in San Mateo Hills, it was a water heater leaking call. The water heater unit was only 3 years old, and I discovered that the incoming PSI was over 110 which was 30+ above the legal PSI limit of 80. I had to disclosed to the home warranty company the reason why, the water heater was already leaking few years before the manufacturer's warranty expired! The reason was that this particular home didn't have a "PRV" valve, (pressure regulator valve) installed before the main shutoff valve. The owner of this particular house didn't know that because he lived in a higher elevation, water had to be pumped with a higher PSI, and unfortunately he purchased that house without a PRV valve that would regulate the incoming water at 70 PSI, which is a great safe pressure for the entire plumbing system. He's home warranty company denied him to replace the water heater because by code, a "PRV" valve had to be installed in system to protect it from higher incoming PSI. He was so upset with AHS because he had to paid out of pocket, the installation of a new water heater plus install a PRV valve in order to avoid the same problem in the near future. The problem of higher "PSI" isn't caused ONLY by elevation, it also exist when a house is in a close proximity to a water hydrant! The coming PSI into a house should be no higher than 70, or it will be the cause of extra wear-and-tear to the fill valves in most of the toilets, which in time end-up leaking hundreds upon hundreds of gallons of undetected water, that will showed up when the water bill comes in the mailbox. If your house has PEX (plastic) instead of copper piping for the water system, the risk of having water leaks will increase with higher PSI, so make sure that the incoming water PSI is set no higher than 70 PSI. Water hammer arrestors should also be installed in the system, to kill the knocking noise made by the water when a faucet is closed-up. Also if a PRV valve is already installed, a thermal expansion tank MUST be installed into the water system; in order for the extra pressure to be absorbed! Why? Because the PRV valve also acts as a Check Valve which traps additional pressure into the system.....
The following information below, explains how you'll be able to detect if there's a small or big water leak on the system.
ATTENTION THIS IS A COMMUNITY UPDATE. 5/11/2018 somewhere in Northern California.
Early in the morning I went to see a job about a water leak, what I found was a camouflaged water leak created by a new digital water meter!. The new water bill was $949 dollars that this new digital water meter is claiming, that needs to be paid in water consumption for 60 days. Can you see that there's no flow indicator on this new Digital meters? If the numbers don't move? There's no leak! Why then a bill for $949 dollars of 60 days of water service from your local city? Perhaps this is just a tech-mistake made by the system. So if you get a super BIG water bill, you'll have a real idea why?
YOU'RE NOW ARMED WITH SUPERIOR KNOWLEDGE ON THE SUBJECT OF PSI. Please share it!
I started my plumbing career back in 1999, installing water heaters across the bay area. Without a doubt the plumbing trade is the most challenging one of all trades, because to be good at it common sense is a must; plus logic and a bit of patience coupled with a lot of knowledge, will fix all kinds of plumbing issues. I believe that I will revolutionize just few aspects of this amazing trade, all I need is to have more MULA!
Michael Angelo Alonzo