At my home, I assume as it is in most homes, we have one regulator on the water mains. However, if we take two showers at the same time, the water pressure is low in both showers. It's not bad, it's just aggravating. We have plenty of water pressure from the city.
When I first started writing this post, my question was whether it made sense to have the incoming mains branch to two water regulators instead of feeding two showers off of one regulator. Now I'm wondering whether the regulator is just not doing its job. It's doing its job to keep the water pressure at a normal level for a single shower or for sink water, but it's not maintaining the water pressure with the demand of two showers. It's been that way since we've owned the house for 25 years.
I'd hate to replace it only to find that it's working as it should. Any thoughts?