Where do you find schematic of WATER pressure regulator?

You can find schematics for water pressure regulators in several places, including the manufacturer's website, which often provides technical documents and installation guides. Additionally, Plumbing supply stores may have manuals or diagrams available. Online forums and DIY websites can also be valuable resources for user-contributed schematics and troubleshooting advice. Lastly, some plumbing textbooks or guides may include detailed diagrams for various types of pressure regulators.