Hi all, my first post on this forum. My stepdaughter had work done on her house recently, including some bathroom remodeling. One tub has very low water pressure at both the shower head and faucet. I suspect there is debris in the cartridge but I'm not sure how it comes apart. I've looked at videos of other valves, but this one looks different. Not sure of the brand, but am attaching a pic. Any suggestions are appreciated.
Keith
Keith