The cartridge in the valve for my shower has started to leak. I am looking to replace it, but I can't identify the part # or manufacturer. I do not see any distinguishing marks/logos/names on any of the cartridge, or on the trim either. I sent emails to Delta & American Standard, and their customer service says this is not one of their products. The house was built in 2001, and I assume this unit was installed at that time. The valve is for a tub spout and shower head, and controls both temperature and water volume. I have been to my local home improvement stores, and they do not have anything close to the cartridge in my unit.
