I have a very old bath tub with a very unique "Speakman" one handle externally wall mounted mixing valve set up. It has a cold/hot supply and one supply to the shower head. I currently use two shutoff valves to manage the shower and hot/cold water rather then the mixing valve. The mixing valve allows water through but it leaks when I move it towards the hot setting. I've tried to take it apart to have the seats replaced and even had a local plumbing specialist try without success. I really just want to purchase a new one. But I can not find anywhere in the US where I can buy a externally mounted mixing valve. Anyone know of where I can find one?
Also, I have a clean out on the floor, any idea how to get this open with out stripping the hex head?