mixing

Hi folks, I have a single shower mixing valve that doesn't mix any longer. I've removed the cartridge but can't identify it. Been to 2 plumbing supply stores and no luck there either. Going through previous posts, it looks like a Sayco or a Aquabrass cartridge to me but I'm not sure and I...

Hi folks, I have a single shower mixing valve that doesn't mix any longer. I've removed the cartridge but can't identify it. Been to 2 plumbing supply stores and no luck there either. Going through previous posts, it looks like a Sayco or a Aquabrass cartridge to me but I'm not sure and I...