Step 1: Take a photo of the shower valve.
A photo of your shower valve will help us identify the make and model in most cases.
Success rate: Good
Step 2: Take another photo with cover/knobs off.
Sometimes, seeing a front view of the internals can be adequate to identify the parts.
Success rate: Better
Step 3: Take a photo of the part in question.
For best results, please remove the shower or tap cartridge and send those images to us.
Success rate: Best