Step 4 · Inspect Valve and Cartridge for Markings
Now that the valve body is exposed, you can begin the identification process. First, inspect the valve body for any markings. Look for a brand name (e.g., MOEN, DELTA, KOHLER, PRICE PFISTER) or a logo cast directly into the brass body. Also, look for any series of numbers or letters, which could be a part number or model number. Next, examine the cartridge—the part the handle connected to. The cartridge's shape, color, and size are key identifiers. Some cartridges have part numbers stamped on them. Pay close attention to how the cartridge is held in place. Is it a U-shaped clip, a threaded bonnet nut, or screws? This mounting method is a major clue to the brand and model.