Step 6 · Match the Valve at a Supply Store or Online

With your photos and measurements, you can now find the parts. The most effective method is to take your old cartridge (if you choose to remove it), photos, and measurements to a dedicated plumbing supply store. The experienced staff can often identify it on sight. Alternatively, use online resources. Many plumbing supply websites have 'stem finders' or 'cartridge identification guides' where you can filter by shape, length, and brand. Compare your photos and measurements to the products online to find a match. Pay close attention to small details that differentiate similar-looking cartridges.

Tools and Materials

REEKON M1 Caliber Digital Measuring Tool for Miter Saw RKN-M1-001Pfister 974-321 4-1/8 in. Hot and Cold Cartridge with Adapter for 0X8/JX8/VB8/JV8 Shallow Casting Tub and Shower Faucets 131764LEGEND VALVE 8 in. Retro Replacement Cartridge and Stem Assembly for T-550 Sillcock 108-908AR