Thank you for your question, and I am sorry to hear that you are experiencing a leak from your Delta faucet. If the Delta 2256-DST faucet is leaking/dripping, we do recommend to replace the valve cartridge assembly. This part number is RP60400. To replace these parts, first turn the water off at your shut off valves. Remove the handles with a 1/8" allen wrench. Unscrew the bonnet nuts counterclockwise. Pull the cartridges straight out. Reinstall new cartridges. If this does not fix the issue, please contact us back.
Date published: 2018-10-24