How to Fix a Diaphragm Faucet | |
Some newer two-handle faucets have a rubber washer that looks like a diaphragm. It is not held in place by a screw but slips over the end of the stem. This type of washer will wear out because it is compressed against a valve seat to stop the water flow. Like standard washers after a while the washer wears out and allows water to pass between it and the valve seat. If you see a screw in the end of the stem. Turn the water off from below the fixture or at the main shut off valve. 1. Remove screw cover and handle screw: There is usually a decorative cover in the center of the handle that hides the handle screw. Use a screwdriver to pry this cover off. Then remove the screw and handle. 2. Remove packing nut and stem: Use an adjustable wrench or a channel lock pliers to remove the large packing nut (turn it counter clockwise) at the top of the faucet body. Then twist out (counter clockwise) the valve stem. If it is stuck, put the handle back on to give you a better grip on the stem. 3. Replace diaphragm: Look at the end of the stem that fits into the faucet. If no screw is visible take the stem and washer to your local hardware store or home center and purchase a replacement diaphragm. Replace the diaphragm by slipping it over the stem end. Check that there are no dirt or particles between the rubber and the end of the stem. Rub some petroleum jelly or light grease on the stem threads and screw the stem into the faucet body. Replace the packing nut and handle. Turn on the water and test. If the water still leaks, the valve seat needs to be refaced. This is not difficult but you need a special tool, so consult a plumbing manual or seek professional help. Written by the editors of HouseNet Copyright HouseNet, Inc. |