A leaking sink handle can be a frustrating and wasteful plumbing issue. It is not only an annoyance but can also lead to water damage and increase your water bill. However, before you call a plumber and spend money on repairs, there are some steps you can take to try and fix the problem yourself. In this article, we will discuss common causes of a leaking sink handle and provide guidance on how you can repair it.
Common Causes of a Leaking Sink Handle
1. Worn Out O-Ring
The first potential cause of a leaking sink handle is a worn-out O-ring. An O-ring is a small rubber ring that helps create a watertight seal between the handle and the base of the faucet. Over time, the O-ring can wear out, leading to leaks. This is a relatively common issue, especially in older faucets.
2. Loose Packing Nut
Another cause of a leaking sink handle could be a loose packing nut. The packing nut is located just under the handle of the faucet and is responsible for holding the stem and handle assembly together. If the packing nut is loose, it can allow water to leak out from around the handle.
3. Damaged Valve Seat
A damaged valve seat can also cause a leaking sink handle. The valve seat is the connection point between the faucet and the spout. Over time, mineral deposits or corrosion can cause the valve seat to become damaged or uneven. This can result in leaks when the handle is turned on.
Repairing a Leaking Sink Handle
1. Turn Off the Water Supply
Before you attempt any repairs, it is crucial to turn off the water supply to the sink. This can usually be done by closing the shut-off valves located under the sink. Turning off the water supply will prevent any further leaks and ensure your safety during the repair process.
2. Disassemble the Faucet Handle
Carefully remove the handle of the faucet by unscrewing the set screw located on the underside of the handle. Once the set screw is removed, you should be able to lift off the handle, revealing the internal components.
3. Inspect and Replace the O-Ring
Inspect the existing O-ring for any signs of wear or damage. If it appears worn out, remove it and replace it with a new one of the same size and shape. Apply a thin layer of plumber’s grease to the new O-ring to ensure a proper seal.
4. Tighten the Packing Nut
Check the tightness of the packing nut by using an adjustable wrench. If it is loose, tighten it until it is snug but be careful not to overtighten it, as this could damage the faucet. Once tightened, reassemble the handle and test for any leaks.
5. Replace the Valve Seat
If after replacing the O-ring and tightening the packing nut, the sink handle still leaks, the valve seat may be the culprit. To replace it, you will need to use a valve seat wrench to remove the old seat and install a new one. This can be a more challenging repair, and if you are unsure, it may be best to consult a professional plumber.
A leaking sink handle is a common plumbing issue that can often be repaired without the need for a professional plumber. By understanding the common causes of the problem and following the steps outlined in this article, you should be able to fix the issue with relative ease. However, if you are uncomfortable or unable to perform the repairs, it is always advisable to seek the assistance of a professional to ensure the problem is resolved effectively.