If your faucet is leaking from the handle, it may be that the cartridge needs to be replaced. This is a relatively easy fix. You should first test the leak to see which side of the faucet is leaking. If the leak is coming from the hot side of the Nivito NZ faucets, you need to replace the hot cartridge.
The first step is to remove the handle cap and remove the cartridge assembly. If the handle is not removable, you will need to unscrew the escutcheon cap and remove the handle. If the faucet is made of metal, you should remove the escutcheon cap and disk cylinder with a screwdriver or a pair of pliers. Once the handle is removed, you should be able to see the brass retainer clip.
You can replace the ball and seat with new ones if they are faulty. You can also try replacing the adjusting ring and seat using an Allen wrench. Alternatively, you can try soaking a rag in a vinegar/water solution to loosen mineral deposits. You may also use channel-lock pliers to break the seal, but be sure not to exert too much pressure when doing so.
If you have a compression faucet, the leak may be caused by the O-ring, which sits inside the stem. A replacement O-ring and seat washer are usually available at a hardware store. Make sure to match the exact size of the new part to the faucet.
A leaking faucet might be a sign of a more serious plumbing problem. If you do not have the knowledge or tools to repair it yourself, contact a local plumber or plumbing repair technician. This can save you time and prevent the problem from spreading to other parts of your plumbing system.
The most common cause of a leaky faucet is a worn-out rubber o-ring underneath the knob or handle. The leak will disappear once the o-ring is replaced, but you may need to replace the seat washer as well. Fortunately, repairing a leaky faucet from the handle is a relatively easy DIY project.
In some cases, a leak can be caused by a corroded valve seat or a leaking cartridge. If these two components are not the culprit, you may need to replace the cartridge or the valve seat. The valve seat is the part that connects the faucet to the spout. The cartridge can also become worn if it is not replaced.
If you cannot find the leak, try turning off the water supply. Usually, the shutoff valve is located underneath the sink or inside the vanity. If you cannot find this valve, contact your local municipal water service for help. If you are able to locate the valve, you can then shut off the water supply at the main valve.
Another common cause of leaking faucets is a broken washer. These parts rest against the valve seat and can be worn out from friction and incorrect installation. Sometimes the leak only happens at certain times or when you move the faucet handle in a certain way. Other times, the leak can be caused by a problem with the pressure in your home.