I have a Delta single handle kitchen faucet that has a diamond valve cartridge. To turn off the water the handle has to be shoved to the side and back. If I turn it off to the normal position it will drip.
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can be a number of issues: clogged aerator, water supply is turned off, or supply lines are kinked, debris behind cartridge blocking flow, rubber seats out of place.... What has changed to cause problems?
i forget what the piece is called exactly but if you go to home depot or lowes or where ever and give them the type style and brand of your faucet and tell them what it's doing they will set you up with the new part. it's sort of a core type piece with rubber o-rings on it
Yes, debris from water heater replacements often breaks lose and gets stuck. The problem could potentially be anywhere between water heater and the faucet. The faucets shut off valves or the Delta faucet cartridge itself. Turn the hot and cold water valves off under the sink and disconnect the water supply lines from the faucet. aim the water supply lines into a bucket and turn the valves on one at a time. If there is a significant reduction in the water pressure and volume on the hot water side, you need to replace the shut off valve. If there is no reduction in water pressure, you need to clean and/or replace the Delta faucet cartridge. Contact Delta to receive free replacement parts.
there is likely sediment under the spring and washer on the hot water side of the faucet under the handle. If you shut off the valves to the faucet, it is very easy to dismantle. There is an allen screw on the front of the handle to remove the handle. Under the handle there is a nut. Once you unscrew this nut there is either a ball or a cartridge )depending on the year of the faucet) that can be removed If it is the ball, then you will see two rubber washers in the base. Use your allen wrench or needle nose pliers to remove the washers and remove any sediment.
Debris in the valve is a fairly common cause for stopping water flow in single lever valves. You can first check the aereator and remove any debris that may be there at the faucet itself. Then you can try to remove the ball at the control lever. You have to be careful and make sure that you do not drop any parts. Especially if this is a recent installation, you may find a large piece of something there.
First try this. Pull out the sprayer and remove from hose by turning nut that connects sprayer to hose. If you can get someone to help you it would be nice since the hose can go down into the faucet and might be trouble to retrieve. Look in the connection on the sprayer where the hose connects and look at the screen. If the screen is plugged or dirty clean and reinsert. If you can't clean it replace it. If this isn't working go to the next suggestion below.
In the spray head of the faucet there is a build up of deposits from use and or water hardness. Here is the link to the Delta site.