Repair delta faucet

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How to Repair a Leaky Delta Faucet


  • New rubber seat and spring (one set for each handle)
  • Plumber's grease
  • Replacement stem (as needed)
  1. Remove the Faucet Handle

    Loosen the faucet handle, using either a screwdriver to remove the screw on top of the handle or an Allen wrench to remove a setscrew on the side of the handle. Lift the handle straight up to remove it from the faucet stem.


    You may need to remove a decorative cap from the top of the handle to access the handle screw.

  2. Remove the Bonnet Nut

    Loosen the bonnet nut securing the faucet stem. Use tongue-and-groove pliers or an adjustable wrench to turn the nut counterclockwise. Unthread the nut completely and remove it from the stem.

  3. Remove the Stem

    Note the position of the stem before removing it. You must reinstall it in exactly the same position for the faucet to work properly. Stems usually have one or more tabs that fit into notches in the stem housing to help you align the stem, but you can still get the stem backward. It might be helpful to take a photo of the stem for reference.

    Remove the stem by pulling it straight up and out of its housing. Use pliers, if necessary, gripping just the spindle at the top of the stem.

  4. Remove the Valve Seat and Spring

    Look inside the stem housing and locate the neoprene valve seat in a hole at the bottom of the faucet housing. The valve seat is a small, black, rubber cap with a hole in the top. Sitting inside and below the seat is a small metal spring. Remove the seat and spring by inserting a small screwdriver or Allen wrench into the hole of the seat and pulling up both parts together.

    Note the spring's orientation inside the valve seat. The spring should be slightly larger in diameter at the bottom than at the top—where it fits into the seat. You must install the new spring and seat with the same orientation.

  5. Install a New Seat and Spring

    Fit the new seat and spring onto the end of a screwdriver or Allen wrench in the same position as the original seat and spring. Use the screwdriver or wrench to guide the spring and seat into the hole in the stem housing. They must fit all the way down into the hole. Remove the screwdriver or wrench and confirm the valve seat is positioned properly.

  6. Reinstall the Stem

    Apply a small amount of plumber's grease to the O-ring at the base of the valve stem. If desired, you can also replace the O-ring (which is sometimes included with stem-and-spring kits) or the entire stem. Fit the stem into its housing, aligning the tabs on the stem with the slots in the housing. Push the stem all the way down until it stops.

    Reinstall the bonnet nut and tighten it carefully with pliers or an adjustable wrench. Do not overtighten the nut, which can damage the stem housing.

  7. Check for Leaking and Reinstall the Handle

    Turn the water supply back on by opening the shutoff valve (under the sink) counterclockwise all the way until it stops or by turning the water back on at the main. Check for leaks around the faucet stem. If it leaks, tighten the bonnet nut until the leaking stops; again, be careful not to overtighten.

    Fit the handle onto the stem and secure it with the screw or setscrew.


How to Fix a Leaky Faucet

Delta Bathroom Faucet Leaks-A Simple Fix in Less Than 5 Minutes

Wanna learn how to fix a leaky faucet? Specifically a leaky Delta faucet? You’re in the right place.

A bathroom faucet leak can be one of the most frustrating things about being a homeowner. But don’t fear this common problem.

You can do this fix yourself and save your money for the movies instead.

Let’s dive in!


Getting Started with Leaky Faucets

This post deals with repairing a Delta bath sink two-handle center-set faucet. If that isn’t a mouthful I really don’t know what is. The faucet in question is in the picture.

This small quick project requires the following supplies:

If you have all of these tools or can borrow them the cost for the Delta replacement parts is under $20.00.

I’m sharing this tutorial because I’ve had to do this repair many times and discovered a few tips that will help you make it quick and painless. Plus, there’s a video for your viewing enjoyment. Don’t bother grabbing popcorn, it’s only 3 minutes long (tight budget, haha).

So let’s do it!

Determine How to Fix a Leaky Faucet…

The first step is to identify the type of faucet you have. In this case, I’m repairing a bathroom sink two-handle center-set faucet.

Then you’ll need to determine the area of the faucet that is leaking.

Is the leak coming from under the Delta bathroom faucet handle or is the leak coming from the aerator?

I knew the leak was coming from the aerator because I saw it first thing in the morning when I shuffled into the bathroom to begin my day. The pop-up stopper was always wet which indicated a persistent drip.

Turn the hot water shutoff valve under the sink to the off position (completely to the right). Check to see if the leak is still there. If the leak is gone you know the hot water side of the faucet is the culprit.

If the drip persists then you know the cold water side of the faucet is to blame.

You can also follow this flow chart to figure out HOW to fix the Delta bathroom faucet leak.


Delta Bathroom Faucet Repair Flow Chart

(A special thanks to Powell Svendsen for pointing out an error on the first version of my flow chart :))


Using a Delta Bathroom Faucet Repair Kit

Before you do anything make sure the water is turned off to the faucet. You’ll only have to shut off the water to the corresponding handle that was causing the drip.

As promised, here’s the video that walks you through this entire fix but you can also view the pictures below if you prefer that instead.

To access the Delta faucet cartridge and seats & springs you’ll have to remove the faucet handle & body.

Unscrew the delta faucet handle by hand and use an Allen wrench to loosen the set screw that holds the handle body in place.

Then remove the faucet handle body and set it aside.


Delta Bathroom Faucet Leaks-Unscrew the faucet handle


Delta Bathroom Faucet Leaks-Remove the faucet handle body

Unscrew the stem unit nut with channel locks.

And take a picture of the stem unit before you remove it with the channel locks.

Believe it or not, there is a proper way to reinstall it and a picture comes in handy.


Delta Bathroom Faucet Leaks-Loosen the stem unit nut with channel locks

Remove the old delta faucet cartridge with channel locks or needle-nose pliers.

Delta Bathroom Faucet Leaks-Remove the old cartridge with pliers

If you need to replace the little rubber seat and metal spring you can use needle-nose pliers to do so. I tried using my wife’s tweezers but they didn’t work (don’t tell her, she wouldn’t be happy).

Delta Bathroom Faucet Leaks-Extract the old seat and spring

I always put the new seat and spring down into the faucet together as one unit. Just make sure they’re oriented like in the picture below with the wider side of the spring facing down into the faucet.

Delta Bathroom Faucet Leaks-Make sure the wider side of the spring faces down

Finally, firmly press the seat & spring into the faucet. If you need to replace the cartridge because you had a drip coming from the aerator go ahead and do that now following the tips in my video.

As an FYI, one of my readers (Powell Svendsen) was able to clean the O-rings on the cartridge and eliminate a leak coming from the aerator. So you could give this a try before buying a new cartridge unit.

Thanks, Powell for sharing your great tip!!

Screw the stem unit lock nut onto the faucet base and put the Delta faucet handle back in place.

You’re done!!!


What’s Next

Very easy and you’ll save a call to the plumber.

Our other tutorial shares how to replace a bathroom faucet step-by-step.

Also, grab our free guide if you’re doing a DIY bathroom remodel – it shares how to remodel a bathroom in 10 days or less

Send Me The Guide



Jeff Patterson





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Delta Faucet Repair Tips

By Gary Sprague

Turn off water before making any faucet repair.

Delta specializes in kitchen and bath faucets of many different styles. Delta faucets are among the best and most popular faucets available. But no matter how good a faucet is, over time it will become worn and require some type of repair. Fixing a Delta faucet is quite easy in comparison with other brands and can often be completed by the homeowner. This ease of repair can save the homeowner an expensive service call to a plumber.

Turn Off Water Before Making Repairs

The first step in any faucet repair is to make sure that the hot and cold water supplies are turned off. If the pipes leading to the faucet do not have shutoff valves, you'll need to turn off the water at the water main.

Delta Faucet Repair Kit

Everything needed to repair most leaks on a Delta faucet comes in a simple kit. The Delta faucet repair kit contains seats, springs, O-rings, and other parts necessary to repair the inner workings of your Delta Faucet. It even comes with a special Allen wrench to loosen the handle screw. You can get the kit with or without a handle ball. You can purchase a Delta repair kit from any plumbing supply or big-box store for under $10.

Fix a Drip With Seats and Springs

If your Delta faucet has a steady drip, the seats and springs will need to be replaced. To access the seats, remove the handle, nut, and ball. Use an awl to make removing the seats less difficult. Slide it into the center of the seat and spring and pop it out. To install a new seat, slide the seat and spring onto the awl and drop it in place, using your finger to secure it.

Use Plumbers Grease on O-Rings

A leak at the base of the spout of a kitchen faucet requires removal of the spout to replace the underlying O-rings. To remove the spout, first remove the faucet handle and the nut beneath. The spout can then be lifted off. Before putting the spout back on, apply plumbers grease to the O-rings. This will enable the spout to slide on easily and prevent damage to the new O-rings. Trying to force the spout on can result in split or torn O-rings.

Watch for Spout Pitting

Delta kitchen faucet spouts can develop pitting and leaks over time. Pitting will show up as a small mark resembling a spot of rust or chipped chrome. The leak may start small, rolling down the spout and pooling at the base of the faucet, disguising the leak. Over time the leak will develop into a spray or stream. A pitted spout will need to be replaced. Before installing the new spout, be sure to apply plumbers grease to protect the O-rings.


Writer Bio

Gary Sprague is a master plumber with more than 25 years of experience. His articles have appeared in many online and print publications.

Delta Faucet Won't Stop Dripping/Leaking

Delta faucets aren’t prone to leaks, but there will come a time when you might deal with one. Unfortunately, calling a professional to fix it for you may be costly, but did you know that there are some fixes you can do to deal with it, and it won’t cost you anything?

To fix a Delta faucet that won’t stop leaking, you should first look for the model number. Delta offers a lifetime warranty on parts, and they’ll send you what you need. You can then disassemble the faucet with an adjustable wrench and Allen wrench and replace the seats and springs to fix the leak.

Stick around to learn how you can deal with Delta faucets leaking or dripping even if you shut it down completely. This article will help you understand the common causes and fixes you can do to deal with it.

Delta Faucet Keeps Dripping: Causes & How to Fix

Delta Faucet Keeps Dripping: Causes & How to Fix

Fixing Delta faucets are easy, as long as you meet the following:

  • You’re the original owner of the faucet.
  • You have the manual or know the model number.

Delta provides a lifetime warranty on all their parts, so having these two will make it easy for you to have what you need for the replacement. Describe where the leak is coming from, and they’ll send you the exact part you need to replace.

The only thing left for you to do is figure out how you can put it in place. Here’s how you can fix a dripping Delta faucet:

  1. Turn off the waterline, both hot and cold water valves.
  2. Remove the screw cover using a screwdriver.
  3. Insert a 1/8-inch (3.2-mm) Allen wrench into the hole to remove the handle.
  4. Remove the cap and ring, using two wrenches—one holding the bottom and the other turning the top counterclockwise.
  5. Remove the round metal stem and ball from the faucet.
  6. Use needle-nose pliers to remove the seats and springs—the parts that Delta sent you when you called them.
  7. Take note of the orientation of the springs, and place the new ones.
  8. Put everything back and make sure that you screw them tightly to prevent leaks. You can apply plumber’s grease onto the screws to make it easier for you to repair your faucet in the future.
  9. Turn the water lines on and test your faucet. If you do everything correctly, this process should fix a leaking Delta faucet.

Note: If you’re not the original owner or you don’t have the model number, you’ll have to take out the seats and springs first, then take it to a hardware store to find the parts that you need.

Delta Touch Faucet Keeps Dripping: Causes & How to Fix

Delta Touch Faucet Keeps Dripping: Causes & How to Fix

Delta Touch faucets are great, but over time, you’ll experience leaks with them. That’s because minerals tend to build up within the faucet, preventing the solenoid from shutting down completely. It’s easier to fix because you can remove, disassemble, and inspect if debris causes the issue.

There are two things you need to fix your Delta Touch faucet: air blower and vinegar. Once you remove the faucet, take it apart carefully and use an air blower to remove minerals that may prevent the solenoid from shutting down completely. You may also want to use vinegar for the parts because it’s an agent that can dissolve minerals within the faucet.

If this didn’t fix the leak, the last resort would be to call Delta to replace parts. Like always, you need to know the model number, and you have to be the original owner of the faucet. Sometimes, they’d even send you a new one instead of trying to repair your faucet.

Of course, calling Delta for a replacement is the ideal solution, but it doesn’t mean that you have to skip trying to repair your faucet. Although they’ll be quick to send you the parts you need for the repair, it will still take some time, and you may be wasting time unnecessarily for something that you can quickly fix.

Delta Shower Faucet Keeps Dripping: Causes & How to Fix

Delta Shower Faucet Keeps Dripping: Causes & How to Fix

The most common reason why a Delta shower faucet is leaking is because of the cartridge inside it. When it’s faulty, water will keep dripping even if you turn it off completely. To fix this, the first thing that you need to do is to figure out the part that you need to replace.

You can find many cartridges for replacement, but it’ll be much easier to refer to the manual to find the exact part you need to replace. You can also check Delta’s website to find the faucet that you have and see the cartridge that it uses. Finding the exact part that you need to repair your faucet is the hardest part when repairing; you can do the rest with a screwdriver and a bit of force.

Here’s how you can replace the cartridge of your leaking Delta shower faucet:

  1. Turn off the waterline before you start working on the faucet.
  2. Use a metal pry tool to remove the cover for the handle.
  3. Use a screwdriver to remove the screw that holds the handle into the faucet.
  4. Remove the handle and housing of the faucet.
  5. Use a strap wrench to remove the nut that holds the cartridge.
  6. Pull out the cartridge and replace it with the new one. Make sure that the cartridge matches the hot & cold section of the faucet. You’ll also notice little grooves on the cartridge side that will tell you whether you have correctly installed it.
  7. Put everything back and turn on the waterline. The whole process shouldn’t take long and will help you fix your leaking Delta shower faucet.

Note: If you’re not the original owner, you’d have to take the cartridge out before you can start looking for a replacement. You may have to take it to a hardware store, making the repair process a bit longer. Sometimes, you’ll need to order the parts online, which may take even longer.

Delta Kitchen Faucet Keeps Dripping: Causes & How to Fix

Delta Kitchen Faucet Keeps Dripping: Causes & How to Fix

If you’re having problems with a leaking Delta kitchen faucet, it’s most probably because of a faulty valve cartridge. It will be an easy fix for anyone, and you don’t have to pay for a plumber to get it done. The only thing you need to do is figure out the model number of the cartridge you need, and you can easily replace it on your own.

Here’s how you can remove the parts to replace the valve:

  1. Turn off the waterline before you start fixing a leaking Delta kitchen faucet.
  2. Use a metal pry tool to remove the handle cover.
  3. Use a 1/8-inch (3.2-mm) Allen wrench to remove the handle. You don’t have to completely take out the screw, just enough to loosen the handle and remove it.
  4. Use an adjustable wrench to remove the valve cartridge housing.
  5. Take out the cartridge and replace it with the new one. Pay attention to the orientation of the cartridge to make sure that you’re replacing it properly.
  6. Put everything back and turn your waterline back on.

Note: Repairing a leaking Delta kitchen faucet is very easy if you have the right tools and you know the model number of the one you have. Even if you’re not familiar with the model, the Delta website has a section that will help you find it and determine the type of cartridge you need for your faucet.

Final Thoughts

Delta is one of the best brands of faucets because of the exceptional customer support that they provide. They also offer a lifetime warranty on all parts, as long as you’re the original owner, making it so much easier to do the repairs on your own.

These repairs would usually cost a lot, but knowing the basic repair processes you can do will save you from all the troubles. Remember, repairing a leaking Delta faucet won’t cost you anything, and it won’t take long either.

Related Article

Delta Faucet Won’t Turn Off


Delta faucet repair

The strongest. Be patient, bitch. You swing and the strap flies between my legs along the cunt.

Delta Kitchen Faucet Leak Repair (Single Handle)

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