how-to-fix-a-leaky-faucet Archives * flexco.com

Delta faucets are renowned for their durability and reliability. However, even the most dependable products require occasional maintenance. If you’re experiencing issues with your Delta faucet, such as leaks or decreased water pressure, replacing the cartridge may be necessary. This relatively simple task can restore your faucet to optimal functionality, saving you time, money, and the hassle of calling a plumber.

Changing a Delta faucet cartridge is a straightforward process that can be completed in a few simple steps. First, it’s essential to gather the necessary tools. You’ll need a Phillips head screwdriver to remove the handle and an adjustable wrench or cartridge puller to extract the cartridge. Once you have the proper tools, you can begin the replacement process. First, turn off the water supply to the faucet. Next, remove the handle by unscrewing the retaining screws with the Phillips head screwdriver. Once the handle is removed, you’ll see a large nut that holds the cartridge in place. Use the adjustable wrench or cartridge puller to loosen and remove this nut.

Once the nut is removed, the cartridge can be pulled out of the faucet body. Be careful not to damage the O-rings on the cartridge, as they create a seal to prevent leaks. Inspect the old cartridge for any signs of damage or wear. If necessary, replace the O-rings before installing the new cartridge. Insert the new cartridge into the faucet body and hand-tighten the nut. Then, reattach the handle and tighten the retaining screws. Turn on the water supply and check for any leaks. If there are no leaks, your faucet should be working properly again.

Identifying the Cartridge Type

The first step in changing a Delta faucet cartridge is to identify the type of cartridge your faucet uses. There are three main types of Delta faucet cartridges:

1. **Single-handle cartridges:** These cartridges are used in single-handle faucets. They have two seals, one on the top and one on the bottom. The top seal prevents water from leaking out of the faucet when it is turned off. The bottom seal prevents water from leaking into the faucet when it is turned on. Single-handle cartridges can be identified by their round or oval shape.

2. **Two-handle cartridges:** These cartridges are used in two-handle faucets. They have one seal, which is located on the bottom of the cartridge. This seal prevents water from leaking into the faucet when it is turned off. Two-handle cartridges can be identified by their rectangular or square shape.

3. **Pressure-balance cartridges:** These cartridges are used in pressure-balance faucets. They have two seals, one on the top and one on the bottom. The top seal prevents water from leaking out of the faucet when it is turned off. The bottom seal prevents water from leaking into the faucet when it is turned on. Pressure-balance cartridges can be identified by their hexagonal or octagonal shape.

To determine the type of cartridge your faucet uses, you can refer to the faucet’s owner’s manual or look for the cartridge type number on the cartridge itself. If you are still unsure of the cartridge type, you can contact Delta customer service for assistance.

Cartridge Type	Shape	Number of Seals
Single-handle	Round or oval	2
Two-handle	Rectangular or square	1
Pressure-balance	Hexagonal or octagonal	2

Preparing the Faucet

Before you start changing the cartridge, you need to prepare the faucet. Here are the steps on how to prepare the faucet:

Turn off the water supply

The first step is to turn off the water supply to the faucet. There will be two shut-off valves under the sink, one for hot water and one for cold water. Turn both valves clockwise to shut off the water.
Open the faucet

Once the water supply is turned off, open the faucet to release any remaining water in the lines. This will help prevent water from leaking out when you remove the cartridge.

Remove the faucet handle

The next step is to remove the faucet handle. There is usually a small set screw on the underside of the handle. Use a screwdriver to loosen the set screw and then pull the handle straight up to remove it.

Faucet Type	Handle Removal Method
Single-handle faucet	Use a hex key to remove the set screw and then pull the handle straight up.
Two-handle faucet	Use a screwdriver to remove the set screws on both handles and then pull the handles straight up.
Pull-out faucet	Pull the faucet head out of the spout and then look for a set screw on the underside of the handle. Use a screwdriver to loosen the set screw and then pull the handle straight up.

Remove the cartridge cap

Once the handle is removed, you will see the cartridge cap. The cartridge cap is usually held in place by a small screw. Use a screwdriver to loosen the screw and then remove the cartridge cap.

Disassembling the Handle

With the handle secured in place, you can now proceed to disassemble it. Grip the handle at the base where it meets the valve body and turn it counterclockwise by hand or using a pair of pliers if needed.

After unthreading the handle, carefully remove it from the valve body. If there is a small set screw holding the handle in place, use a screwdriver to loosen and remove it before taking off the handle. Set aside the handle for later reassembly.

Once the handle is removed, you should have access to the cartridge retaining nut. This nut is typically secured with a plastic cap. Use a flathead screwdriver or a pair of pliers to gently pry off the cap. Be careful not to damage the cap or the nut.

Using an adjustable wrench or a pair of pliers, carefully loosen and remove the cartridge retaining nut. It may be necessary to apply some force to break the nut loose, but avoid overtightening or damaging it.

Now that the retaining nut is removed, you can access and remove the cartridge from the valve body. Pull the cartridge straight out by hand. If the cartridge is stuck, you may need to use a cartridge puller or a pair of pliers to gently pull it out.

Removing the Cartridge

1. **Turn off the water supply**. Locate the water supply valves under the sink and turn them off clockwise.

2. **Open the faucet to release pressure**. Open the faucet to allow any remaining water to drain out of the lines.

3. **Locate the cartridge access cap**. It is typically located on the top or side of the faucet handle.

4. **Remove the cartridge access cap**:
– **Single-handle faucets:** Use a flathead screwdriver or a coin to pry off the access cap.
– **Two-handle faucets:** Use an Allen wrench or hex key to loosen the set screw holding the cap in place, then remove the cap.

5. **Extract the cartridge**.
– **Single-handle faucets:** Use a faucet wrench or pliers to grasp the cartridge and unscrew it counterclockwise.
– **Two-handle faucets:** Use a pair of pliers to gently pull the cartridge straight out of the housing.

6. **Inspect the cartridge**. Look for any signs of wear, damage, or corrosion. If the cartridge is damaged, it must be replaced.

Selecting the Right Replacement Cartridge

Identifying the correct replacement cartridge for your Delta faucet is crucial to ensure proper fit and functionality. Here are some steps to guide you:

Determine the Faucet Model: Locate the model number on the faucet body, usually found under the handle or on the baseplate.
Refer to the Delta Cartridge Cross-Reference Chart: Visit Delta’s website or consult their technical support to obtain a cross-reference chart for your specific faucet model.
Match the Model Number: Compare the model number on your faucet to the model numbers listed in the cross-reference chart. This will indicate the compatible cartridge type.
Check the Cartridge Style: Delta faucets typically use one of three cartridge styles: Delta 500, Delta 1300, or Delta 2500/2700 series. Determine the style based on the design of your faucet.
Confirm the Number of Holes and Spline Count: Count the number of mounting holes and splines (notches) on the cartridge. This will ensure the replacement cartridge matches the original.


Cartridge Style	Number of Holes	Number of Splines
Delta 500	2 or 4	10 or 12
Delta 1300	2 or 4	12 or 14
Delta 2500/2700	2 or 4	10, 12, or 14

Installing the New Cartridge

Now it’s time to install the new cartridge. Here’s a step-by-step guide to help you through the process:

1. Seat the Cartridge

Take the new cartridge and align it with the valve body. Gently push the cartridge into the valve body until it is fully seated.

2. Insert the Handle Screw

Locate the handle screw that came with the new cartridge. Screw the handle screw into the cartridge until it is snug.

3. Tighten the Retaining Nut

Use a wrench or pliers to tighten the retaining nut that secures the cartridge in place. Be careful not to overtighten.

4. Reinstall the Handle

Take the handle and slide it over the cartridge stem. Align the handle so that it is in the desired position.

5. Tighten the Handle Screw

Tighten the handle screw to secure the handle in place. Again, be careful not to overtighten.

6. Test the Faucet

Turn on the water supply and test the faucet. Make sure that the water flows smoothly and that there are no leaks. If there are any leaks, you may need to adjust the retaining nut or handle screw.

Water Type	Temperature	Flow Rate
Cold	40-60°F	1.5-2.0 gpm
Hot	120-140°F	1.2-1.8 gpm

Reassembling the Handle

7. Snap the Handle Back on the Faucet

Align the handle with the base of the faucet. Next, apply some pressure to the handle to snap it back into place. Make sure the handle is fully seated and secure.

8. Install the Handle Screw

Locate the handle screw and insert it into the hole on the base of the faucet. Tighten the screw using a screwdriver until the handle is firmly secured. Do not overtighten the screw, as this can damage the faucet.

If your faucet has a dual-handle design, repeat steps 7 and 8 for the other handle.

9. Test the Faucet

Turn on the water supply and check if the faucet is functioning properly. The handle should move smoothly and control the flow of water as intended. If there are any leaks or issues, disassemble the handle and inspect the cartridge for any damage. If necessary, replace the cartridge and reassemble the handle following the steps outlined above.

Testing the Faucet

Before disassembling the faucet to replace the cartridge, it’s essential to verify that the cartridge is indeed the source of the problem. Follow these steps to test the faucet and determine if a cartridge replacement is necessary:

1. Turn Off Water Supply

Locate the water supply valves beneath the sink and turn them off to prevent water flow during the testing process.

2. Open Handle

Turn on the faucet handle to release any remaining water pressure in the lines.

3. Check for Water Flow

If water continues to flow from the faucet, even with the supply valves turned off, it indicates a leak somewhere other than the cartridge. Inspect for any visible leaks around the faucet base or connections.

4. Isolate Handle

Remove the handle by pulling it straight up or unscrewing any retaining screws. If the handle moves easily without resistance, it suggests that the cartridge is not binding.

5. Remove Aerator

Unscrew the aerator at the tip of the spout using either your hands or a wrench. Inspect the aerator for debris or clogs that could restrict water flow.

6. Check Pressure

Turn on the water supply valves and observe the water pressure from the faucet. If the pressure is strong, it eliminates the cartridge as the cause of reduced water flow.

7. Rule Out Debris

Flush the faucet by turning the handle on and off several times. If any debris or sediment is present in the lines, it will be flushed out during this process.

8. Conclusion

After completing these tests, you should have a better understanding of the faucet’s condition. If the cartridge is confirmed to be the source of the problem, proceed to the next step to replace it.

Troubleshooting Common Issues

If you encounter issues after changing the Delta faucet cartridge, here are some common problems and their solutions:

1. Water Leaks from the Base of the Handle

Tighten the packing nut located behind the handle using a wrench.

2. Faucet Handle is Loose

Secure the handle screw or set screw by tightening it with a screwdriver.

3. Handle Turns with Difficulty

Check if the cartridge is installed correctly and free of debris. Lubricate the cartridge if necessary.

4. No Water Flow

Ensure that the water supply is turned on. Check for blockages in the aerator or the faucet’s inlets.

5. Water Temperature is Inconsistent

Replace the temperature limit stop if the water is too hot or too cold.

6. Faucet Drips from the Spout

Check if the O-rings on the cartridge or aerator are worn or damaged. Replace them if necessary.

7. Pressure Fluctuates

Clean or replace the aerator, which can accumulate debris causing reduced water flow.

8. Handle Won’t Stay Upright

Replace the handle adapter or the cartridge assembly if the handle keeps falling back.

9. Water Sprays from the Handle Hole

Thoroughly clean the faucet’s internals, including the aerator, handle assembly, and cartridge, to remove mineral deposits and debris that might obstruct water flow and cause it to spray out of the handle hole.

Inspect the O-rings within the cartridge assembly and handle for signs of wear or damage. Replace any worn or damaged O-rings with new ones to create a watertight seal and prevent leakage.

Ensure that the cartridge is firmly seated within the faucet body and that the handle assembly is correctly aligned with the cartridge. Loose or misaligned components can cause water to spray out of the handle hole.

Maintaining Your Delta Faucet

Delta faucets are known for their durability and reliability, but like any mechanical device, they may require occasional maintenance or repairs. One of the most common issues that can affect a Delta faucet is a faulty cartridge. Replacing the cartridge is a relatively simple task that can be completed in a few minutes with the right tools and materials.

10. Reassemble the Faucet

Once the cartridge is replaced, it’s time to reassemble the faucet.
1. Start by replacing the handle. Align the handle with the stem and insert the set screw. Tighten the set screw with an Allen wrench.
2. Next, replace the handle cap. Align the cap with the handle and snap it into place.
3. Finally, replace the aerator. Screw the aerator onto the faucet spout by hand. Do not overtighten.

Your Delta faucet is now reassembled and ready to use. If you encounter any issues during the reassembly process, please refer to the user manual for your specific Delta faucet model.

How to Change a Delta Faucet Cartridge

Changing a Delta faucet cartridge is a relatively simple task that can be completed in a few minutes. Here are the steps on how to do it:

Turn off the water supply. The first step is to turn off the water supply to the faucet. You can do this by closing the shut-off valves under the sink or by turning off the main water supply valve.
Remove the handle. Once the water supply is turned off, you can remove the handle. To do this, use a hex key or Allen wrench to loosen the set screw at the base of the handle. Once the set screw is loose, pull the handle straight up and off the faucet.
Remove the cartridge. Once the handle is removed, you will be able to see the cartridge. To remove the cartridge, use a cartridge puller or a pair of pliers. If you are using a cartridge puller, simply insert the puller into the cartridge and turn it counterclockwise. If you are using pliers, grip the cartridge and turn it counterclockwise.
Insert the new cartridge. Once the old cartridge is removed, you can insert the new cartridge. To do this, simply insert the new cartridge into the faucet and turn it clockwise.
Reinstall the handle. Once the new cartridge is installed, you can reinstall the handle. To do this, insert the handle into the faucet and tighten the set screw.
Turn on the water supply. Once the handle is reinstalled, you can turn on the water supply. Check for leaks and make sure that the faucet is working properly.