Replacing a Dishwasher Water Inlet Valve

Co-authored by Gevorg Grigorian

Last Updated: December 21, 2023

A water inlet valve feeds water from your home’s water line into your dishwasher. If this valve is defective, water can leak out of your dishwasher and the dishes may not get cleaned. Luckily, fixing or replacing a faulting valve is an easy DIY project that only requires a few tools and a bit of time.

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1

Turn off the water and power.

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Remove the two quarter-inch hex screws located on the bottom of the dishwasher's front cover.

2

Remove the screws under the dishwasher door.

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Tip the front cover outward and the bottom panel should come out. Remove this panel.
- Remember where all four of the screws were located. The longer ones belong to the bottom of the front cover. Trying to place the long screws into the upper part could puncture the plastic basin, resulting in leaks.

3

Find the inlet valve.

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4

Detach the water hose and fitting.

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5

Remove the valve.

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6

Locate and remove the two quarter-inch screws.

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7

Remove the electrical harness.

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8

Move the outlet hose up.

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Using a pair of needle-nose pliers, squeeze the spring clamp fastening the outlet hose to loosen it and move it up. This will enable the hose to be jiggled free of the valve.
- Have a sponge, rag or towel ready as leftover water can run out of this hose.

9

Remove the old valve and install the new one.

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Install the new one and fasten it using the old fitting.

10

Clean the fitting.

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Apply a new length of Teflon tape, taking care not to get any of it inside the fitting.

11

Tighten the fitting.

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Using a vise-grip plier, tighten the fitting before it is placed back inside of the dishwasher.
- If you don't have vise-grip plier the fitting will have to be threaded manually onto the inlet valve as much as possible. Once it is on a solid surface, it can be fully tightened.

12

Reattach the hose.

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Use a jiggling motion to get the hose back onto the valve to ensure that it is seated as firmly as possible. Using the needle-nose pliers, squeeze the spring clamp once again and wiggle it back down the outlet hose. This keeps the outlet hose properly sealed and prevents any leakage.

13

Screw on the new valve.

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Reattach the new valve to the side of the machine with the two quarter-inch screws that were used to mount the old inlet valve. Reattach the valve's water supply hose and carefully connect the electrical harness to the inlet valve solenoid. Make sure the inlet valve fitting is good and tight at this time.

14

Start up the dishwasher.

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Watch closely for any leaks from the outlet hose or the inlet valve itself. If there are no apparent leaks, reinstall the front panels onto the dishwasher by reversing the process in the first step of these instructions. Take special care to insert the screws into their proper holes.

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What are some common causes for a dishwater to start leaking?

Gevorg Grigorian
Appliance Repair Expert
Gevorg Grigorian is an Appliance Repair Specialist and the Owner of G and R Appliance Repair in Los Angeles, California. With over 12 years of experience, Gevorg specializes in residential and commercial appliance repairs as well as heating, ventilation, and air conditioning (HVAC) services. Gevorg holds a BS in Business Administration and Management from California State University-Northridge.

Gevorg Grigorian

Appliance Repair Expert

Expert Answer

There are a few reasons why dishwashers will leak. Most commonly, they tend to leak from the left or right side of the door or even simultaneously on both sides due to a worn out gasket. Another reason may be that the rubber tubing and hoses of the dishwasher have been punctured by a piece of glass or even rodents chewing the tubing.

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Use a magnet or magnetic parts tray to prevent the screws from being lost.

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Warnings

Disconnect the water supply to the dishwasher and turn off the electricity before doing any work on it.

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Things You'll Need

¼ inch nut driver
Needle-nose pliers
Vise-grip pliers
Adjustable wrench
Teflon plumber's tape
Small wire brush

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Replacing a Dishwasher Water Inlet Valve

Steps

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Turn off the water and power.

Remove the screws under the dishwasher door.

Find the inlet valve.

Detach the water hose and fitting.

Remove the valve.

Locate and remove the two quarter-inch screws.

Remove the electrical harness.

Move the outlet hose up.

Remove the old valve and install the new one.

Clean the fitting.

Tighten the fitting.

Reattach the hose.

Screw on the new valve.

Start up the dishwasher.

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