How do you stop a washing machine valve from leaking?

Quick Answer

There are a few common reasons why a washing machine valve may leak and several ways to try fixing it:

• Replace the valve if it is worn out or damaged
• Tighten the valve connections if they are loose
• Replace the valve seals/gaskets if they are worn out
• Clean out debris that may be trapped under the valve
• Replace the valve solenoid if it is not functioning properly

What Causes a Washing Machine Valve to Leak?

There are several potential causes for a leaky washing machine valve:

Worn Out or Damaged Valve

Over time, the plastic material of the valve can become brittle and develop cracks or damage that allow water to leak out. Mineral deposits from hard water can also build up on the internal components of the valve and prevent it from sealing properly. Replacing an old, worn out valve is often the best solution.

Loose Connections

The supply lines or hose connections into the valve can become loose over time from the machine vibration during washing cycles. This allows water to leak out around the connections. Tightening the connections with an adjustable wrench or pliers can often fix minor leaks from loose connections.

Worn Out Valve Seals/Gaskets

There are rubber gaskets and seals within the valve assembly that help control water flow and prevent leaks. Over time these can become compressed, cracked or torn and need to be replaced. Changing the seals and gaskets is less costly than replacing the entire valve.

Debris Trapped Under the Valve

Small particles of debris can become lodged under the valve seat which prevents the valve from fully closing. This is most common with the hot and cold water inlet valves. Turning off the water lines and disassembling the valve to clean out any debris can fix this issue.

Faulty Valve Solenoid

Many washing machine valves use an electrical solenoid to control water flow by opening and closing the valve. If the solenoid is burned out or malfunctioning, it won’t open or close properly and can cause leaking. Replacing just the valve solenoid is often the solution in this case.

How to Fix a Leaky Washing Machine Valve

Here are step-by-step instructions for several methods to stop a washing machine valve from leaking:

Replace the Valve

Replacing the entire valve is the best solution if it is badly worn out or damaged. Follow these steps:

1. Turn off water supply lines and disconnect hoses.
2. Remove mounting screws or clips to detach valve.
3. Install new valve and reconnect hoses and water lines.
4. Turn on water and check for leaks.

Tighten Valve Connections

Try this if the valve has loose connections:

1. Turn off water supply lines.
2. Tighten any loose fittings with adjustable wrench or pliers.
3. Inspect washers/gaskets, replace if worn.
4. Reconnect lines, turn on water, and check for leaks.

Replace Valve Seals/Gaskets

Follow these steps to replace worn valve gaskets:

1. Turn off water and disconnect hoses.
2. Disassemble valve and remove old gaskets/seals.
3. Install new gaskets and reassemble valve.
4. Reconnect hoses and water, then check for leaks.

Clean Debris from Valve

To fix debris stuck under the valve:

1. Turn off water and disconnect hoses.
2. Take apart valve and inspect for debris.
3. Clean out any debris and scrub components.
4. Reassemble valve and reconnect hoses.
5. Turn on water supply and check for leaks.

Replace Solenoid

For a faulty solenoid valve:

1. Unplug washing machine power cord.
2. Remove mounting screws and detach solenoid.
3. Install new solenoid and reattach screws.
4. Reconnect washing machine power and test valve.

How to Prevent Washing Machine Valve Leaks

Here are some tips to help prevent washing machine valve leaks:

• Inspect valves periodically for wear and damage.
• Replace valves and seals/gaskets every 5-7 years.
• Use valve cleaner/descaler products to remove mineral deposits.
• Always turn off water supply when not using the washer.
• Avoid excessive water pressure – use a regulator if needed.
• Hand tighten connections plus 1/4 turn – don’t over tighten.
• Flush water lines to remove debris that could get lodged in valve.

Proper preventive maintenance and replacing valves before they fail can help avoid leaks and water damage from faulty washing machine valves.

When to Call a Professional for Washing Machine Valve Leaks

While many minor washing machine valve leaks can be fixed with basic tools, there are some instances when it is best to call in a professional:

• If the valves are in a difficult to reach spot.
• If you are unable to determine the cause of the leak.
• If the valves or connections are rusted or corroded.
• If replacing the valves requires turning off your main water supply.
• If you are uncomfortable working with plumbing and valves.
• If there are other leaks or issues in addition to the valve.

Trying to fix washing machine valves without proper experience can sometimes make the problem worse and lead to bigger leaks or water damage. Calling a plumber or appliance repair technician is the best option if you are unable to diagnose or repair the leaky valve on your own.

Conclusion

Leaky washing machine valves can often be repaired at home by replacing worn parts like gaskets and solenoids, tightening connections, or cleaning out debris. But call a professional plumber if you are unable to determine the cause or repair it safely. Preventing leaks relies on periodically inspecting valves and replacing them every 5-7 years or at the first sign of damage. Addressing washing machine valve leaks quickly can prevent catastrophic water damage to your home.

Cause of Leak	Fix
Worn out or damaged valve	Replace valve
Loose connections	Tighten connections
Worn seals or gaskets	Replace seals and gaskets
Debris trapped under valve	Disassemble and clean valve
Faulty solenoid	Replace solenoid

Prevention Tip
Inspect valves periodically
Replace valves every 5-7 years
Use valve descaler products
Always turn off water when not in use
Use a water pressure regulator if needed
Hand tighten connections plus 1/4 turn
Flush water lines to remove debris

When to Call a Professional
Valves in difficult to reach location
Unable to determine cause of leak
Valves or connections are rusted/corroded
Requires turning off main water supply
Uncomfortable working with plumbing
Other leaks or issues in addition to valve