Sump Pump Check Valve Failure: Reasons and Solutions

If you have a sump pump check valve installed and it fails, your sump pump will not work properly. The check valve is designed to keep water from flowing back into the sump pit after turning off the pump.

If the check valve fails, water can flow back into the pit, which can cause the pump to turn on again and run continuously. This can be very frustrating and costly.

How to Tell if the Check Valve is Flawed

If you notice your sump pump is running more than usual, or if it seems to be running all the time, there is a good chance the check valve is bad.

You can also tell if the check valve is bad if you hear water flowing back into the pit after the pump has turned off. This is called a “water hammer,” it is a sign that the check valve is not working properly.

The Sump Pump Moved from its Original Position

If you notice your sump pump has shifted position, this is not normal. It could be a sign that the check valve is bad and needs to be replaced. If your sump pump has moved, it may indicate that the check valve is misaligned.

There are several reasons why a pump may move. One cause is ground movement, such as that caused by earthquakes or unstable soil in the basement of a home.

Defective Valves or Faulty Sump Pump

It is essential to have a quality product for everything you often use. This is especially important for sump pumps since they are responsible for keeping your basement dry.

If you have a defective valve or sump pump, it could cause extensive damage to your home. A professional should check and repair any defects as soon as possible to avoid further problems.

Debris Blocking Discharge

If you see or suspect that debris is blocking your check valve, it is important to have it removed as soon as possible. Blocked valves are one of the most common causes of sump pump check valve failure.

The debris can be anything from leaves and twigs to mud and concrete. If the valve becomes blocked, water will back up and eventually overflow into your home.

Current check valve technology can remove debris, but it may be done manually if the obstruction is severe. Check that water flows out of the discharge pipe after removing the blockage.

Reasons for sump pump check valve failure

There are several reasons why a sump pump check valve may fail.

Damaged rubber seal

One reason for check valve failure is that the flap or rubber seal may be damaged or worn out. If the flap is damaged, it may not seal properly and allow water to flow back into the pit. The rubber seal can also become brittle and break, allowing water to leak past it.

Sediment or debris

The most common reason is that they become clogged with sediment or debris. Over time, this can cause the check valve to stick in the open position, which will allow water to flow back into the pit. 

Improper installation

Another reason for check valve failure is improper installation. If the check valve is not installed correctly, it may not seal properly and allow water to leak past it.

Broken spring

Another reason for check valve failure is that the spring may be damaged or broken. The spring helps to keep the flap closed when the pump is not running. If the spring is damaged, the flap may not close properly and allow water to flow back into the pit.

Cracked housing

The third reason for check valve failure is that the housing may be cracked or broken. This can happen if the sump pump is installed improperly or not maintained properly. If the housing is cracked or broken, water can leak out and cause the pump to turn on again.

Solutions for sump pump check valve failure

If you have a sump pump check valve that has failed, you can do a few things to fix it.

Replace the rubber seal

If the rubber seal is damaged or worn out, you can replace it with a new one. This is a relatively easy fix and should correct the problem.

Clean or replace the check valve

If the check valve is clogged with sediment or debris, you can try cleaning it out. If this doesn't work, you will need to replace the check valve.

Install a new check valve

If the check valve is not installed correctly, you can install a new one. This is a relatively easy fix and should correct the problem.

Replace the spring

If the spring is damaged or broken, you can replace it with a new one. This is a relatively easy fix and should correct the problem.

Fix the cracked housing

If the housing is cracked or broken, you will need to replace it. This is a more difficult fix and may require professional help.

Preventing sump pump check valve failure

You can do a few things to prevent sump pump check valve failure.

Inspect the check valve regularly

You should inspect the check valve regularly to ensure it is not damaged or worn out. You should also clean it out if you notice any sediment or debris.

Install a new check valve every few years

You should install a new check valve every few years to prevent it from becoming clogged or damaged.

Maintain your sump pump

You should maintain your sump pump to prevent it from becoming damaged or broken. This includes regularly cleaning it and making sure it is properly installed.

Final Words

Sump pump check valves are an important part of your sump pump system. They prevent water from flowing back into the pit, which can cause the pump to turn on again. However, they can fail if they become damaged or clogged. If your check valve has failed, you can do a few things to fix it. You can also prevent sump pump check valve failure by regularly inspecting and cleaning the check valve and by properly maintaining your sump pump.

We hope this article has been helpful. If you have any further questions or want more information, please contact us.

Sump Pump Advisor
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