A check valve on a sump pump is a one-way valve that allows water to flow in one direction, preventing it from flowing back into the sump pit. If the check valve is not functioning properly, it can cause the pump to run continuously or fail to pump water out of the pit effectively. Here are the steps for replacing a check valve on a sump pump:
- Shut off the power to the sump pump. This is an important safety step, as working on the pump while it is powered can be dangerous.
- Locate the check valve. The check valve is usually located near the outlet of the sump pump, between the pump and the discharge pipe.
- Disconnect the check valve. Depending on the type of check valve you have, you may need to loosen a clamp or unscrew a fitting to disconnect it from the pump and the discharge pipe.
- Remove the old check valve. Carefully pull the old check valve out of the discharge pipe and set it aside.
- Install the new check valve. Slide the new check valve into the discharge pipe and secure it in place according to the manufacturer’s instructions. Make sure the arrow on the check valve is pointing in the direction of water flow.
- Reconnect the check valve to the pump and discharge pipe. Tighten any fittings or clamps to secure the check valve in place.
- Test the sump pump. Fill the sump pit with water and turn on the pump to make sure it is working properly.
Replacing a check valve on a sump pump requires some basic plumbing skills and knowledge. If you are not comfortable with this type of work, it is recommended to hire a licensed plumber to handle the replacement.
Sump pumps usually last for years without any significant problems if given proper attention to it. When problems do occur, don’t panic. Sump pumps are relatively easy to repair. Most of the sump pump repairs can be done by yourself.
Let’s take a look at how to install or replace a check valve for your sump pump.
Installing a new sump pump check valve
To install a new valve, slide one flexible coupling over the pipe that connects to the pump and another over the pipe that connects to the drain. Insert the valve with the direction-of-flow arrow facing away from the pump. To reinstall a valve after reversing its direction of flow, slide the coupling over the pipe stubs on the valve and tighten the straps.
Adding a sump pump check valve
To add a check valve to a line that doesn’t have one, purchase a valve no smaller in diameter than the existing drain pipe and any required couplings or adapters. Use a hacksaw or pipe cutter to cut out a section of pipe to accommodate them. Deburr the cut edges with a metal file or utility knife.