Understanding a Well Pressure Tank
Before we proceed with how to drain a well pressure tank, it’s crucial to understand its purpose in your home water system. A well pressure tank maintains water pressure throughout your home and reduces the wear and tear on your well pump by minimizing the frequency it needs to switch on and off. Eventually, you may need to drain your tank, either for maintenance purposes, to troubleshoot issues, or to replace the tank.
Tools and Materials Needed
- Adjustable wrench
- Garden hose
- Channel-lock pliers or another adjustable wrench
- A small container or bucket to collect water
- Towels or rags to clean up any spills
Step 1: Turn Off Power to the Well Pump
Before beginning any work on your well system, ensure that the power to the well pump is completely shut off. This can be done at the circuit breaker or fuse box. This step is crucial not only for your safety but also to prevent the pump from activating while you are working on the system.
Step 2: Close the Water Supply Valve
Locate and close the valve that controls water flow from the well to the pressure tank and the rest of your home. This valve is typically found on the pipe that leads to the pressure tank. Closing the valve ensures that water will not continue to flow into the tank as you attempt to drain it.
Step 3: Connect a Garden Hose
Find the drain valve at the bottom of the pressure tank. Attach a garden hose to this valve, ensuring it is securely fastened. Route the other end of the hose to an appropriate draining location, such as an outdoor area or a floor drain, where the discharge will not cause damage or erosion.
Step 4: Open the Drain Valve
Open the drain valve by turning it counterclockwise with channel-lock pliers or an adjustable wrench. Water should now begin to flow out of the pressure tank through the hose. Be prepared to catch any initial spillage with a bucket or towels.
Step 5: Release Pressure in the Tank
If the water does not begin to flow, or if it’s very slow, it could be due to pressure still being trapped in the system. To relieve this pressure, locate the air valve (similar to a tire valve) on the top or side of the tank and depress the valve stem to let out air. Be careful as the water may start to drain quickly once the pressure is released.
Step 6: Check If the Tank Is Empty
Allow the tank to drain completely. You’ll know it’s empty when the flow of water from the hose stops. Once drained, open a few faucets in the house to let any residual water from the pipes drain out as well.
Step 7: Close the Drain Valve and Detach the Hose
Close the drain valve by turning it clockwise until it is firmly closed. Remove the garden hose and store it appropriately.
Step 8: Turn the Water Supply Valve Back On
Once everything has been drained and the hose is removed, you can reopen the water supply valve to allow water back into the tank. This step re-pressurizes the tank and prepares it for normal operation.
Step 9: Restore Power to the Well Pump
Finally, restore power to the well pump by turning on the circuit breaker or replacing the fuse. This will reactivate the well pump, and it will begin to fill the pressure tank with water. Check for any leaks around the drain valve and other fittings during this step.
Conclusion
Draining a well pressure tank is a relatively straightforward process, but safety should always be the top priority. Ensure that the system is completely powered down before starting your work to avoid any accidents. Regular maintenance of your well pressure tank, including draining and inspection, can help extend the life of your well system and ensure consistent water pressure in your home.