How to drain a water heater without drain valve. If this happens the best answer to a clogged drain valve is installing a ball valve. Turn off the power if you have an electric water heater. A drain valve is a convenience feature on a water heater.
Once the wasters coming out smoothly close the tp valve and shut off the faucet. The only time it will be used is when draining for repairs when it is being discarded or when flushing the lime scale out with a hose. Leave the hot side water pipe disconnected until flushing is complete then reconnect the pipe before refilling.
Shut off the hot water faucets around your. Restore the power and gas supplies to the water heater. Then close the water heater drain valve and turn on the cold water supply.
Remember also to return the pressure relief valve to its initial position. You can turn on a nearby hot water faucet to check the flow. While not an ideal solution it gives you easier access to the clog so you can make a more successful fishing attempt with your coat hanger.
To replace the water heater drain valve without draining your water heater is not as difficult as you may think. Flush the tank with water. Flip the switch to shut off power to the water heater so you dont shock yourself.
In the event you have a floor drain beside your water heater you can simply remove the drain valve and allow the water to gush out. Refill the water heater. Wrapping a paper tower around the drain valve is a good way to spot moisture.