In the first case the valve will drain water out of the discharge pipe as explained above.
Water heater ball valve stuck.
If the valve moves at all add a little more penetrating oil to it.
The main valve connects your water utility service line with the water system in your home and could be located inside or outside your home by the sidewalk.
Drip penetrating oil down the shaft of the valve and allow it to soak in.
This may require you to turn off the entire home s supply.
Try gently tapping the water valve with a hammer to help the oil penetrate the valve.
Try to open the stuck valve now that the oils had a chance to work.
This may seem like a leak but it s really just the relief valve doing its job.
This will prevent water from coming out of the stuck shut off valve once you get it to move.
Let the penetrating oil work its way into the body of the valve.
Even though ball valves may become stuck or hard to move they are very useful because they are long lasting and durable.
The valve might not seal properly for instance or the valve can get stuck and remain open allowing water to continuously drain out.
What should you do when your water heater s relief valve is leaking.
They have an ability to work efficiently even after years of disuse.
Apply a few drops to the valve.