In my zone, there is a really good water pressure. The problem is that when there is a power outage, the pressure gets really bad to the point that there is no water in the house.
To solve this, my neighbor installed a water tank on top of his house. This made his water pressure to go down to the point that you need to get close to the wall to use the shower (on the second floor).
Is there a way to install a water tank without losing water pressure?
Something came to my mind but I'm not really sure that this would work or if there is going to be complications in the future.
The check valve could be something like this one i found in amazon.
I think that this would yield the same pressure (or close) as without the water tank, but when there is a power outage, it will start using the water from the water tank.
Is this feasible? It seems logic to me, but I don't know much about this so I might be over looking something really basic :). Will the check valve decrease the pressure?
If not, what are my alternatives for my scenario? I want to have a good pressure and won't mind to have low pressure (but water in the house) when there is a power outage.