Manifold/Valves under water
Hello,
I hope I'm posting this in the correct section, but my issue has to do with one of my manifold boxes. It is completely submerged in water. I know it isn't a leaking valve or anything sprinkler related because I previously dug out the manifold/valves and let it sit for a week to make sure nothing was leaking. I have 4 in-line valves in this manifold. My question is, is it possible to raise/elevate the valves by adding a 90 degree tee and like a 8" extension without messing up water flow/pressure? Basically the valves would be at ground level instead of underground.
Thanks in advance for any/all help. (I can attach pictures if needed).