Couldn't have said it better myself. If we worked strictly off of hydrants then we probably wouldn't use gate valves, but since probably 75% of our water supply comes from drafting we consider them necessary.
Originally Posted by npfd801
No different than taking the LDH ball valve intakes off to pump test.
A gate valve is so you can switch back to tank water if your static source (usually a drop tank) runs dry. I doubt even the best tanker shuttles can dump enough water to max a 1000 plus GPM engine
Originally Posted by bendone