The pressure of water comming out seems like it would be too much to get it to stop comming out How do they get the lid back on the fire hydrent when they want to turn it off?sorry no clue as to what section to ask this in
McMaster has a full listing of thin-wall and thick wall pipe and pipe fittings.
I hope not, but it is possible. Always try to take speed bumps at an angle and very slowly to help keep damage from happening. Look under the car and make sure there isn't any fluid leaking from it, or have it checked just to be sure. Good luck.