Merry Christmas Gentlemen, great forum you have here, my congratulations and thanks.

I installed a new .85 HP Gould shallow well jet pump (single pipe), bladder tank and water softener a few weeks ago and have a couple of questions:

Should there be a check valve on the suction side of the pump?

Why does water rush back down the suction pipe for a few seconds after shut off, till the foot valve closes?

Is it wise to keep my suction piping under system pressure (60 PSI)
all the way down the well to the foot valve?

Should I install a check valve between the pump discharge and the tank?