Yes the 5/8 meter restricts, and if you can upgrade then thats great! i have 19.5 gpm with a 5/8 meter and thgats off the hose bibb with 95 psi....so it depends.......definatly use 1" for the lines
Thanks
Ray
Rays Above and Beyond Automatic Lawn Sprinklers
Thanks
Ray
Rays Above and Beyond Automatic Lawn Sprinklers