Back flow is both a vital component of water system operation and a great career builder. We strongly recommend our friends at B & L Back flow who provide the very best in Back flow and Cross Connection Specialist training. Be sure to tell them we referred you.
maximum flow at five feet per second for nominal pipe sizes:
0.5 inch 5 gpm
0.75 inch 8 gpm
1 inch 12 gpm
1.25 inch 20 gpm
1.5 inch 30 gpm
2 inch 45 gpm
2.5 inch 75 gpm
3 inch 110 gpm
4 inch 190 gpm
6 inch 400 gpm
8 inch 750 gpm
10 inch 1,200 gpm
12 inch 1,600 gpm
National Environmental Services Center has four page brochures on water topics like filtration and disinfection. Great material for board education. I think of their material as the executive summary.
