flow rate & PVC question.

[rjengen]

Does anyone off hand know the flow rates of 1" PVC being gavity fed by an 8" head of water? My PS4 pumps have a 1" hose barb for both suction and discharge and due to a minor mishap involving my butterfingers and a pipe wrench I need to get a new sump. I'm wondering if a 1" line would be enough to keep the pump happy, or if I should stick with my current 1.5" lines which are reduced down to 1" at the pump. If you can help a noob out I'm be happier then a pig in poo, and I'll even buy you a pop of your choice if you're ever in town.