Frankr409
10-29-2013, 10:57 AM
I wanted to wait until I actually started working with my contractor on the plumbing before I committed to a bulkhead size on the new 280 that I am putting in to service.
Essentially I am trying to figure out how much water flow I could REASONABLY expect through two 2" bulkheads that will be plumbed into one PVC pipe leading to my sump. I am aware of Hazen-Williams equations and so on, but do not wish to go that far with the calculations, I just want a reasonable guess if anyone has one.
Is anyone out there using a bulkhead that size for an overflow, and if so what would you approximate your flow rate to be. I saw a separate website http://flexpvc.com/WaterFlowBasedOnPipeSize.shtml that suggests flow rates of an unimpeded pipe that size to be about 3300 gallons per hour.
I will have several variables which I am certain would reduce that rate, although I'm not sure if it is substantial:
- At least 5 elbows I would think to snake into the sump behind the wall.
- Two 2" inch strainers.
- A gate valve to fine tune the exhaust flow somewhat, but assume it is wide open
- At least 15 feet of 2" Schedule 80 pvc.
Any thoughts will be appreciated, it will help me better plan the return side of the sump and I can at least get a pump that would perhaps give me more flow than I thought I might originally get when the plan was to do commercial overflow boxes.
Thanks!
Essentially I am trying to figure out how much water flow I could REASONABLY expect through two 2" bulkheads that will be plumbed into one PVC pipe leading to my sump. I am aware of Hazen-Williams equations and so on, but do not wish to go that far with the calculations, I just want a reasonable guess if anyone has one.
Is anyone out there using a bulkhead that size for an overflow, and if so what would you approximate your flow rate to be. I saw a separate website http://flexpvc.com/WaterFlowBasedOnPipeSize.shtml that suggests flow rates of an unimpeded pipe that size to be about 3300 gallons per hour.
I will have several variables which I am certain would reduce that rate, although I'm not sure if it is substantial:
- At least 5 elbows I would think to snake into the sump behind the wall.
- Two 2" inch strainers.
- A gate valve to fine tune the exhaust flow somewhat, but assume it is wide open
- At least 15 feet of 2" Schedule 80 pvc.
Any thoughts will be appreciated, it will help me better plan the return side of the sump and I can at least get a pump that would perhaps give me more flow than I thought I might originally get when the plan was to do commercial overflow boxes.
Thanks!