dart pump question

[sphelps]

Originally Posted by Aquattro

got it from me. 1 90 elbow puts an extra foot's worth of head into a circuit. Or close enough to calculate for our needs.

Of course now that I try to find where I got that from, I can't, and find other sites that tell me 4ft for a 90 at 1" ID...sigh

Yeah that's not even close to being accurate. First it depends on water level height difference, flow rate, pipe diameter and pipe length but if you really wanted to estimate it would be closer to 3 elbows to create one foot of pressure provided the correct pipe size is used. The bigger the pipe diameter the less impact elbows have on head pressure.