dart pump question

sphelps · #1 02-09-2009, 02:14 AM

Where did you get that 1 elbow equals one foot of head pressure?

christyf5 · #2 02-09-2009, 02:40 AM

Quote:

Originally Posted by sphelps

Where did you get that 1 elbow equals one foot of head pressure?

You know, I have no idea where I got it originally but I have seen it perpetuated throughout various forums. Is this not the case??

Aquattro · #3 02-09-2009, 02:47 AM

Quote:

Originally Posted by christyf5

You know, I have no idea where I got it originally but I have seen it perpetuated throughout various forums. Is this not the case??

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

sphelps · #4 02-09-2009, 03:04 AM

Quote:

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.