PVC ball valve loss

Long time no post, glad to see that this place is going full bore.

Quick question:

I'm reviewing some pump calcs and for the life of me I cannot verify the equivalent length used for the full port ball valve. The guy used 5.4 for a 2-inch PVC full port ball valve, I can't find ANYTHING to verify that value. Can anyone post a link to verify? Or provide other supporting information on this value?

TIA!

NSEARCH said:

Long time no post, glad to see that this place is going full bore.
Quick question:

I'm reviewing some pump calcs and for the life of me I cannot verify the equivalent length used for the full port ball valve. The guy used 5.4 for a 2-inch PVC full port ball valve, I can't find ANYTHING to verify that value. Can anyone post a link to verify? Or provide other supporting information on this value?

TIA!

Click to expand...

The spreadsheet that I use has it as 9.

cjdecuir said:

The spreadsheet that I use has it as 9.

Click to expand...

But according to API RP 14E the equivalent length is actually 2

What does your spreadsheet have for a standard 90 (2-inch PVC)?

Just checking the validity of 9.