I need a vent hole, but I don't know the formular for the size.
I need a vent hole, but I don't know the formular for the size.
(OP)
Hello:
I have a air system pressure of 235 psig. I need to install a vent into the piping and the flow rate through the vent hole has to be 5-scfm. I don't think the size of the plumbing makes a difference, but it is 4 inch class # 300 piping.
Thank you for your assistance,
Darrell
I have a air system pressure of 235 psig. I need to install a vent into the piping and the flow rate through the vent hole has to be 5-scfm. I don't think the size of the plumbing makes a difference, but it is 4 inch class # 300 piping.
Thank you for your assistance,
Darrell





RE: I need a vent hole, but I don't know the formular for the size.
You could try looking up "Flow of air in pipes" pages 401 and 402 of Machinerys' Hand book. These appear to be the formula s you are looking for.
Regards David
RE: I need a vent hole, but I don't know the formular for the size.
I did look in my Machinery's Handbook. Unfortunately, I have the 19th edition. I guess it's time to upgrade. I will crunch some numbers with those formulars.
RE: I need a vent hole, but I don't know the formular for the size.
install a valve for adjustment?