Pressure Testing
Pressure Testing
(OP)
I have to over pressure and leak test a duct. I am enclosing each end of the duct to pressure test to an internal presuure of 4" WC (0.14 PSI) gauge. Here lies my question, will I have to pull a partial vacuum or apply positve air pressure to the enclosured space? It appears that I would have to add air pressure but my thoughts are clouded with the effects of atmospheric pressure.





RE: Pressure Testing
You're only concerned with differential pressure between the inside and outside of the duct, correct?
The outside (ambient) pressure doesn't matter, as long as the inside is 4" WC higher.
Good on ya,
Goober Dave
RE: Pressure Testing
RE: Pressure Testing
RE: Pressure Testing
RE: Pressure Testing
Cheers,
John