Acid Digestion Hood
Acid Digestion Hood
(OP)
I am a new facilities engineer at a local university. We have a system (designed by an outside consultant) that uses flow control valves on VAV fume hoods. The hoods are used extensively for acid digestion (boiling off hydrochloric acid, hydrofluoric acid, nitric acid, OR hydrogen peroxide). After operating ~18 months, response on one valve diminished. Investigation revealed a build-up of acidic matter on the low-pressure side of the (vertically-oriented) valve cone. For those who have experience with this type of operation, is a constant-volume hood preferred for this application?
Thanks in advance.
Thanks in advance.





RE: Acid Digestion Hood
RE: Acid Digestion Hood
RE: Acid Digestion Hood
Call the Engineer who designed this, you won't be able to bootstrap as solution on a web forum.