So should I have 2 fume hoods or 1

[Barren Realms 007]

what i am trying to cover are steel pipes
they are about 4 inches in diameter
and they are worm or mildly hot
they are in the same room where the fume hood is and are directly exposed to the atmosphere.
there are also smaller pipes 2 inch pipes that are also steel
all this is about 3 to 4 feet away from the fume hood

If your fume hood keeps the contaminents out of the room you should not have to worry about the pipes.

 

[qst42know]

If it were me anything in the hood is at risk and you need to move the hood or the pipes. Everything in the room (except for things like sprinkler heads) needs a good coat of quality paint.

 

[goldnugget77]

Hi people
Thanks
I have a better idea of what to do now

 

[Harold_V]

what i am trying to cover are steel pipes
they are about 4 inches in diameter
and they are worm or mildly hot
they are in the same room where the fume hood is and are directly exposed to the atmosphere.
there are also smaller pipes 2 inch pipes that are also steel
all this is about 3 to 4 feet away from the fume hood

If your fume hood keeps the contaminents out of the room you should not have to worry about the pipes.

The notion of keeping the atmosphere acid fume free is interesting, but far from reality. I ran my fume hood almost constantly, but over a period of about ten years, anything metallic that was not protected was corroded, albeit not very badly. That included some items made of stainless. I also recall that the anodized aluminum window frames were slightly corroded.

If you desire to keep things looking good in a lab, be prepared to re-paint occasionally, and to apply protective covering to all metal surfaces.

Harold

 

[Lou]

My advice: paint now, not later! Now the metal is bare and not oxidized. The paint will stick and won't spall and come off like it would if you were trying to hastily remedy a situation.


Epoxy paint is the best paint to use. I'll check what brand it is.

Also, I work on epoxy countertops. The only thing that gives them trouble is concentrated KOH and HF. They're practically bulletproof for aqua regia.

http://labfabricators.com/

 

[Frankk12]

I am wondering if it would be OK to use oil paint instead of PVC paint or the other paint 4metals was talking about.
Thanks

 

[4metals]

It's a question of degree, painting the new unoxidized pipes with either an epoxy paint or a pvc coating will give you a high degree of protection. Left over builders paint you have in the basement will still do the job but to a much lesser degree. If you're setting up a hood and plan on doing some serious work, put the time and effort into protecting the surrounding area up front and you will have less maintenance and upkeep to do later.