Tek-Tips is the largest IT community on the Internet today!
Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!
-
Congratulations cowski on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!
Dry pipe system and nitrogen
- Thread starter cdafd
- Start date
- Thread starter
- #4
Continued maintenance problem in what aspect? N2 gas is inert, therefore the rubber seal on the dry sprinkler valve clapper should be compatible and maintain its integrity. Also, while there is a very small amount of air leakage controlled by an air compressor, a bank of high pressure N2 cylinders should last a very long time and in my opinion would be relatively maintenance free.
- Thread starter
- #6
What I typically see is nitrogen generators in small cabinets. Since N2 is 78% of the atmosphere these generators have a membrane that filters out the rest of the stuff leaving N2 gas.
I'm not sure how a N2 rich environment wouldn't greatly reduce corrosion. Removing O2 can only help. Potter has a presentation online showing their results.
I'm not sure how a N2 rich environment wouldn't greatly reduce corrosion. Removing O2 can only help. Potter has a presentation online showing their results.
- Thread starter
- #8
RiskConslt
Specifier/Regulator
It seems that we are finally settling on a solution to MIC, pipe scale, and corrosion in all forms: nitrogen charging, even in wet pipe systems. It makes too much sense and has some good track record so far. Look at NACE for more information on long term tests with black iron vs. galvanized vs. nitrogen charged. A reasonable system I have seen is N2-Blast: (I am not a salesman) the approach of a generator and tank creates the simplest solution.
- Status
Similar threads
- Question