Quote Originally Posted by RichardH View Post
Nitrogen is inert so it would be safe the trouble arises when people play with oxygen.

Nitrogen is used in the states for both guns and tyres for its qualities.

Also used to test Pressure relief Valves . Well we used nitrogen when testing then at the compressor place I worked at .


" In many high pressure testing applications for leak testing, gaseous nitrogen is utilized as a medium due to its low investment cost. "

It also does not introduce moisture into the test equipment.