purging and pressuring ac with n2

[kefah]

hi every one
i want to use n2 in purging and testing ac for leaks
and first time to me
my q are
1_ what precautions i must make in care when use n2 in purging etc....
2_ which type of n2 i must use
because in iraq we have pure n2 only but some experts adviced me to use impure n2 cylinder which contain 90% n2 and 10% oil because its best than pure n2 in purging and testing

[Rodney28334]

This is not a do it your self site but I will give basic safety information. The main precaution is use a pressure regulator that is in good shape, has a clean over pressure release valve and check hoses for cuts or tears and max working pressure! Max pressure depends on system and equipment, read labels. Wear safety glasses. Use pure nitrogen only. Bad gas and oil can contaminate the system. Unless they meant to add a little refrigerant so an electronic leak finder can also be used.

[Chris_Worthington]

Thread relocated to "Tech to Tech"

[beenthere]

Use pure/dry nitrogen. You don't want to be adding oil to a refrigeration system when you flow or pressure test with nitrogen.

[beb]

Are you serving in the Military

[kefah]

Are you serving in the Military

???????????????????
i dont understand

[kefah]

thanx to every one for help
now my question
can i use the same type o2 gas regulater with n2 cylinder
i use this type with o2 cylinder

[kefah]

up

[jpsmith1cm]

thanx to every one for help
now my question
can i use the same type o2 gas regulater with n2 cylinder
i use this type with o2 cylinder

You would use a SIMILAR regulator, but not the SAME regulator.

The cylinder connection is different.

[kefah]

You would use a SIMILAR regulator, but not the SAME regulator.

The cylinder connection is different.

no the cylinder connection is the same

[jpsmith1cm]

no the cylinder connection is the same

Not on my cylinders.

There really isn't a reason that an oxygen regulator wouldn't work on a nitrogen tank and vice-versa.

I would be very careful about crossing them, though, because oxygen can be nasty stuff. If even a tiny amount of oil is present, you could see an explosion.

[kefah]

thank u for help

[Dehno]

Check data plate for test pressures. It will have low and high side pressures. Don't go any higher than the low side pressure.

[Tech83]

I thought oxy and nitro threads were different ie.. 1 left thread and 1 right, so they didn't get mixed or crossed up in hospital use!

[quiet mike]

???????????????????
i dont understand

There's not many guys here from your area of the world and he was asking if you were there because you were in the military, possibly not realizing you are actually from there.

[kefah]

There's not many guys here from your area of the world and he was asking if you were there because you were in the military, possibly not realizing you are actually from there.

thanks for explain
i didnt serve in the military
i work in thermal power plant

[davidj001]

oxy bottles have male connection at the bottle valve,,,nitrogen has a female connection at the bottle valve...both are righthand threads

I thought oxy and nitro threads were different ie.. 1 left thread and 1 right, so they didn't get mixed or crossed up in hospital use!

[jpsmith1cm]

Guys,

These are American threads.

They may well be different elsewhere in the world.

[kefah]

Guys,

These are American threads.

They may well be different elsewhere in the world.

thanks
in Iraq
we use the same thread cylinder for n2 and o2
so if i bought an o2 regulator
can i install it on n2 cylinder
without problem