What is the chance these are 3/4"-14?

[rhwestfall]

Steel 72 (2250) - Norris - born on date: 1974

Steel 72 (2250) - PST - born on date: 1891

They are in someone else's possession right now, and they are not knowledgeable in them...

 

[Scared Silly]

Good as by the 70s most cylinders were made with 3/4 - 14 threads. But have whoever has them take some more photos - if the valve threads can not be seen they are 3/4, otherwise if one can see the threads then 1/2.

 

[rhwestfall]

best I can get from him:

 

[rhwestfall]

 

[grf88]

They appear to be 3/4" - 14 but I don't see any Transport Canada (TC or CTC) markings on them in the photos.

 

[guruboy]

Those are 3/4

 

[rhwestfall]

Thanks all. Seems I shall close the deal.... While not the "matched pair" I was seeking to but together a set of vintage doubles, it gives me 2x the chance to find a mate...

These are not easy to come by around here...

BTW - odds of lined? Seeing they have been maintained (in current hydro), I'm betting they are likely not....

 

[grf88]

You might want to check to see if they have Transport Canada markings or if your fill station will fill them without as I believe you are in Quebec. Cylinders used in Canada should have a hydro test by a Canadian facility to be legal but probably not as much of a hassle.

 

[rhwestfall]

I am not in Canada (though I actually can look south and see it)...

 

[grf88]

I am not in Canada (though I actually can look south and see it)...

All is good then.