Am i getting conned???

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camerons

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My local dive shop has changed 3 tank valves of mine over the last year saying they did not pass some test. I have 4 tanks from different manufactures bought in england. They are only 2.5 years old and have only done about 20 dives!!!! Apparently they failed on some 3/8th test with the threads. Am i getting conned? How long should a tank valve last? Thanks, really appreciate some help on this.
 
ummm Im guessing they have diffrent thread pitch or mismatched threads. If you have imperial (uk) thread pitch and install american this is dangerous. There was a thread a tank that blew up in hawaii a few months ago because of this.

If you filled in the rest of your profile and I know where you were from it would be easier to answer...

ps-welcome to the board.
 
I am in scotland and the tanks were purchased here.
 
I am in scotland and the tanks were purchased here.

Silly question perhaps, but did you buy the valves/tanks from the shop that now wants to replace them?
 

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