Double / twin piston cold water kit for 72x first stage

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divezonescuba

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Scuba Instructor
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Houston, Texas
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Hello:

Does anyone have experience with installing these? They are relatively new and have no instructions. But they do have a lot of legal literature and literature telling you to follow the instructions.

First the large oring does not seem to fit correctly with the adapter ring.

There is only one oring for the two pistons, both of which have oring grooves. I am assuming that even though the female piston halve does have an oring groove, it does not really use an oring because otherwise it would not fall out to allow the spring to be adjusted.

So I am assuming that the male piston Is against the main diaphram and does contain the oring.
 
pictures might be nice
 

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