I'm about to buy a set of 232 bar 12's.
Does it have to be captured o-rings for DIR or is that just "optimal". Is optimal mandatory?
I checked on the GUE website but could only find this...
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Tanks/Cylinders: Students may use dual tanks/cylinders connected with a dual outlet isolator manifold, which allows for the use of two first-stages. Students may also use a single tank/cylinder with a K, H, or Y-valve.
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