Adding a pressure gauge to a regulator

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gunnergunzz

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I am going to put a pressure guage into the HO port of my regulator. Do i thighten as much as possible with a wrench or is there a certin torque neede?

Thanks in advance
 
Don't over tighten the spg to the HP port on the first stage... you may damage the threads and/or o-rings. All you'll need is to hand tighten the nut and then a 1/4 turn with the open wrench.

Afterwards, do a pressure check. If there is some leakage, turn the nut ever so slightly.

Check and make sure you don't have anything on the threads before installing. I had a piece of lint when installing my spg, which was a source of leakage when I pressure tested.

:14:
 
Scubapro recommended torque is 80 in-lbs. Basically, that is finger tight and anotjher 1/8th to 1/4 turn. Just enough to keep it from coming loose. Not much will kill a regulator faster than too much torque.

If there is a leak , do not tighten it more in an attempt to stop it. The o-ring makes the seal, not the torque. If it is leaking even at finger tight, the problem is with the o-ring, not the tightening torque.
 
Like the other said run it in and apply just a little wrench torque.

The threads are straight, not tapered like a pipe thread so what you feel is what you get. The o-ring is captured in a step and once the fitting surfaces meet the job is done. The application of air pressure thrust loads the treads and removes any concern of things coming undone.

Pete
 
If you turn it "as much as possible" you will be needing a new regulator.

Turn it hand tight, then snug it about 1/8 turn with an open end wrench that fits cleanly. Please do not use vice grips, pliers, hammers or other grotesque methods to destroy your nice new regulator.

Thank you,
N
 

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