Are bottles SUPPOSED to unscrew from regs?

[nospmas311]

red-loctited mine

I sent my tank to hydrotesters.com or yodaworks, whatever that site was in Washington. They told me to put the reg back on witha drop of red loc-tite so I did. Am I now screwed? My tank works fine...

[LaW]

Re: red-loctited mine

Originally posted by nospmas311
I sent my tank to hydrotesters.com or yodaworks, whatever that site was in Washington. They told me to put the reg back on witha drop of red loc-tite so I did. Am I now screwed? My tank works fine...

Putting on loctite is bad in a way because when you have to take the reg off again you really risk stripping the threads...

[Nachos]

The threads on the regulator have a hole so when you un-screw it to that point the hole will vent out the air in the tank before the reg comes apart from the bottle and becoming a rocket.

But it will be venting at 3000 or so psi.. that can't be good, lol

[Shane-O-Mac]

putting a drop or 2 of BLUE loc-tite will not harm anything. for me it is just a little bit of insurance. the only threads i have seen messed up is when someone used lots of red loc-tite. and it also depends on which red loc-tite you use! do it which ever way you want, but using BLUE will not hurt anything.
Shane-O

[RobAGD]

OK a few things.

First on tank/regs that do not see any toritional loading ( read Twisting ) you dont need to use anything on the threads. IF you putteh reg down at 70-80ft lbs of torque its not going any where and you dont have to worry about it air bearing off.

If you have a tank that uses a preset or screw in reg, you should use some sore of a sealant along with 70-80ft lbs of torque. I use a small dab of red or blue and I mean small.

Part of the problem with locking agent is that when people try to take the regs off at a later date they do not take them off correctly and damage the tank or the reg. There is a right way to do things and a wrong and the wrong way to typically the easier way.

-Robert

[Gadget]

I once managed to ruin a fibre-wrapped tank thanks to using too much loctite on the threads.

When fittings regs to bottles, if the reg is a non-screw in such as the flatline, Angel AIR etc, then I don't use any loctite and just screw the bottle on by hand and give it a decent twist - once there's pressure in there it's never going to move and like Rob said, they shouldn't experience any twisting - plus they tend to have much longer threads on the reg than pre-sets.

For screw-in regs (esp those with shorter threads), I use a VERY small dab of non-permenant loctite then tighten hard by hand.

Not had any nasty experiences from doing this and the bottles release fine for hydro testing.

[dansim]

If you have a tank that uses a preset or screw in reg, you should use some sore of a sealant along with 70-80ft lbs of torque. I use a small dab of red or blue and I mean small.(rob)

Originally posted by LaW




or how about none at all because its not needed? yeah thats what i thought

hmm, a little huh yeah thats what i thought, unh huh yeah

[BlackVCG]

I built a special tool to take off Flatline regs. and I put them back on at 35 ft-lbs.

Sweet Jesus, 75-80ft-lbs is bit excessive for even a screw-in bottle.

The real problem with using any thread locking compound is if the bottle comes back off, those bits of thread locking compound will get into the regulator and into the tank, and unless they're cleaned out properly, they can cause issues once it's reassembled.

[LaW]

Originally posted by BlackVCG
I built a special tool to take off Flatline regs. and I put them back on at 35 ft-lbs.

Sweet Jesus, 75-80ft-lbs is bit excessive for even a screw-in bottle.

The real problem with using any thread locking compound is if the bottle comes back off, those bits of thread locking compound will get into the regulator and into the tank, and unless they're cleaned out properly, they can cause issues once it's reassembled.

So how can I build a "special" tool? Do share!

[Beemer]

Holy cow You guys miss the safty issue. I tried to unscrew the reg when i picked up my bottle from the hydro guy and he said youll never break it loose by hand its torqued to 70 lbs just like Rob said. These guys have to be licensed and certified to do this. The place I go to does scuba tanks and the fire department stuff.
I can see a reg blowing off right now when getting a fill cause it wasnt torqued or screwed in all the way. Law suit waiting to happen. You dont need a sealer thats why theres an o-ring and tourque specs. Get it tourqued and dont
go back to that place. No way it should be hand tight.
Play Safe
Play Fair
Beemer

[afrankart]

Safety issue? There are threads there for God's sake. your reg will not blow off. think of threads this way,
<
>
<
>
<

When there is pressure, it pushes them together enough that there is no chance of removing it.

[i like tictacs]

Originally posted by afrankart
Anything more than 50 psi in your tank and you won't be able to unscrew the tank by hand. No worries, At 3000 psi, you wouldn't be able to get it off with anything.

I did. it got stuck in a max flow, because of the horrible construction. not cross threaded, just the pin was messed up. All 4500 psi went out in about 1 second. LOUD AS HELL, and there was a damn dust cloud thirty feet in the air coming from the bottom of our staging tent.

[afrankart]

Why were you trying to unscrew a Maxflow in the first place?

Let alone a tank full of air?

[TransMan]

I used the low strength loctite on my max-flo and it works fine i didnt put very much on it shouldnt be too hard to take it off if i need to but it keeps it from just coming off.

[Beemer]

Ya ok specs who needs specs. Not you But AGD sends em out tourqued to specs. Gee I wonder Why No I dont I know.
PLAY SAFE
Beemer