Tricks for separating OPV from bladder flange assembly

[Moby_]

I'm trying to replace a broken bladder flange assembly but one side of the old assembly is stuck in the OPV. The OPV was screwed on the the assembly too tightly and it's just stuck. The problem is that it's difficult or impossible to get a good grip on the assembly side in order to remove it. I had the same problem with the elbow being too tightly screwed onto the assembly and completely destroyed the assembly trying to get it off with vice grips and STILL couldn't get it out! I might just have to replace everything but it's such a waste. Anyway, any advice or tricks to separate these pieces would be greatly appreciated.

 

[grantctobin]

Ultrasonic and hot water to try and blast loose any salt or mineral deposits, freeze it, and try again?

 

[TooManyHobbies]

Vinegar and warm water are my go-to for breaking up light corrosion.

 

[Moby_]

I don't think there's any corrosion or foreign debris in the threads, I just think the Hulk tightened it.

 

[abnfrog]

i hope you are using the tool for that ? also +2 for the ultrasonic and vinigear for salt

 

[Moby_]

There's a tool for that? Link?

 

[Moby_]

This? Bladder Flange Tool | Dive Gear Express®
If so, it's not clear to me how I'd use that to get the flange out of the OPV.

 

[abnfrog]

i have drilled 2 small holes on either side then use a hole spanner .....after its apart then glue the holes shut with JB weld , this is a last resort ive used this procedure 4 or 5 times to save buying new

 

[James79]

You could drill 2 small holes in the rim of the outer bladder, then use a pin spanner on it. Or file a small notch and attempt to tap it around with a screwdriver. I agree with others though, try a hot vinegar soak if you don't have an ultrasonic (I would make the vinegar 1:10 vinegar to water). Might loosen up any salt deposits from salt water wicking up into the threads.
Respectfully,
James

edit: Ninja'd by @abnfrog ! lol

 

[Moby_]

Great, thanks everyone. I'll try the recommendations and then resort to buying a new OPV if necessary.