CF Tanks and Tank Valves or regulators discussion.

MSDS for all the paste sealants I have looked up shows they are flammable. I will stick with tape when needed. I am surely not an expert but if something is listed as flammable, I am not using it with high pressure air.

Have read of guys using loctite 592 sealant? Tape has always worked for me so no need to change. Guess the paste seemed like it could get into the gun and seeing flammable on the msds ended my thoughts of using paste.
 
As I stated before, when I had to replace my gauge on my tank (due to my error), I noticed there were no tape used on the AirHog fittings. When I questioned them about using plumbers tape for a seal, they stated they used a "paste" to seal the fittings. Paste is my word but thread sealant as stated by Skygear could be the correct terminology. They said that it doesn't happen all the time but using plumbers tape could fragment and pass to your gun lodging in the gun's valve. It does sound feasible that this could happen. The AirHog tanks all come standard with this "thread sealant". I was told that there had been some problems ( valves being plugged) in the past and that is why they eliminated the plumbers tape and had no more incidents since then. Again, I would talk with Air Hog about what they use on their fittings. I would also check Skygear's link. 
I am obviously not an expert on valves but just passing on what I thought to be some quality information from Air Hog. I am glad you haven't had any problem and I am not suggesting you remove all the plumbers tape from your set-up. I am only bringing to light that when purchasing a new set-up, changing a gauge, or trouble shooting a problem that you might want to reevaluate what is used to seal your fittings. I have no stock or vested interest in Air Hog, I just think they have researched their product very thoroughly and have some unique features on there set-ups like the free Dead head, non-liquid gauge, and valves without plumbers tape. Hope this was useful.
 
One last thing of note. Most of these 'pastes' or sealants are reactive until they are cured. That is a normal realistic expectation of anything of this nature. Fx and AoA clearly state that there is loctite/ thread sealant used in most of the components on these pcp's.

Watch that video. Great info on different products.

AoA wants 350 for a valve only on the dual gauge setup. Looks like the other guys ate my best bet right now. 230 is 120 more reasons to invest in it.
 
Yes, the loctite you refer to has to cure before putting the joint together. Sure it is good stuff but I am not patient enough to wait. Lol.

I was referring to plumbers dope and similar types as that is all I had at home and upon reading about them, took a pass and stuck with tape. Plus tape is cheap.

I do appreciate the heads up about the issue with tape NMshooter!! Had never heard of that issue. I just assumed that since both of my tanks and my Shelden compressor came with tape on the threads that it was fine and no need to change? I will order some of the loctite stuff and try it next time I have the need for sealant.
 
I think what it boils down to is.... what you feel is safe and right.

Now that would mean to me... taking all the FACTS and making a good judgement on what is best.

Like someone else had posted not everyone has your best interest in mind when $$ is involved.


So it is always good to do your research and follow the facts.


I personally have used the tape with no issues.

I have also had good success with anaerobic gasket maker by loctite.
 
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I wouldn't worry much about the teflon tape, unless it is improperly installed. Teflon is about as chemically inert as a substance can get. It will be around for a long long time because almost nothing makes a chemical dent in it. Physically though, it is soft and maleable. If tape is installed incorrectly so that it covers or overlaps the opening instead of just the threads, I could see it potentially getting torn loose, but the same could just as easily happen with a paste. Actually, I'd say it would be even more likely with a paste as you can't see what is happening inside the fitting when it is tightened. I could easily see some of the paste getting squished out of the end of the threads and getting knocked loose with regular use.
 
So. People can buy used fire department tanks off the net or your local fire house. Paintball tanks with the right fittings. Or the specific valved PCP airgun tanks.

Air venturie
air hog
omega
Benjamin
airtainksforsale.com


guess I'll make the OP into an information post with links to manufactures, wikis, and the like for people to get their heads wrapped around these things.
 
I'm right here now on this project. 

My list consists of this from Joe@ airtanksforsale.com

Guppy 18 cubic foot - dual gauge and dual quick disconnects ----- SO i have something to toss in a bag when I am hiking around. 
SCBA Hose assembly - Male Quick Disconnect ------ so I can fill the guppy
TJ3 Slow Flow valve with dual gauges and hose and dual quick disconnects ----- I like the dual gauges. This will go on one of the SCBA tanks. It will most likely reside in the truck. 
Firehouse Adapter to Foster Female Quick Disconnect ----- so I can fill the tanks at the fire stations ;)


Something else I considered. I could grab a regulator and use this to fill tires on the truck and run power tools too. But you's hadn't thought of that. I already have on-board-air (7gal tank @ 200psi dual compressors) and it works well. Just like to have redundancy. Not having to flip the switch or taking a 100' hose out of the truck and put her back away could be interesting. 

Still a little put off AoA doesn't have the Bobcat in stock. Another hunting trip is planned for the end of the week in FL and I was really hoping to be geared up with my own setup for this 2 week trip. 

 
Latest development. I have been reading and hearing about the new standard in the Scott 5.5 tanks. Yeah. Thats 5500psi! Luxfer is the manufacturer and I am working with a company for the pricing on them right now. 

http://www.luxfercylinders.com/products/scba-and-life-support-cylinders/689-lcx-hp-composite-cylinder-specifications

trying to get the tank only so I can put Joe's valve on it if they can find the proper burst disc for them vs the 5k psi one that they currently have on them. Otherwise, I might buy the TJ3 and source the burst disc myself. Even if I can only get it filled to 4500psi when traveling, I know my local firehouse will fill to 5500 for me whenever I am local. 

These are the same size as the current form factor we are used to dealing with, just a higher PSI/BAR/Minute rating. 

This excites me for some reason. MORE FILLS OFF A TANK NOW! 

Not on eBay, and only selling new right now from what I can find. Hoping that through Luxfer they are less expensive than through scott. Scott pricing is in the 1k-2k range. I'd be happy with tank only in the sub 1k range, closer to 500 and I would jump on it. 
 
I already have a bunch of them. Newer years too. With all the fittings and tank from Joe I am already in the 1k range. \\

Here is the thread with some pics of the tanks from scott. 

http://airgunnation.dev/topic/scuba-adapter-for-fills-at-local-fire-dept/
"jfrazier30"My best friend is a volunteer firefighter. He has offered to fill my tank for me, but neither of us know which adapter is needed.

Up till now, I have been using a local dive shop, but both shops in South Austin recently closed.

here is a picture of my tank.


and here is a picture of the tanks at the station.




jfrazier30 said:
Mystery solved!! I got him to send me another photo. The rubber cap is covering the threads they use to fill the tanks. The quick release is an auxiliary port they use as a buddy system in emergency situations. The picture of the adapter I included above WILL work.

 
If you get the tanks with valve, you can get either the CGA-347 only valve or the CGA-347 w/ quick disconnect nipple valve. Lesser expensive being the CGA-347 valve in the long run. Not having to buy the female connection saves money. However can still use either the nipple or the regular fitting independently from what I was told. 

https://www.fishersci.com/shop/products/scott-safety-5-5-scba-replacement-carbon-cylinders/p-4580389

The tanks at the top of the list are the standard CGA-347 valves without the quick disconnect. 
 
All the firehouse fill stations are 6k psi rated. I know 15 people in 8 different forestation's and they all confirmed their fill stations are 6k AIR. Most of the newer systems out there fill up to 6k. Any hydro testing facility will also have them. Some of the newer dive shops too. Nuvair, Coltri, Northshore, AmericanAirworks, Scott Safety, and many others out there. They have had these since 2011/12 and have been telling manufactures of the impending change. Most of the newer models are 6k capable, they just need the blowoff or whatever the safety component is called. 


Here is a short directory of some of them.'' http://www.globalspec.com/industrial-directory/6000_psi_air_compressors