I can’t get above 200 bar
I topped off the scuba tank, got new o rings and still I cant get past 200 bar
I start leaking at the the tank/adapter connection.
What’s a good fill adapter for SCUBA?
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I’m giving some serious thought about getting the right set up, maybe
a Shoebox and a carbon fiber tank.
There is no point in going over 220 Bar. The reg has hard time coping with the exceeding pressure anyways. You will only get like one third of the shots from 300B to 200B than you get from 200B to 100B. You´ll also get ONE fill upto 300B from a 300B Tank – the next one will be around 290, the next 270 and rapidly sinking.
The moral of the story ; Stop at 220 (i only fill mine upto 200-210) and live happily ever after. The Cricket Airtube can handle the 300B pressure but the reg won´t (it´s all but useless untill you´re down at 210-220) and it´s just waste of air and money.
More shot count usally leaks if on the cricket with such high fills power will drop with such high fills although tne cricket says 300 bar fill this isnt advisable 250 and under s best fill pressure as i say leaks are more probable erratic reg workings ect ect unless upgraded orings are fitted if standerd 250 bar and under gives better reults
So, what could I expect at 300 bar? More shot count? velocity? energy?
I’m giving some serious thought about getting the right set up, maybe
a Shoebox and a carbon fiber tank.
You can always ask the dive shop to let the bottle rest after fill. When I was diving I always asked them to let it rest and then top it off.
You can get a 6k nitrogen tank but it seems gas company rips most people off. I use regular nitrogen tank 2200 psi and use a booster to get me 4500 psi
I see said the blind man,
So 300 bar is 4500 psi?
I have several oxygen, Co2 and argon tanks, whats this about nitrogen.
all the tanks I have only fill to 2200, do they fill nitro higher?
Dear ‘Knuckle…
If your scuba tank is aluminum, 80 cu ft, no scuba shop will fill it past 3000 psi and you will be lucky to get that much.
Here’s the deal…a scuba compressor pumps air HOT into the scuba tank. Unless you allow the tank to cool, then top it off, the hot air will cool and you will get 2700 to 2800 psi at most per fill. Better shops have refrigerated water to submerge tanks in while being filled. They are far and few between, mostly on the coast. Other shops will just drop the tank into a 55 gallon trash can half filled with ambient temperature water and what you get is what you get.
The solution is to buy a 100 cu ft aluminum tank which can be filled to 3300 psi, but you better be watching while it’s filled. Better yet, have a screw-on pressure gauge to check it before you leave the shop. If you buy a steel tank, they can be filled to 3440 psi, again…you will be fortunate to get it that high. Most scuba shops don’t like to run their compressors over 3000 psi.
I watched Ebay for a 150 cu ft steel tank, which is the largest dive tank made. They are reasonably cheap because most people don’t know what they are buying when they get a tank that large. It weighs a ton, is bulky, awkward to handle, and back-breaking to carry to the dive site. It is, however, the best deal a pcp owner can get, short of the 4500 psi fiber tanks which cost a small fortune. The steel 150’s can be had in the $250+ range, depending on age.
You can get a lot of fills from a 150 steel tank, especially if you can get the shop owner to give you an honest fill. In Florida, some shops will do a “Cave Fill” which takes the tank up to near 4000 psi. Remember these tanks are hydro tested at 5/3’s capacity. So they get upwards of 5000 psi just to pass the hydro test every five years.
Unless you shoot a whole lot, a large steel tank is your best bet. Otherwise, consider renting a large nitrogen tank from a welding supply shop.
O=rings are the primary source of leaks from a K-valve fill hose.
Regards,
Hoot:
Leaking is a problem but 200 bar is 2900 psi. Scuba is only filled to 3300 psi max? You’ll always be 200 psi below fill tank pressure so if you’re at 3100 psi that’s all you can expect.
Hey moose I have a scuba yoke fitting that goes on a scuba tank. … Just the yoke. You of course would need a gauge and a bleeder and hose too. But if the yoke is all that you need I have one it is almost new. I got it from joe brancato it’s rated at I think 4500 or 5000 psi it’s a nice one . Pm me and I’ll let yah have it for 25bucks shipped
Is this what your looking for? its only rated at 232 bar.
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Right on, what would I do without you guys?