Ghostrider1979 Posted August 4, 2011 Report Share Posted August 4, 2011 A friend of mine used to do alot of diving and has offered to sell me his dive bottle to charge my rifle 7ltr and 260bar which makes no sense to me what so ever as I'm new to all this. He also says the check or certificate has ran out! So what I want to know is will it charge a BSA ultra which I'm buying also does it matter if it's checked or what ever he is on about seeings I'll only be using it to charge a rifle and not breath air. Lol I need as much info as you guys can give. Thanks. Quote Link to comment Share on other sites More sharing options...
Sx3 clay breaker Posted August 4, 2011 Report Share Posted August 4, 2011 7 liters is the capacity of air the bottle holds and 260 is the pressure should be fine for an ultra as it only 200 bar fill you will need a hydro test every two years if it's a diving bottle which costs around £30 you will also need a charging setup if it's a dive bottle hope this help rgds sx3 Quote Link to comment Share on other sites More sharing options...
gsm1968 Posted August 4, 2011 Report Share Posted August 4, 2011 A friend of mine used to do alot of diving and has offered to sell me his dive bottle to charge my rifle 7ltr and 260bar which makes no sense to me what so ever as I'm new to all this. He also says the check or certificate has ran out! So what I want to know is will it charge a BSA ultra which I'm buying also does it matter if it's checked or what ever he is on about seeings I'll only be using it to charge a rifle and not breath air. Lol I need as much info as you guys can give. Thanks. Yes If it fails the test it will be destroyed and you will have nothing to show for your money. Buy one that is in test and SAFE! 7lt is quite small, but depending on how much you shoot and how close the nearest dive shop is for refilling it will do fine. Quote Link to comment Share on other sites More sharing options...
mick miller Posted August 4, 2011 Report Share Posted August 4, 2011 (edited) Diving bottles that have been used for diving also tend to fail more often, the stresses of the metal expanding and contracting can take their toll on an old bottle. Whereas those used for airguns only are always at a constant pressure and less prone to failures. There is also the valve and whip to consider. I bought a new one recently from B.A.R. Price was pretty keen. Edited August 4, 2011 by mick miller Quote Link to comment Share on other sites More sharing options...
Clubshot Posted August 4, 2011 Report Share Posted August 4, 2011 It's either 207 0r 232 Bar Yes Will fill / Top up a Air Gun - But Very Few times per Charge 300 Bar Bottles are Dear and in Short Supply - World Manufactures can not keep up with World Demand of precharged Air Gun's Also having a Dive Head Din / A Clamp it will need Testing Every Two years Current Prices are around £40.00 if done on site - more if Sent away Pay's to get a Air Gun Head As can not be used in Water - Only needs Testing Every Five Years BOB/R Quote Link to comment Share on other sites More sharing options...
Dekers Posted August 5, 2011 Report Share Posted August 5, 2011 As Above, I've not seen a 260Bar Bottle Quote Link to comment Share on other sites More sharing options...
Andy H Posted August 6, 2011 Report Share Posted August 6, 2011 Out of the thousands I have tested I have never seen a diving cylinder with a working pressure of 260 bar, Maybe it is an industrial or oxygen cylinder re-valved and then used for diving. Quote Link to comment Share on other sites More sharing options...
dev237 Posted August 7, 2011 Report Share Posted August 7, 2011 If you have surface use only stenciled on the cylinder its only got to be tested every 5 years, according to the man that fills mine, and he has been dong it from new and is 5 yers old next year. Quote Link to comment Share on other sites More sharing options...
secretagentmole Posted August 10, 2011 Report Share Posted August 10, 2011 First thing to answer is exactly what is he selling you? Just the bottle? Bottle and gauge? Bottle, gauge and whip line? A test is easy, just find a PADI test centre and get asking, they will also charge bottles. No problems about age, our original cylinder was a 232 bar, 12 litre cylinder, we bought from the classifieds at £35, out of test, found a test centre, paid £25 for a full hydro test, bottle passed no problems! Sold it a few months later when we went to 300 bar 3 litre bottles for £120 still in test (with gauge and whip line). Sometimes out of test can be a right bargain! Quote Link to comment Share on other sites More sharing options...
webber Posted August 10, 2011 Report Share Posted August 10, 2011 Gas cylinders are my business. Without a current valid test the value of the cylinder is scrap only. You could take a punt on the cylinder passing the test. We charge £38 that includes VAT and a fill. We use an indipendant UKAS approved test house. The failure rate is between 5 & 15% so its a reasonable bet that it would pass, but there are no guarantees. Over the years I've seen scruffy cylinders that I've advised not to have tested pass; and prisine cylinders fail. We are based in St. Helens, but cylinders can be left at our Blackpool depot for transport to St.Helens. webber Quote Link to comment Share on other sites More sharing options...
imissalot Posted August 10, 2011 Report Share Posted August 10, 2011 Gas cylinders are my business. Without a current valid test the value of the cylinder is scrap only. You could take a punt on the cylinder passing the test. We charge £38 that includes VAT and a fill. We use an indipendant UKAS approved test house. The failure rate is between 5 & 15% so its a reasonable bet that it would pass, but there are no guarantees. Over the years I've seen scruffy cylinders that I've advised not to have tested pass; and prisine cylinders fail. We are based in St. Helens, but cylinders can be left at our Blackpool depot for transport to St.Helens. webber nice little plug m8 Quote Link to comment Share on other sites More sharing options...
The Essex Hunter Posted August 10, 2011 Report Share Posted August 10, 2011 A friend of mine used to do alot of diving and has offered to sell me his dive bottle to charge my rifle 7ltr and 260bar which makes no sense to me what so ever as I'm new to all this. He also says the check or certificate has ran out! So what I want to know is will it charge a BSA ultra which I'm buying also does it matter if it's checked or what ever he is on about seeings I'll only be using it to charge a rifle and not breath air. Lol I need as much info as you guys can give. Thanks. Check the tank details, as that figure of 260 BAR might well be the TEST pressure as that figure is a little obscure for a WP (working pressure). If it is the WP then your have a nice high pressure tank so long as it passes its test. If you are not sure, post a pic of the details on the crown of the tank. Tanks fail their test for a number of reasons, out of the ones I have tested over the years only one failed on Hydro test, pitting on the in/out side due to working in seawater and people failing to keep them with some form of pressure in them contributed to most of the failures. Tanks expand and contract in their lifetime of being filled and empted, the fatigue occurs when they are over filled! That will cause wear in the thread of the tank or valve. Air gunners would not know what a “wet pump” is as the don’t breath the air in the tank, and they have the tank filled with only very little taken out of it. The air should smell of nothing, It only smells if it is contaminated with oil/water or both! TEH Quote Link to comment Share on other sites More sharing options...
scrob Posted August 11, 2011 Report Share Posted August 11, 2011 If the dive bottle is filled to 230 bar, how many times can this be used to charge the air rifle? I am a qualified scuba diver myself and as soon as we start breathing the air out of a tank the pressure drops like a stone.. Surely one or two fills would take the bottle below 200 bar and then it is below what you need to charge the rifle again? Quote Link to comment Share on other sites More sharing options...
The Essex Hunter Posted August 11, 2011 Report Share Posted August 11, 2011 If the dive bottle is filled to 230 bar, how many times can this be used to charge the air rifle? I am a qualified scuba diver myself and as soon as we start breathing the air out of a tank the pressure drops like a stone.. Surely one or two fills would take the bottle below 200 bar and then it is below what you need to charge the rifle again? Air rifles work in cc your lungs work in litres! The general unfit male diver will use for example 25 litres a minute on the surface (SAC) so if you do the maths. 25 lts/min x 3ata (20mts) = 75 lts per min. See a shark or loose you mate and that will nearly double!! 12ltr tank @ 230 bar = 2760. 75 into 2760= 36 mins Add a reserve left in your tank, general fiddling around wishing you had paid more attention on your dive course and not had all those fried breakfast’s You will be down 20mins! To the air gun…….. 1 litre =1000 cubic centimetre, so your buddy air gun tank is 400cc? 0.4x207bar =83 litres! 1 and a bit breaths @ 20 mtrs Hope that helps…. TEH Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.