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Tim, I may be able to help you a little bit: M25X2 is the thread. You should imperatively use a Valve with M25X200 thread which are different from the 3/4 one. Service pressure is 200 bar (2900 psi) and 300 means that the hydrostatic pressure test is 300 bar. The water volume is 10 Liters. Which gives you 2 m3 of gas(70CuFt) Druckluft-TG indicate that the cylinders are coming from Germany. Probably Faber manufactured. I am not sure about the 10.92 meaning. It depends if you have a sign before, it could be the fabrication date. But I would suspect it is the cylinder weight 10.92 Kg (24 lbs) for the empty cylinder. You can check this using a scale. The use of burst disk is not common at all in Europe. For more information about it check with a german diver. I am not sure that this standard is acceptable in US. I hope it help. Bonnes Plongees Frederic At 08:32 PM 28/2/96 PDT, you wrote: >Hello, > >I picked up a couple of used European tanks here in The States, and am >looking for some information about them. The markings on the tanks are >as follows: > >M25X2 ISO >880 V 10.0 300 10.92 >Druckluft-TG 200 Bar > >They are about 16.5cm in diameter, and about 57cm tall. The valve threads >appear to be standard 3/4 inch, but are not. The diameter is about the >same (1.9cm), but the threads are different. > >I'm guessing these are 10 liter tanks, which at 200 bar is about 70cuft. > >Do you know anything about their buoyancy, full and empty? I picked up two >of them with bands, and a dual-outlet DIN manifold for $100 US. The manifold >has no markings on it, and no burst disks. Any idea who the manufacturer might >be? > >Thanks for your help, > >-Tim Bakken > ------------------------------------------------------------------------------ Frederic BADIER Dowell Schlumberger Schlumberger Riboud Product Centre 26 rue de la cavee (BP 202); 92142 Clamart Cedex, France Tel : (33) 1 45 37 20 00 Switchboard Tel : (33) 1 45 37 20 41 Direct Line Fax : (33) 1 45 37 25 13 Sinet : badier@cl*.do*.sl*.co* (or DSA::BADIER) ------------------------------------------------------------------------------
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