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did you get any stats on:
Ocean Management Systems ("low pressure, high volume tanks")
PO Box 146
Montgomery, NY 12549
914-457-1617
i found some information - the 121 tank - capacity: 121 cu. ft (@2640 psi),
rating: DOT 3AA 2400 psi, 10% overfill allowed, dimensions: 29" high:: outside
diameter 8":: weight 45 lbs., buoyancy: neutral - calculated nominal with value
in sea water, material: 4130 chromium molybdenum steel, coating: black poly-
urethane over galvanized steel, suggested retail price: $490 w/o value
this was an ad some time ago, now they make 108's and 72's ... dive rite might
sell somekind of tank too .... who knows
attached is something i grabbed off the rec.scuba awhile ago ... you might
drop this guy a line and see what info he has gathered
peace
howie
deadhead@cs*.um*.ed*
From: bmay@ch*.co* (Brad May)
Newsgroups: rec.scuba
Subject: Scuba cylinders
Message-ID: <3462@ne*.ch*.co*>
Date: 21 Oct 91 17:03:43 GMT
Organization: Chips and Technologies, San Jose, CA
Lines: 54
A while ago, someone started a thread about what scuba cylinders were in use
in various countries, which got on a tangent about fast fills and fluid dyna-
mics and such. I am interested in a survey of scuba cylinders used in other
countries. To restart the thread, here is a summary of cylinders in produc-
tion in the U.S. (reprinted w/o permission, Discover Diving, May/June 1989).
I would appreciate if anyone with foreign cylinder experience could post
information to add to the table below. Good diving!
Notes: pressures are in psi, dimensions are in inches, weights and bouancy
are in pounds. In the U.S. steel tanks (other than the Genesis) are certi-
fied at manufacture for a pressure 10% higher than the rated "working pres-
sure"; and at hydro test, may be recertified for the 10% "overfill" or the
normal working pressure, depending on the results of the hydro test. (I'd
be curious to know if this is the practice in any other countries.) All
cylinders are sold with yoke fittings except Genesis, which uses 200 bar
DIN fittings. "Empty" bouyancy refers to the really empty state, not 500
psi reserve.
Steel Cylinders
---------------
Marketed Actual Overfill Working 10% Empty Bouyancy
Capacity Capacity Capacity Pressure Overfill Length Dia. Weight Empty Full
-------- -------- -------- -------- -------- ------ ---- ------ ----- -----
71.2 [1] 65.08 71.55 2250 2475 25.0 6.80 29.5 +3.5 -2.0
60.6 [SP*] 55.10 60.6 3000 3300 22.0 6.00 22.7 -2.5 -8.1
71.4 [SP] 65.15 71.39 3000 3300 20.4 6.84 29.0 -5.9 -11.3
71.4 [SP*] 64.90 71.40 3000 3300 25.4 6.00 26.0 -2.3 -9.5
75.8 [SP] 69.39 76.29 2400 2640 26.2 6.76 29.4 -0.1 -6.5
80.0 [Gen] 84.80 --- 3500 ---- 22.0 7.25 27.2 -1.0 -7.4
94.6 [SH] 86.63 95.25 3000 3300 25.0 7.00 39.0 -6.0 -13.3
95.1 [SP] 85.98 95.62 2400 2640 23.8 8.02 39.8 +0.6 -8.5
102 [Gen] 102.6 --- 3500 ---- 27.2 7.25 29.6 +0.5 -7.6
104 [SH] 96.01 105.55 2400 2640 25.5 7.80 44.0 0.0 -8.2
Aluminum Cylinders
------------------
Marketed Actual Overfill Working 10% Empty Bouyancy
Capacity Capacity Capacity Pressure Overfill Length Dia. Weight Empty Full
-------- -------- -------- -------- -------- ------ ---- ------ ----- -----
14 [LX] 14.05 2015 16.6 4.40 9.4 +1.5 -2.1
20 [CA*] 20.20 3300 16.6 4.38 10.4 -1.6 -2.7
60 [CA] 60.05 3300 19.1 7.25 27.7 -1.6 -5.6
63 [LX] 63.13 3000 18.7 7.25 28.4 +0.8 -3.1
65 [LX] 64.30 3000 22.0 7.25 29.4 -0.1 -5.0
67 [WK] 66.85 3000 23.0 7.25 32.2 -0.2 -5.2
70 [CA*] 73.65 3300 23.0 7.25 32.7 -0.3 -5.3
80 [LX] 79.87 3000 26.4 7.25 33.4 +3.8 -2.3
80 [CA] 80.00 3300 26.2 7.25 33.8 -0.1 -5.9
80 [CA*] 80.00 3300 24.5 8.00 34.5 -0.1 -5.9
90 [CA*] 88.03 3300 26.2 7.25 35.5 -0.9 -5.8
Distributors: 1="standard 72", SP=Scubapro, SP*=Scubapro Slim, SH=Sherwood,
Gen=Sherwood Genesis, LX=Luxfer, CA=Catalina, WK=Walter Kidde,
CA*=Catalina "Super" models
--END INCLUDED MESSAGE-------------------------------------------------------
I keep a miniature copy of this in my drybox. It has come in handy
several times.
--
Phil Antoine (antoine@Ra*.Du*.ED*) | How many times have you been at a
Duke University Medical Center | loss for words when somebody asks,
Radiation Oncology Physics | "What's it like down there ?"
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