Reviews/Gear/

Tank Specifications

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This page is in use with permission of Jon Breazile at In-Depth (http://www.fifthd.com/gear/intro.html) His site is full of information on technical diving, with gear configurations, and info on build your own. This site when completely finished looks as though it will be the place for technical diving information.
Thanks Jon.


Below you will find dimensions and buoyancy data for various tanks. Remember that buoyancy is different in salt water than in fresh, and some of the specs do not tell you what kind of water the buoyancy was measured in. Also, tanks vary from lot to lot, and they could be slightly different from one run to the next.


Aluminum Tanks

Luxfer Gas Cylinders / 3016 Kansas Ave. / Riverside, CA 92507 / (909) 684-5110
(Made of 6061 Alloy, 3/4-14 Threads)

 
Capacity
cu ft (liters)
Service
Pressure
psi (bar)
Outside
Diameter
in (mm)
Overall
Length
in (mm)
Empty
Weight
lbs (kg)
Internal
Volume
cu in (liters)
Buoyancy
Full (Salt)
lbs (kg)
Buoyancy
Empty (Salt)
lbs (kg)
13.2 (374.8) 3000 (207) 4.375 (111.1) 12.875 (327.0) 5.93 (2.69) 116.00 (1.90) -1.7 (-0.8) -0.7 (-0.3)
13.7 (387.1) 2015 (139) 4.375 (111.1) 16.500 (419.0) 5.40 (2.45) 172.00 (2.82) +0.7 (+0.3) +1.7 (+0.8)
19.9 (564.5) 3000 (207) 4.375 (111.1) 18.563 (471.4) 8.07 (3.66) 174.70 (2.86) -1.4 (-0.6) +0.1 (+0.1)
27.6 (782.0) 3000 (207) 5.250 (133.3) 18.000 (457.1) 11.38 (5.16) 242.00 (3.97) -1.5 (-0.7) +0.6 (+0.3)
30.0 (849.2) 3000 (207) 4.875 (123.8) 21.850 (554.9) 11.60 (5.26) 262.80 (4.31) -1.0 (-0.5) +1.2 (+0.5)
39.9 (1131.0) 3000 (207) 5.250 (133.3) 24.750 (628.5) 15.17 (6.88) 350.00 (5.74) -0.8 (-0.3) +2.2 (+1.0)
48.4 (1370.1) 3000 (207) 6.890 (175.0) 19.000 (482.5) 21.15 (9.59) 424.00 (6.95) -2.4 (-1.1) +1.3 (+0.6)
63.0 (1783.7) 3000 (207) 7.250 (184.1) 21.850 (554.9) 26.61 (12.07) 552.00 (9.05) -2.1 (-1.0) +2.6 (+1.2)
69.6 (1971.2) 3000 (207) 6.890 (175.0) 26.000 (660.3) 28.44 (12.90) 610.00 (10.00) -1.6 (-0.7) +3.6 (+1.6)
78.2 (2213.5) 3000 (207) 8.000 (203.2) 22.930 (582.3) 35.05 (15.90) 685.00 (11.23) -3.6 (-1.6) +2.3 (+1.0)
77.4 (2190.9) 3000 (207) 7.250 (184.1) 26.060 (661.8) 31.31 (14.20) 678.00 (11.11) -1.4 (-0.7) +4.4 (+2.0)
90.3 (2557.2) 3200 (221) 8.000 (203.2) 24.770 (629.0) 37.58 (17.05) 750.00 (12.29) -3.6 (-1.6) +3.1 (+1.4)
99.3 (2812.8) 3300 (228) 8.000 (203.2) 26.210 (665.6) 40.80 (18.51) 804.00 (13.18) -4.3 (-1.9) +3.2 (+1.4)

 

Catalina Cylinders West / 7300 Anaconda Ave. / Garden Grove, CA 92841 / (714) 890-0999
Catalina Cylinders East / 2400 Aliminum Ave. / Hampton, VA 23661 / (757) 896-9100
(Made of 6061-T6 Alloy, 3/4-14 Threads)

 
Capacity
(cu ft)
Service
Pressure
psi (bar)
Outside
Diameter

(in)
 
Length
(in)
Empty
Weight
(in)
Water
Weight
(lbs)
 
Volume
cu in (liters)
Buoyancy
Full
(lbs salt)
Buoyancy
Empty
(lbs salt)
100.0 3300 (228) 8.00 27.28 46.1 29.3 813 (13.3) -7.5 0.0
77.4 3300 (228) 7.25 25.14 35.0 22.6 625 (10.2) -5.8 0.0
60.0 3300 (228) 7.25 19.90 27.3 17.5 486 (7.9) -4.9 -0.4
77.4 3000 (207) 7.25 25.75 31.6 24.4 679 (11.1) -1.7 +4.1
67.0 3000 (207) 7.25 23.72 32.8 21.2 587 (9.6) -5.0 0.0
53.0 3000 (207) 7.25 19.00 25.6 16.7 466 (7.6) -4.0 0.0
40.0 3000 (207) 5.25 24.85 15.7 12.7 351 (5.7) -1.1 +1.9
30.0 3000 (207) 5.25 19.98 13.7 9.6 266 (4.3) -2.3 0.0
19.0 3000 (207) 4.37 17.12 7.5 6.0 167 (2.7) -1.2 +0.2
17.0 3000 (207) 4.37 15.52 6.8 5.4 149 (2.4) -1.3 0.0
13.0 3000 (207) 4.37 12.25 5.4 4.1 115 (1.9) -1.4 -0.4
6.0 3000 (207) 3.20 11.00 2.6 1.9 55 (0.9) -1.3 -0.9

 


Low Pressure Steel

Pressed Steel (distributed exclusively by U.S. Divers)
U.S. Divers / 3323 West Warner Ave. / Santa Ana, CA 92799-5018 / (714) 540-8010
(Salt or Fresh Water not specified for buoyancy data, 3/4-14 Threads)

 
Volume
(cu ft)
Service Pressure
10% Overfill OK
(psi)
 
Outside Diameter
(inches)
 
Weight
(lbs)
 
Height
(inches)
Buoyancy
Full
(lbs)
Buoyancy
Empty
(lbs)
95 2400 (2640 10%) 8.00 41.0 19.75 -4.75 -1.75
104 2400 (2640 10%) 8.00 46.0 23.94 -4.17 -1.00
120 2400 (2640 10%) 8.00 52.0 27.87 -3.80 0.0

 

OMS P.O. Box 146 / Montgomery, NY 12549 / (914) 457-1617
(Salt or Fresh Water not specified for buoyancy data and includes valve, 4130x Chrome Moly, 3/4-14 Threads)

 
Volume
(cu ft)*
 
Service Pressure

(psi)
Liquid
Capacity
(liters)
 
Height
(inches)
 
Outside Diameter
(inches)
Weight
w/valve
(lbs)
Buoyancy
Full
(lbs)
Buoyancy
Empty
(lbs)
13 2640 2 14.0 3.9 5.9 -3.30 -2.25
46 2640 7 23.0 5.5 17.6 -4.00 0.00
66 2640 10 21.0 7.0 25.0 -5.15 -1.67
85 2640 13 26.0 7.0 31.0 -6.70 0.00
98 2640 15 24.0 8.0 38.0 -7.73 0.00
112 2640 17 26.0 8.0 41.0 -8.00 -1.0
125 2640 19 29.0 8.0 45.0 -9.50 0.00
131 2640 20 30.7 8.0 47.0 -10.31 +0.75

* Gas Capacity: Values are calculated for PSIG and delivered volume (Van der Waals). For example a one liter
cylinder at 0 psig (ambient sea level) has a delivered volume of 0 liters at 70F. 1 cubic foot = 28.316846592 liters.

Heiser (distributed by Seagate Cylinders)
Seagate / 15238 Transistor Lane / Huntington Beach, CA 92649 / 800-281-7732
(Salt or Fresh Water not specified for buoyancy data, 3/4-14 Threads)

 
Volume
(cu ft)
Service Pressure
10% Overfill OK
(psi)
 
Outside Diameter
(inches)
 
Weight
(lbs)
 
Height
(inches)
Buoyancy
Full
(lbs)
Buoyancy
Empty
(lbs)
104 2400 (2640 10%) 8.00 N/A N/A N/A N/A
120 2400 (2640 10%) 8.00 N/A N/A N/A N/A

 

Faber (distributed by Scubapro and Seagate Cylinders)
Scubapro / 1326 Willow Road / Sturtevant, WI 53177 / 800-GO-SCUBA
Seagate / 15238 Transistor Lane / Huntington Beach, CA 92649 / 800-281-7732
(Salt or Fresh Water not specified for buoyancy data, 3/4-14 Threads)

 
Volume
(cu ft)
Service Pressure
10% Overfill OK
(psi)
 
Outside Diameter
(inches)
 
Weight
(lbs)
 
Height
(inches)
Buoyancy
Full
(lbs)
Buoyancy
Empty
(lbs)
71.4 3000 (3300 10%) N/A 29.00 20.47 -11.3 -5.9
75.8 2400 (2640 10%) N/A 29.50 26.18 -6.5 -1.7
95.1 2400 (2640 10%) 8.00 37.62 23.82 -8.5 -1.2

 


High Pressure Steel

Pressed Steel (120 cubic foot distributed exclusively by U.S. Divers)
U.S. Divers / 3323 West Warner Ave. / Santa Ana, CA 92799-5018 / (714) 540-8010
(Salt or Fresh Water not specified for buoyancy data, 7/8-16 Threads)

 
Volume
(cu ft)
Service Pressure
10% Overfill OK
(psi)
 
Outside Diameter
(inches)
 
Weight
(lbs)
 
Height
(inches)
Buoyancy
Full
(lbs)
Buoyancy
Empty
(lbs)
80 3180 (3498 10%) 7.25 32.50 19.88 N/A -7.22
100 3180 (3498 10%) 7.25 38.70 24.01 N/A -7.26
120 3180 (3498 10%) 7.25 45.30 28.64 N/A -7.22

 

Seagate 15238 Transistor Lane / Huntington Beach, CA 92649 / 800-281-7732
Cylinders manufactued by Faber
(Salt or Fresh Water not specified for buoyancy data, 3/4-14 Threads)

 
Volume
(cu ft)
Service Pressure
(psi)
 
Outside Diameter
(inches)
 
Weight
(lbs)
 
Height
(inches)
Buoyancy
Full
(lbs)
Buoyancy
Empty
(lbs)
80 3500 7.25 27.0 23.00 -8.0 -1.0
100 3500 7.25 33.0 27.25 -8.2 +0.5
120 3500 7.25 38.0 30.38 -1.0 +1.0

Questions or corrections to this site? breazile@netcom.com
Copyright 1998 Jon Breazile, All Rights Reserved

WARNING: Technical and overhead diving can be hazerdous if you do not have the proper training, experience, and equipment. These web pages should not be substituted for actual training from a qualified instructor. Although these pages contain a lot of information about SCUBA gear and diving, they do not teach you everything you need to know.


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