Scuba Double Tanks

At Mana Divers we currently have some great deals on scuba double tanks and other Scuba Diving Equipment. Please check out the listings below to find the best buys for your scuba double tanks today.


Vintage Nemrod Scuba Diving One Piece Double Tank Manifold Valve Made in Spain
Vintage Nemrod Scuba Diving One Piece Double Tank Manifold Valve Made in Spain
$86.99
Time Remaining: 2d 23h 58m
Buy It Now for only: $86.99

BROWNIES DOUBLE DIVER KIT WITH TANK 1ST STAGE AND TWO 2ND STAGES 3RD LUNG SCUBA
BROWNIES DOUBLE DIVER KIT WITH TANK 1ST STAGE AND TWO 2ND STAGES 3RD LUNG SCUBA
$699.95
Time Remaining: 3d 17h 48m
Buy It Now for only: $699.95

Highland 8 scuba diving double tank bands stainless steel
Highland 8 scuba diving double tank bands stainless steel
$100.00
Time Remaining: 4d 1h 24m
Buy It Now for only: $100.00

725 Deluxe Protected Double SCUBA Tank Bands Stainless w Rubber
725 Deluxe Protected Double SCUBA Tank Bands Stainless w Rubber
$59.99
Time Remaining: 5d 1h 24m

14k Two Tone Gold 3D Double Scuba Dive Tanks Pendant Charm  TCC 220
14k Two Tone Gold 3D Double Scuba Dive Tanks Pendant Charm TCC 220
$799.00
Time Remaining: 6d 1h 1m
Buy It Now for only: $799.00

Double DIN Convertible SCUBA Tank Manifold w Isolator by OMS
Double DIN Convertible SCUBA Tank Manifold w Isolator by OMS
$99.99
Time Remaining: 6d 1h 23m

Vintage Voit 3 4 in Scuba Tank Dive Yoke K Valve Double Hose Era
Vintage Voit 3 4 in Scuba Tank Dive Yoke K Valve Double Hose Era
$30.00
Time Remaining: 6d 3h 19m
Buy It Now for only: $30.00

Vintage Nemrod Double Tank Manifold Scuba Diving Valve
Vintage Nemrod Double Tank Manifold Scuba Diving Valve
$185.00
Time Remaining: 6d 14h 40m
Buy It Now for only: $185.00

10lb Uncoated V Weight for Doubles Perfect for Scuba Tanks
10lb Uncoated V Weight for Doubles Perfect for Scuba Tanks
$29.98
Time Remaining: 7d 13h 15m
Buy It Now for only: $29.98

8lb Uncoated V Weight for Doubles Perfect for Scuba Diving Tanks
8lb Uncoated V Weight for Doubles Perfect for Scuba Diving Tanks
$24.98
Time Remaining: 7d 13h 15m
Buy It Now for only: $24.98

Vintage Dacor CO2 Type Scuba Diving Vest With Double Pockets  Tank Holder
Vintage Dacor CO2 Type Scuba Diving Vest With Double Pockets Tank Holder
$15.00
Time Remaining: 7d 23h 56m
Buy It Now for only: $15.00

Scubapro Pure Tek System for Scuba Double Tanks
ScuBaPro Pure Tek System for Scuba Double Tanks
$719.00
Time Remaining: 8d 10m
Buy It Now for only: $719.00

sportsways J Valve Reserve 3 4 in Vintage Double Hose Era Scuba Dive
sportsways J Valve Reserve 3 4 in Vintage Double Hose Era Scuba Dive
$38.50
Time Remaining: 11d 2m
Buy It Now for only: $38.50

Highland Stainless Steel Tank Bands 8 for double scuba tanks
Highland Stainless Steel Tank Bands 8 for double scuba tanks
$100.00
Time Remaining: 13d 33m
Buy It Now for only: $100.00

Highland Stainless Steel Tank Bands 8 for double scuba tanks
Highland Stainless Steel Tank Bands 8 for double scuba tanks
$100.00
Time Remaining: 13d 35m
Buy It Now for only: $100.00

Highland Stainless Steel Tank Bands 8 for double scuba tanks
Highland Stainless Steel Tank Bands 8 for double scuba tanks
$100.00
Time Remaining: 13d 37m
Buy It Now for only: $100.00

Scuba Tech Diving Stainless Steel Twin Double Tank Mounting Bands Pair
Scuba Tech Diving Stainless Steel Twin Double Tank Mounting Bands Pair
$135.98
Time Remaining: 13d 23h 1m
Buy It Now for only: $135.98

J Crew Double Stripe Underwire Tank Scuba Blue Sz 8 Style 87447 New 110
J Crew Double Stripe Underwire Tank Scuba Blue Sz 8 Style 87447 New 110
$34.99
Time Remaining: 14d 5h 27m
Buy It Now for only: $34.99

Scuba Bands Double Tanks
Scuba Bands Double Tanks
$80.00
Time Remaining: 14d 23h 22m
Buy It Now for only: $80.00

Travel Double Tank Scuba Bands
Travel Double Tank Scuba Bands
$35.00
Time Remaining: 15d 14h 35m
Buy It Now for only: $35.00

Double Manifold Scuba Diving Tank Valve Yoke Dive Cylinder 3000 PSI
Double Manifold Scuba Diving Tank Valve Yoke Dive Cylinder 3000 PSI
$185.00
Time Remaining: 16d 16h 50m
Buy It Now for only: $185.00

VINTAGE DOUBLE SCUBA TANKS DOUBLES 1960 SPORTSWAYS
VINTAGE DOUBLE SCUBA TANKS DOUBLES 1960 SPORTSWAYS
$800.00
Time Remaining: 17d 12h 55m
Buy It Now for only: $800.00

VINTAGE DOUBLE SCUBA TANKS DOUBLES 1959 USN
VINTAGE DOUBLE SCUBA TANKS DOUBLES 1959 USN
$750.00
Time Remaining: 17d 12h 55m
Buy It Now for only: $750.00

New 0925 Sterling Silver Scuba Double Dive Tank Pendant
New 0925 Sterling Silver Scuba Double Dive Tank Pendant
$40.99
Time Remaining: 17d 14h 39m
Buy It Now for only: $40.99



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Interesting Video About scuba double tanks


Technical Scuba Diving: How to Assemble Double Tanks by Dive Rite

scuba double tanks

Excessive Air Pressure and Decompression Sickness

Adventure, thrill, and courage --- these are the things that define scuba diving. Scuba stands for Self-Contained Underwater Breathing Apparatus. This this kind of diving is the act of swimming under water with the use of self-contained breathing equipment and oxygen tanks. By carrying a source of compressed air, a scuba diver is able to stay underwater for longer periodsof time using simple breath-holding techniques. Scuba diving enables individuals to explore deeper undersea, rather than a few meters under the surface. However, this form of diving also carries with it the risks that other sporting activities possess. Recent studies show that the chance of dying while scuba diving is somewhat higher than boxing and is almost 40 times higher than playing football or water-skiing.

Many of the dangers that this activity posses are associated with pressure. A condition called decompression sickness usually occurs among scuba divers. As a diver breathes air into his lungs at the pressure that resembles that of the depth of water, pressure on his body also increases. The pressure increases rapidly underwater with the pressure doubling every 30 feet. After inhaling from a scuba cylinder at 30 feet, the act of rising to the surface results in the expansion of air in the chest as the air pressure declines. Because of this, the expanding air will need to escape, normally from the mouth or nose, bubbling its way to the surface. If the air passages become closed, the air may not be able to escape and will expand within the lungs, this may cause the lungs to erupt and cause life-threatening consequences. Air can escape from the erupted lung into the chest cavity, escape into the blood vessels, and carry bubbles to the heart and brain, which can be very fatal.  This condition may cause breathing difficulties, chest pain, and sometimes death. Some of the usual symptoms of decompression sickness may include joint pain (most common symptom and may last for days or weeks) extreme fatigue, numbness, light-headedness, and skin rash. Other symptoms may include weakness in the arms or legs, loss of consciousness, and chest pain.

To minimize the risk of decompression sickness, divers should do the following:

Dive and rise slowly in the water, and don't stay at your deepest depth longer than recommended. Scuba divers typically use dive tables that show how long you can remain at a given depth.
Do not fly within 24 hours after diving.
Don't drink alcohol before diving.
Avoid hot tubs, saunas, or hot baths after diving.
Make sure you are well hydrated, well rested, and physically prepared before you scuba dive. If you recently had a serious illness, injury or surgery, talk to your doctor before diving.

Certain individuals should avoid scuba diving because of the health risks they might encounter. People who have a defect, asthma, history of ruptured lung, or heart disease should ask the approval of doctors and other health specialists before deciding to dive. Individuals with groin hernia that has not been repaired should avoid scuba diving since expanding gas in the hernia may cause symptoms.  

Maintaining blood pressure and administering oxygen are some of the regular treatment for emergency sickness associated with scuba diving. The primary remedy for decompression sickness is the use of a hyperbaric oxygen chamber. This chamber is a high-pressure chamber that allows the patient to receive 100% oxygen. This remedy can reverse the pressure changes that allowed gas bubbles to form. The chamber also helps drive nitrogen back to its liquid form, which is usually achieved in a couple of hours. Most cases of decompression sickness can be treated with hyperbaric oxygen. Doctors may suggest repeated treatments if symptoms of decompression sickness still remain.

Like other sports and hobbies, the dangers of scuba diving can be minimized if individuals will take the necessary safety measures. Individuals who want to engage in this activity should seek the approval of doctors to avoid other unwanted ailments from developing.

About the Author

Learn about aching calves and thick calves at the Calf Pain site.

Combined gas laws question/double checking to see if I may have mixed up where I put volume and temp?

Here is the question- A scuba diver inhales 55.0mL of compressed air from a tank at 3.05 atm of pressure and 9*C. What is the pressure of this air in his lungs at body temp (37*C) if the air expands his lungs by 145.0mL?

Step 1=converting celcius to kelvin 9*C+273=282K 37*C+273=310K
Step 2= P1=3.05atm, V1=55.0mL, T1=282K, P2=?, V2=145.0mL, T2=310K
Step 3= P2=3.05atm x 55.0mL/145.0mL x 310K/282K=1.27 atm

My question is if my placement of the V1 V2 T1 and T2 are in the correct places or if I may have gotten the wrong answer because they should be switched up differently.

I agree with you.
Here's my working, just in case you wanted to check.

P1V1 / T1 = P2V2 / T2

P2V2 = (P1V1 / T1) x T2
P2 = (P1V1 / T1) x T2) / V2
P 2 = ((3.05 atm x 55.0 ml / 282.15 K) x 310.15 K) / 145.0 ml
P2 = 1.27 atm

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