Aluminum scuba tank sizes. The weight of a scuba tank can range from 7 pounds to 90 pounds, depending on the size and material. 6 days ago · The distinguishing piece of equipment for a scuba diver is their scuba tank. Here goes: Scuba tank size and buoyancy calculator All feedback is very welcome! Sep 3, 2022 · The best scuba tanks including tanks of all sizes, pony bottles, steel tanks, aluminum tanks, plus things to consider when choosing the best tank for you. Experienced divers prefer the trim characteristics of the aluminum 40 size cylinder for deco, bailout and sidemount applications. It can be very difficult even for a seasoned pro to make a decision as to which type of tank they will need. Key Features Ensure safety on every dive with this Catalina pony bottle tank, your reliable backup air source. Typical Weights of Scuba Tank and Gear Components Air tanks can vary in weight depending on their size, but a common aluminum tank weighs around 30 pounds, while a steel tank can weigh up to 40 pounds. Feb 2, 2021 · Some of the things you'll need to consider when choosing the tank that's right for you will include the size/capacity of the tank, the material (aluminum vs. The volume of the SCUBA tank and the above parameters (pressure) will interact together to contain a defined amount of breathing gas. ft Aluminum Tank,4500psi Scuba Cylinders,Diving Bottle with Scuba Valve 3 $25900 List: $284. At Scuba. Steel tanks are typically more expensive than aluminum tanks. 1 liters) and made from either aluminum or steel. This is just the simple list with the water volume added and all numbers updated. Renting your tanks leaves the burden of maintenance on the dive rental shop; the drawback is you run the risk of the shop being out of rental tanks, especially on popular dive weekends. 25 inches. The system can be filled from a regular scuba tank. The choice between aluminum and steel tanks involves considerations such as buoyancy and weight preferences. Ultralightweight aluminum tanks are lighter than Apr 16, 2024 · 【Product Capacity】TUDIVING aluminum bottle is a large-capacity tank with a capacity of 11. Nov 15, 2023 · An in-depth guide to understanding, maintaining, and safely using your scuba diving tanks for the best underwater adventures. Sometimes smaller tanks contain more air than larger ones. Find your Scuba Tank at Divers Direct. The Thunderbird 40 cu ft Aluminum Cylinders are made from 6061 alloy, an aluminum magnesium-silicon blend that improves durability and performance. steel), the physical weight of the tank, the buoyancy characteristics of the tank in the water, how the tank affects your trim, and, of course, the cost of the tank. Oct 7, 2019 · I was trying to conceptualize how much air is inside a standard Aluminum 80 cylinder at 3000psi. If you're seeking 4500 PSI tanks, I recommend contacting us directly to discuss your needs. Now to answer your question, Scuba tanks range dramatically in weight from a petite 7-pound aluminum pony bottle to a hefty 90-pound steel behemoth, with standard 80 cubic foot recreational aluminum tanks weighing 30-50 pounds empty and 50-75 pounds when filled with air at pressures of 230 to 300 bar (3,000 to 4,500 psi). With their lightweight yet durable construction, these tanks are built to withstand the rigors of deep-sea exploration while providing you with a SCUBA Cylinder Specifications Compiled by Huron Scuba, Snorkel & Adventure Travel Inc. Despite knowing this, if this is your first time shopping for a scuba cylinder, you will likely be overwhelmed by all of the factors you need to consider before purchasing one. Working pressure, volume, density. To withstand this high pressure, cylinders are carefully engineered from two common materials: steel or aluminum. In the past, the most common type of valve found on aluminum and low-pressure steel scuba tanks was the classic yoke K-valve. Based on an old thread (Untangling cubic feet, litres, PSI, bar for scuba tanks and RMV / SAC calculations) it says that the actual volume inside of an Aluminum 80 is approximately 11 liters. 3" (13. Only aluminum tanks on this page, or visit Steel Tanks (Cylinders). Rely on the Sep 27, 2023 · Remember that aluminum tanks are lighter and steel tanks can hold more air. com and find the right fit for your next dive adventure. 3 in Choose from a selection of scuba tanks including steel and aluminum in a variety of sizes and low and high pressure ratings. Find out the dimensions, weights and capacities of different scuba Products L6X® – aluminum type 1 cylinders In 1988, Luxfer introduced SCUBA tanks manufactured from L6X®, a proprietary formula of aluminum alloy 6061-T6 developed by Luxfer metallurgists to provide superior corrosion-resistance and dependable performance in the most demanding underwater environments. Aluminum scuba tanks are lighter than steel, durable, and long-lasting. Nitrox Ready Valve: Up to 40% O2 compatibility. The diving tank: A fundamental element to carry out your dives These tanks come in various sizes, materials, and configurations to suit different diving needs and preferences. One essential piece of gear is the 3000 PSI Scuba Tank, which holds compressed air for breathing underwater. 1 lbs. This aluminum scuba tank's convertible valve adapts to both Yoke & DIN regulators for convenience. 3000 PSI Rating: Reliable Scuba Tank Performance. The 40 Cubic Foot (5. Aluminium S40 - 5. Ann Arbor, MI: (734) 994-3483 The information below was compiled from a variety of sources, including Luxfer, Pressed Steel Tank, Catalina, and OMS. Making it a great choice for a compact bail-out tank. 76 kg) is negative 0. For rebreathers, visit CCR Cylinders & Valves Thunderbird brand (formerly Metal Impact and Luxfer) Aluminum 80 cubic foot primary SCUBA cylinder (aka SCUBA Tank) preferred by experienced sport and technical divers. This Catalina tank's convertible valve adapts to both Yoke and DIN regulators for convenience. Mar 3, 2024 · Scuba tanks come in various sizes, typically measured in cubic feet or liters, with the most common sizes being 80 cubic feet (approximately 11. From 0,2 l to more than 15 liters, there is something for every taste and need. Determine what size tank or cylinder you need. We use cookies to provide you with a great experience and to help our website run effectively. Younger or smaller divers, however, may struggle with the size and weight of an aluminum 80 and instead be more comfortable with a shorter cylinder, such as an aluminum 63. It puts the scuba in scuba diving. Tank capacity is normally measured in cubic feet. Are Steel Tanks Heavier than Aluminum Tanks? Yes, steel tanks are generally heavier, but they offer better buoyancy control and can hold more air in a smaller size. Divers who often travel with their pony bottle select this size to stay light weight and compact. Aluminum 80 With Valve Tank includes Sherwood Pro Valve, Current VIP Sticker** and Current Hydro. This blog will help you understand the different types of scuba dive tanks, their features, and which ones are best suited for your diving needs. 5 inches in height and 8 inches in diameter. Compare aluminum and steel cylinders and download an excel version of the. With that, you can figure out the true capacity of the tanks -- and not just with air. Buy an aluminum or steel scuba tank today and open the way to exploring the water. May 14, 2024 · Looking to dive into the world of scuba tanks? Our comprehensive guide covers everything you need to know before making a purchase. Sep 3, 2022 · The best scuba tanks including tanks of all sizes, pony bottles, steel tanks, aluminum tanks, plus things to consider when choosing the best tank for you. Steel tanks versus aluminum tanks. Jun 11, 2014 · Here's why you should care about what's stamped on the the outside of a scuba tank and how to decipher what it means. USA-made aluminum gas cylinders for SCUBA See our full line of SCUBA cylinders, available in a wide range of size and weight options. The scuba tank small size allows for easy integration with your drysuit setup, ensuring a comfortable and hassle-free diving experience. Types of scuba tanks There are different types of scuba tanks on the market: Mono tank Double Tanks Pony Nov 13, 2023 · Key Takeaways: Scuba tanks come in various sizes and weights, offering divers options based on their individual needs and preferences. The Diving tank is an essential piece of scuba diving equipment that allow divers to explore the underwater world by supplying them with compressed air to breathe. 2, 15, and 18 liters. 46 cm) diameter. We offer high quality Scuba Tanks & Accessories at best price online. This tank is the top choice for dive shops and dive resorts because they can buy them in bulk for cheap. The information is believed to be accurate, but is not guaranteed. There are pros and cons to each tank choice and while Aluminum tanks are great for budget divers, we will mainly focus on steel tanks. Yoke valves versus DIN valves. Jul 28, 2024 · New to scuba diving? Learn how to choose the right scuba tank size for your dives. Choose from our selection to find the perfect aluminum scuba tank that meets your diving needs. Best Scuba Tanks & Accessories for sale at Divers Supply. 7 liters) Aluminum Tank is a small compact cylinder that is great for use as a stage bottle for decompression and safety stop use. When it comes to diving, no other scuba gear is quite as critical to your survival, so you need the best scuba tank for the job. When selecting a Scuba tank, factors such Jun 27, 2018 · Before you buy your own air cylinders, take a look at tips you'll want to consider when choosing steel vs aluminum scuba tanks. Or why does my Aluminum 80 SCUBA tank only hold 77 cubic feet of air? ©2018-2020 by Mark Derrick, Gas Blending Instructor at Dive Gear Express Technical divers need to know exactly how much breathing gas they have as they enter the water, because if they didn't plan correctly then bad stuff can happen. These steel diving cylinders are used mainly as a redundant air source or used in rebreathers as diluent and oxygen tanks. High-pressure cylinders are relatively small, yet very strong containers that hold large volumes of compressed gas. Order yours today! At 100+ feet deep, it’s important to have scuba equipment you can trust. 8 cu ft Scuba Tank: Ideal for pony bottle use. Pony Bottle Tank: Ideal for Redundancy & Safety. Buy your Aluminum 80 Scuba Tank Package from Divers Supply. 8" (63 cm) tall, with a 5. Whether you're looking for a primary tank or a dependable backup, aluminum dive tanks deliver long-lasting performance with less maintenance. A superior alloy makes a superior aluminum scuba tank Catilina Gas Cylinders offers a broad range of high-pressure aluminum scuba cylinders. Let’s start with the type of materials that are used in The Thunderbird 6 cu ft Aluminum Cylinder is the smallest aluminum pony bottles available. Learn how to choose your scuba tank By using this website, you agree to our use of cookies. When buying a scuba tank (or diving cylinder), remember that size is not always reflective of their capacity; some small models contain more air than bigger ones. An aluminum 63 cft may be a better fit for a younger and shorter diver while Scuba tanks come in various sizes, but the 80-cubic-foot tank is the most commonly used, especially for recreational diving. Dec 30, 2022 · The top 12 best scuba tanks reviewed here are able to help you stay underwater longer, as well as offer different price tags for all budgets. This Catalina has been manufacturing aluminum SCUBA cylinders for over 30 years, and today is a leading supplier in the global SCUBA cylinder market. We have the largest selection of aluminum and steel scuba diving tanks for sale right here. The length of these tanks range in the area of 21-26 inches and are generally well handled by beginners and novices. Luxfer Aluminum Cylinders Cleaned at the factory for use of 100% oxygen (excluding valve) A superior alloy makes a superior aluminum scuba tank Luxfer Gas Cylinders offers a broad range of high-pressure aluminum scuba cylinders, as well as the world’s only hoop-wrapped composite scuba cylinders. Premium aluminum SCUBA tanks for diving enthusiasts. This tank size holds approximately 11. I'm including a PDF here. Jan 5, 2019 · The most important is the water volume of the tanks. 5% Available in Multiple Colors In 1988, Luxfer Introduced Scuba Tanks Manufactured from L6X Proprietary Formula of Aluminum Alloy: 6061-T6 Superior Corrosion-Resistance and Dependable Performance Preferred Choice by Military, Commercial and Technical Divers Worldwide Industry Standard Cylinder Thread Size: 0. 750-14 NPSMAluminum Alloy DesignWon't Rust Like Steel Scuba cylinders are filled to air pressures ranging from 2000 to 3500 psi (pounds per square inch). Shop Catalina 80 Cubic Foot Aluminum Tank with Pro Valve! Lightweight, durable, and Nitrox ready. Available in various sizes and configurations, aluminum scuba diving tanks are a versatile choice for everything from warm-water dives to training sessions and travel. You have aluminum and steel. This is for quick and easy reference. Steel Cylinders Steel is stronger than aluminum, which allows the walls of steel cylinders to be thinner than aluminum tanks. A standard aluminum 80-cubic-foot tank typically measures around 26 inches in height with a diameter of 7. Mar 21, 2022 · Sizes The standard aluminum 80 is an economical cylinder that offers an appropriate amount of breathing gas for most divers. Key Features Dive confidently with this Catalina 100 cu ft aluminum scuba tank, built for reliability! Enjoy years of service; this durable aluminum tank resists corrosion in saltwater environments. 9 lbs. Shop with us and save your money. In 1988, Luxfer introduced scuba tanks manufactured from L6X®, a proprietary formula of aluminium alloy 6061-T6 developed by Luxfer metallurgists to provide superior corrosion-resistance and dependable performance in the most demanding underwater environments. Explore our durable, lightweight cylinders trusted by divers worldwide. Smaller tanks are usually for an emergency backup. This chart is a compilation from many sources. We offer high quality Aluminum 80 Scuba Tank at best price to save your money. Standard aluminum tanks are commonly used in recreational diving and offer a balance of capacity and weight. Scuba diving is an exciting and adventurous activity that requires specialized equipment to ensure safety and comfort. Scuba Diving Cylinders by Size and Use Spare Air - emergency escape system supplied with a breathing regulator valve. On the other hand, a steel 100-cubic-foot tank may have dimensions of approximately 28. If you're a serious diver who is ready to Our aluminum scuba tank collection offers the perfect blend of lightweight design and durability for divers. With a range of capacities to suit various dive conditions, these aluminum scuba tanks are ideal for both recreational and technical divers. You can just accept that the names used to describe some SCUBA cylinders have a weak TUDIVING-11. Also, Luxfer produced a limited run of SCUBA cylinders that are a composite design: aluminum shell with fiberglass hoop wraps. They range in size from a little over 9" tall by 2" across to over 22" tall by 8" in diameter. After we get certified though, many of us splurge on fins, masks, and dive computers, but not on tanks. If you buy keenly, the diving tank will last a long time. Divers who quickly consume gas may benefit from a larger-capacity cylinder, such as an aluminum When it comes to scuba diving, choosing the right dive tank is crucial for ensuring a safe and enjoyable underwater experience. 1L/80cu ft/677cu in, integrated air filling system with scuba valve. Browse Types - Aluminum, Pony Tank. It doesn't look very fancy since I've made it compact enough to use on a smart phone. To my knowledge, there are no aluminum tanks for scuba diving, including Catalina diving tanks, rated to 4500 PSI. Looking for the perfect aluminum tank to enhance your scuba diving or snorkeling experience? Look no further! Our wide selection of top-quality aluminum tanks is designed to meet the needs of both beginners and experienced underwater enthusiasts. 5. Shop our full selection of aluminum scuba tanks at Scuba. We offer the broadest portfolio of high‑quality aluminum gas cylinders to safely serve compressed gas market needs. Feb 24, 2021 · Have you ever wondered what all the markings on your SCUBA tank mean? It's easy once you know what everything means to identify different cylinders and their characteristics. We can special order in other tanks, contact us for pricing and availability. Sep 7, 2018 · Scuba Tanks (Cylinders) BasicsWhat size tanks do you need? Because a cylinder may meet the needs of most divers doesn’t mean it meets the needs of every diver. Nitrox ready up to 40%, this scuba tank enhances your underwater adventure safely and reliably. 1 liters of air, offering an average dive time of around 45 minutes, which suffices for most recreational divers. Convertible Valve: Adaptable for yoke or DIN regs. When using a Worthington scuba cylinder, the last thing a diver […] do you have tanks that can go to 4500psi Follow These are Catalina tanks for scuba diving, rated up to 3300 PSI. Pro Valve Included: Convertible, Nitrox Ready Design. You've decided you have enough compelling reasons to own your own cylinder (s) (tank / bottle), instead of continuing to rent. These tanks, with lengths ranging from 21 to 26 inches, are particularly manageable for divers with less experience. It all depends on the models. Buying a Scuba Cylinder Help Buying the Best Diving Cylinder (Tank / Bottle) So you're ready to buy your first scuba diving cylinder. Find precise dimensions, capacities, and technical data for all models. Shop aluminum scuba cylinders for your next dive at Divers Direct! Apr 16, 2012 · In addition it shows the buoyancy of the tank when full/empty, adjusted for steel/aluminum tank and fresh/salt water. Enjoy a lightweight scuba experience; this aluminum 53 cu ft tank weighs just 25. Jan 9, 2024 · Dive confidently with the best scuba diving tank cylinders. These SCUBA cylinders are used for all diving applications: commercial, scientific, military, police, and recreational divers around the world. 7 lbs empty. It’s important to note that while the standard size is advertised as 80 cubic feet, it actually holds slightly less There are two different high-pressure steel SCUBA Tanks in wide use, the newer 3442 psi cylinders with 3/4 NPS threaded opening and the older 3500 psi cylinders with 7/8 UNF threaded opening. But I'm also including the spreadsheet I created as well. These aluminum tanks are Nitrox ready, supporting mixes up to 40% oxygen for enriched air diving. But 11 (70) Catalina Aluminum Tank: Lightweight & Durable Build. The tanks hold breathable air under immense pressure and make it possible for us to breathe underwater. 7-litre scuba diving Oct 23, 2024 · How Long Does an Aluminum Scuba Tank Last? With proper care, aluminum tanks can last over 20 years, though they may develop cosmetic wear and tear over time. Dec 10, 2020 · The standard aluminum 80 cubic foot cylinder is the most popular size for recreational divers worldwide. The most commonly used scuba tank size is the standard aluminum 80-cubic-foot tank, which can last anywhere from 30 minutes to 1 hour at a depth of 60 feet for an average diver breathing normally. Most recreational divers find a common aluminum 80 to 100-cubic-foot tank is sufficient for their needs. However, you can purchase a steel cylinder in various sizes, such as 3, 5, 7, 9, 10. There is a lot of information listed on the crown of the tank and the order in which the information is listed varies from tank to tank, but the codes are standardized and easy to read if you know what to look for. Corrosion-Resistant Aluminum: Ensures tank longevity. 7 Scuba Tank Size Chart - I'm including a pdf here. When it comes to complexity of scuba diving, Scuba Tanks are the poster child of that complexity. Multiple Sizes: 6, 13, 19, 30, & 40 cu ft Options. The 80-cubic-foot / 12-liter aluminum tanks are the most commonly used in recreational diving. While divers in Hawaii might be fine on an AL80, divers in California would much prefer something made from steel. Tank sizes vary based on cylinder capacity, material type, and pressure rating. For example, the standard aluminum 80 cubic foot (cuft) tank will actually hold 77. It is intended to be a starting point for comparing different SCUBA tanks, their capacities, dimensions, weight, and buoyancy characteristics. Then you have a plethora of sizes from 6 cubic foot (cu ft) all the way to 120 cubic foot (cu ft). Oct 10, 2023 · Average air capacity of an aluminum tank An aluminum scuba tank, which is commonly used for recreational diving, has an average air capacity of about 80 cubic feet. 5, 12. Scuba tank sizes vary, with some measuring 9” x 2” across to 22” high x 8” in diameter. Mini tanks, which size to choose ? The choice of the size of the mini scuba tank is very important and depends on several factors, that's what we will try to discover in more details just after. Jan 9, 2023 · There are many different shapes and sizes when it comes to Scuba tanks and each one is specially designed for different divers. If you haven't made up your mind yet, then read this article to find out everything you need to know to get started on Key Features Dive confidently with this Catalina 53 cu ft aluminum tank, designed for optimal buoyancy. Our scuba diving tanks and cylinders are hand-picked by our highly qualified staff which includes Instructors and Divemasters who scuba dive locally in Canada and around the world. Equipped with the XS Scuba Pro Valve the 13 cu ft pony bottle is a choice. Tanks from north america have capacities that range from 6 to 40 cubic foot pony bottles (reserve cylinders) to 45 to 150+. It is also commonly used by technical divers as a bailout bottle. Features: Oxygened cleaned and ready for up to 100% Industry Standard CylinderThread Size: 0. Shop For More: Catalina cylinders , Full size scuba tanks , Mil , Scuba new arrivals , Scuba tanks , Sherwood scuba Ask us about this product Guaranteed Safe Checkout Share Lightweight Aluminum Tank: Only 2. SCUBA – L6X Aluminium [EU] Metric Imperial Products unavailable for North America, South America and Central America Feb 20, 2012 · About this item Sherwood Aluminum 100 CF Scuba Diving 3300 psi Dive Tank Pressure (psi): 3300 psi Weight: 46. 00 Scuba cylinders (tanks) come in a variety of sizes. These tanks are available in various sizes and materials, such as aluminum and steel, to suit divers' needs and preferences. This means it can hold around 2,265 liters of compressed air at a pressure of 3,000 pounds per square inch (psi). Material Options A scuba tank can cost anywhere from $150 to $400+ depending on the size and material of the scuba tank. Explore top-quality options for a safe and thrilling underwater adventure. 3 litre - so-called pony cylinders because of their small size. The cylinder is a 3000 psi (200 bars) service pressure tank measuring 24. These include: The right size cylinder for you is not readily available for rental. 2 lbs Length Including Valve: 30. Aluminum tanks, such as the AL80, are known for being lightweight and buoyant, making them a Dec 3, 2023 · What is a scuba tank? Scuba divers use scuba tanks or cylinders with compressed breathing gas underwater during their dives. . The Catalina 80 Cubic Foot Aluminum Tank with Pro Valve is commonly used for Cave Diving, Cold Water, Night Diving, Open Water, Recreation, Warm Water, Wreck Diving and more. Mar 26, 2024 · The size and working pressure of your Scuba tank can be determined by looking at the markings on the crown of your tank. Shop Now! Scuba cylinders (tanks) come in a variety of sizes. Aluminum 80 With Valve Tank includes Pro Valve, Current VIP Sticker and Current Hydro. Jun 18, 2024 · The scuba tank or diving cylinder is a central piece of equipment for every diver. Dive TanksDive Tanks Buying Guide « Back to Buying Guide Index Getting Your Own Tank Most scuba divers, especially new and intermediate divers, rent their tanks. One of the most commonly used rental and training cylinders at SCUBA dive shops are the aluminum (AL) 80 cubic foot tanks. May 12, 2025 · The XS Scuba / Highland Aluminum 6 tank is a top choice for drysuit divers, providing a consistent and easily accessible air source for maintaining buoyancy and thermal insulation. 3000 PSI Aluminum Tank: Reliable high-pressure rating. (6. Luxfer Aluminum Tank with Pro Valve Features Nitrox Ready Up to 23. Aluminum tanks are more common and less expensive, but more prone to denting and wear. 750-14 NPSM Won The aluminum 50 cu ft cylinder is popular with divers of the smallest stature such as short torso women or kids. Mar 1, 2024 · Commonly used scuba tanks come in different dimensions based on their capacity and material. A SCUBA tank is measured in cubic feet with a standard size of 80 cu ft. Choose from multiple sizes of Catalina scuba tanks to suit your specific diving needs and preferences. 1L Scuba Diving Tank,80 cu. com, we offer a variety of high-quality scuba tanks in different sizes and materials, ensuring you find the perfect option for your diving needs. Understand tank pressure, volume, & the Rule of Thirds for safety. Both materials have benefits and disadvantages. The High Pressure Thunderbird Aluminum Cylinders AL06 6 cu ft / AL08 8 cu ft / AL13 13 cu ft / AL19 19 cu ft / AL30 30 cu ft / AL40 40 cu ft / AL50 50 cu ft / AL63 63 cu ft / AL80 80 cu ft / ALN80 80 cu ft / AL100 100 cu ft A scuba tank, also called a scuba cylinder, is constructed out of either steel or aluminum. They come in many sizes from 5L to 15L, different materials like steel and aluminum and need to be sturdy enough to hold pressurized gas of up to 200 to 300 bar. Thunderbird Cylinders are the world's first aluminum scuba cylinders, developed in cooperation with Jacques Cousteau at their facility in Graham, North Carolina. The Thunderbird 50 cu ft Aluminum Cylinder is a great choice for your next scuba tank. Corrosion-Resistant: Ensures Long Tank Life Span. 4cuft of air at 3000 ponds per square inch (psi) at roughly room temperature. Our durable scuba diving valves provide reliable performance and compatibility with various tank models, ensuring safety and efficiency during your dives. Detailed specifications for our aluminum gas cylinders. Shop Catalina Aluminum Dive Tanks by Price, Ratings & Reviews, Discount, Color, Size & more. Feb 2, 2021 · The chart below contains SCUBA cylinder specifications in both the imperial and metric systems of measurement. More recently, many divers have been using a 200-Bar DIN valve that fits aluminum and low-pressure steel tanks. Just like aluminum 80's and 63's the efficiency, price and weight all lead the AL50 to be one of the next most popular cylinders divers choose. Your dive centre is still some distance away Aluminum 72 cubic foot SCUBA cylinder preferred for sidemount, stage and deco applications. Each SCUBA tank is designed to perform despite the unique underwater pressure. Dive tanks come in various materials, sizes, and designs, each with its own set of pros and cons. The cylinder weighs 14. Valuable information for deciding which SCUBA tank, cylinder, valve, and accessories to purchase. You cannot always tell from the size of the tank how much air it holds.