Express Logo

Dive Gear with Full Warranties & Fast Free Shipping
  Site Search
Contact Us
Home BCs Computers Essentials Exposure Gas / Tanks Hardware Lights Logowear / Media Rebreathers Regulators Tools
 

X-Series Steel SCUBA Tanks
by Worthington Cylinders

On This Page: Steel Cylinders | Features|
Variable Capacity of Cylinders | Deluxe Complete Setup | Pricing 		 
Steel Cylinder - Nitrox Ready Dive Rite Express is proud to offer Worthington X-Series SCUBA Cylinders. Worthington is the world's leading global supplier of pressure cylinders, continually delivering solutions that exceed customer expectations in quality, service and value.

About Worthington: Headquartered in Columbus, Ohio the company supplies cylinders to more than 70 countries worldwide. Worthington Cylinders is a subsidiary of Worthington Industries, with annual sales of approximately $3 billion Founded in 1955, the company operates under a long-standing corporate philosophy rooted in the golden rule, with earning money for its shareholders as the first corporate goal. This philosophy, an unwavering commitment to the customer, and one of the strongest employee/employer relationships in American industry serves as the company's foundation.
Descriptions are ©Copyright by Dive Rite Express
How Steel Cylinders Are Made Video

How Steel Cylinders Are Made

Watch this five minute video that show's the Worthington factory tools, systems and processes involved in making steel SCUBA cylinders.

Click on the image at left to pop-up a new window containing the video. A high speed internet connection recommended for best viewing.

Video is © Copyright

Worthington Cylinders at Dive Rite Express

Cylinder Service
Pressure
(psi)		 Diameter
(inches)		 Height
(inches)		 Weight
Empty
(pounds)		 Buoyancy
Full : Empty
(pounds)
X7 Steel 65 3442 7.25 16.7 25.1 - 8.7 : - 3.9
X7 Steel 80 3442 7.25 19.7 28 - 9.0 : - 3.0
X7 Steel 100 3442 7.25 24.0 33 - 10.0 : - 2.5
X7 Steel 120 3442 7.25 28.0 38 - 11.0 : - 2.0
X8 Steel 119 3442 8.00 24.0 42 - 10.9 : - 2.0
X8 Steel 130 3442 8.00 25.5 43 - 11.7 : - 2.0
Comparison Only - Aluminum 80 3000 7.25 26.10 31.4 - 1.4 : + 4.4
Buoyancy specification for cylinder and valve in seawater.

Features of All Worthington X-Series Cylinders

  • Hot-dip galvanized external finish
  • Five-year limited warranty
  • Both U.S. DOT-E14157 and Canadian TC-SU4957 markings
  • 0.750-14 NPS (3/4 NPS) threaded neck opening
  • Manufactured in North America
These cylinders are made at Worthington's state of the art manufacturing facility in Tilbury, Canada. Worthington manufactures these cylinders using deep-drawn chrome molybdenum steel resulting in a light weight cylinder with excellent buoyancy characteristics.

These Products Are Nitrox-Ready Dive Rite Express offers diving products labeled "Nitrox Ready", whose oxygen-compatible components are free of hydrocarbons and other contaminants. With Dive Rite Express , you don't have to make expensive aftermarket alterations to use oxygen-rich gas mixtures.

Click Here to read "What Does Nitrox-Ready Mean?"

Tek Tip
Tek Tip Symbol
How to Select a SCUBA Tank
Our factual but easy-to-read article helps you make this big decision by giving you information on:
  • Aluminum tanks versus steel tanks
  • Low-pressure tanks versus high-pressure tanks
  • Tank paints, coatings, and finishes
  • Tank dimensions and capacity recommendations
Click Here to read the whole article on "How to Select a SCUBA Tank."

Variable Capacity of Cylinders

One idea we like is selecting a larger capacity cylinder and then deliberately under fill. For example the X7-100 yields 89 cubic feet at 3000 psi, and the X8-119 yields 107 cubic feet at 3000 psi. That is plenty of gas for most dives, puts an end to short fills, and the lower pressure is easy on equipment, yet allows the option of a high-pressure fill when you need really need more gas. This is how divers have for years been using overfilling with low-pressure cylinders, but with the advent of the large-capacity high-pressure cylinders, it eliminates the concerns regarding overfills.

Cylinder 2640 psi 3000 psi 3442 psi
X7 Steel 80 64 cu. ft. 72 cu. ft. 80 cu. ft.
X7 Steel 100 80 cu. ft. 89 cu. ft. 100 cu. ft.
X7 Steel 120 96 cu. ft. 107 cu. ft. 120 cu. ft.
X8 Steel 119 95 cu. ft. 107 cu. ft. 119 cu. ft.
X8 Steel 130 104 cu. ft. 117 cu. ft. 130 cu. ft.

Tek Tip
Tek Tip Symbol
What Happened to Low-Pressure Cylinders?
Many experienced divers have preferred low-pressure cylinders because they are easier on regulators, have no short-fill concerns, and are more suitable for partial-pressure blending. More recently, the low-pressure 3AA cylinders (2640 psi, i.e., 2400 with a +) are being replaced by the new DOT exemption cylinders (3442 psi, no plus needed). That's because you can use the high-pressure 3442 psi cylinders as low-pressure 2650 psi cylinders if you prefer, simply by under filling. The 3442 psi DOT Exemption cylinders have the same length, diameter, and capacity at lower 2640 psi pressure as the 3AA cylinders. Even better, the empty weight of the new cylinder design has been reduced slightly, yet the buoyancy remains slightly negative when empty.

[ Click for Prices ]

The Dive Rite Express "Deluxe Complete" setup includes:
  CheckCylinder
CheckPro DIN/K valve
CheckSpare Viton O-ring for valve face CheckValve protector cap
CheckSelf Draining Anti-Roll Boot
CheckFull visual inspection
 Standard Pro DIN/K Valve  
Dive Rite Express ships your cylinder with the valve installed. Unless you order another valve or manifold, the valve is the Thermo Pro DIN/K valve suitable for use with both DIN or Yoke regulator fittings. Your cylinder ships with a few PSI pressure of oxygen compatible air necessary to keep the interior dry. The cylinders have a current month Visual Inspection Sticker; no re-inspection is necessary before filling. SCUBA Tanks must be hydrostatically tested every five years (60 months). The primary steel cylinders typically have a factory hydro date between 3 and 9 months old, but not more than 12 months old.

Tek Tip
Tek Tip Symbol
What is the difference between DIN "200 Bar" and DIN "300 Bar" valves?
The Deutsches Institut Für Normung (DIN) is a German standards setting organization similar to our American National Standards Institute (ANSI) and Compressed Gas Association (CGA). DIN 477 is a specification that recommends cylinder valve outlet and connector designs for specific types of gases and pressures based upon safety considerations. These various designs have deliberate incompatibilities to preclude the possibility of errors when handling different types of compressed gases at differing working pressures. The two valve outlets and connectors of interest for divers are the DIN 477 No. 13 and the DIN 477 No. 56 (formerly No. 50), both designated for use with compressed air. The DIN 477 valve and regulator fittings are most widely used outside the U.S. The regulator first stage DIN connector is a male screw type, and instead of clamping on to the outside of the valve as does the yoke, it screws directly into the female DIN outlet of the valve. The sealing O-ring is held in the end of the regulator connector rather than in the face of the outlet. The DIN 477 system, with it's captured o-ring design, has proven to be very reliable for use with SCUBA.

Outlet/Connector #13 is from DIN 477 part 1 - for cylinders with test pressure ratings up to 300 bar and is commonly referred to in the SCUBA industry by the slang term "200 bar", probably because most cylinders with 300 bar test pressures have working pressures in the 200 bar range. Outlet/Connector #56 is from DIN 477 part 5 - for cylinders with test pressure ratings up to 450 bar and is commonly referred to in the SCUBA industry by the slang term "300 bar". The two designs are nearly identical, but the #56 valve outlet is deliberately deeper so the shorter #13 connector will not be long enough to seat properly. This is a safety feature to prevent connecting a low pressure device to a high pressure supply. It's important to understand that the "200 bar" or "300 bar" descriptions are just slang terms that have nothing to do with the pressure ratings of the outlets and connectors themselves!

Click Here to read our FAQ about 300 bar vs 200 bar DIN valves.

Please note: Cylinders qualify for FREE DOMESTIC SHIPPING only.

Pricing for Steel SCUBA Cylinders (Tanks)

 
Image Item   Description Ship Price
  W o r t h i n g t o n   I n d u s t r i e s  
    Price includes: Nitrox-Ready Cylinder and Pro DIN/K valve, Boot, Valve protector cap, Spare Viton O-ring for valve face, Full visual inspection  
    Cylinders may ship from a different location than the balance of your order and may not arrive in a single delivery  
X7-80 X7-80   X7 Steel 80, 3442 PSI, galvanized finish 1-2 Days $285.00
X7-100 X7-100   X7 Steel 100, 3442 PSI, galvanized finish 1-2 Days $345.00
X7-120 X7-120   X7 Steel 120, 3442 PSI, galvanized finish 1-2 Days $380.00
X8-119 X8-119   X8 Steel 119, 3442 PSI, galvanized finish 1-2 Days $380.00
X8-130 X8-130   X8 Steel 130, 3442 PSI, galvanized finish 1-2 Days $400.00
    Click here for Doubles packages  
  C y l i n d e r   O p t i o n s  
FX6520 FX6520   Nitrox Tank Wrap Decal, 24-Inch x 6-Inch   $5.00
FX5262SUB FX5262SUB   Substitute DIN Only 300-BAR Valve for Pro DIN/K valve   $22.50
No surprise costs.     No Tax and shipping is FREE for US orders over $35.

Having trouble finding something?
   
Site Search Type one or two words into the text box above.
 Then click the Search button to search our site. 		Still having trouble?
Send an e-mail, or call her
(Toll-Free) at 866-498-6857
Mon-Fri, 9:00 am - 5:00 pm Eastern
She'll see what we can do for you.
This web site is operated by Fill Express, LLC an independent authorized dealer for the products we sell.
We are not a factory outlet; we sell only new, first quality, genuine brand name merchandise with full manufacturer's warranty.
Home  |   About Us  |   Contact Us  |   Training Center  |   Library  |   Policies
E-mail A Link To This Page To A Friend (or Yourself)
© Copyright 2008   |   Terms & Conditions   |   Privacy Statement 		BBBOnLine Reliability Seal