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X-Series Steel SCUBA Tanks by Worthington Cylinders

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Production Status of Worthington Steel Scuba Cylinders

In January 2014, Worthington ceased production of steel scuba cylinders, meaning there is no longer any manufacturer of hot-dip galvanized steel scuba cylinders qualified to DOT & TC specifications for the North American market. According to Worthington their Tilbury plant, which primarily produced steel cylinders for the natural gas market, could no longer operate cost effectively in the face of competition from China. Dive Gear Express now offers the Faber HP-Series for those divers seeking galvanized steel scuba cylinders.

X-Series Steel Cylinders by Worthington
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X-Series Steel Cylinders by Worthington URL for this product

Prices include FREE continental 48 U.S. shipping!

Pro DIN/K Valve Worthington X-Series SCUBA Cylinders are manufactured using deep-drawn chrome molybdenum steel resulting in a light weight cylinder with excellent buoyancy characteristics. Dive Gear Express ships your Nitrox Ready cylinder with the valve installed (domestic ground US only). Unless you select no valve, the valve included in our price is a very high quality Thermo Pro DIN/K valve suitable for use with both DIN or Yoke regulator fittings. The cylinders ordered with valves have a current month Nitrox Ready decal.

SCUBA Tanks must be hydrostatically tested every five years (60 months). The larger primary steel cylinders typically have a factory hydro date between 3 and 12 months old, but not more than 18 months old. X7-80's and X7-65's may have a factory hydro date up to 24 months old as these are manufactured less frequently.

Features of All Steel SCUBA Tanks
from Dive Gear Express

  • Factory cleaned for oxygen service
  • Hot-dip galvanized external finish
  • Both U.S. DOT-SP14157 and Canadian TC-SU4957 markings
  • 0.750-14 NPSM (3/4 NPS) threaded neck opening
  • Supplied valves are Nitrox Ready

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 How to Select a SCUBA Tank.

Worthington Cylinders at Dive Gear Express

Cylinder Service
Full : Empty
X7 Steel 65 3442 7.25 16.7 25.1 - 8.7 : - 3.9
X7 Steel 80 3442 7.25 19.8 29.9 - 9.0 : - 3.0
X7 Steel 100 3442 7.25 22.7 33.1 - 10.0 : - 2.5
X7 Steel 120 3442 7.25 27.7 39.7 - 11.0 : - 2.0
X8 Steel 119 3442 8.00 23.9 42.5 - 10.9 : - 2.0
X8 Steel 130 3442 8.00 25.3 44.7 - 11.7 : - 2.0
Comparison Only - Aluminum 80 3000 7.25 26.1 31.9 - 1.8 : + 3.2
Buoyancy specification for cylinder and valve in seawater.
Height dimension is cylinder only, i.e. less valve.
Specifications supplied by XS Scuba and accurate as of Fall 2013.

The Dive Gear Express "Deluxe Complete" Setup Includes:

  • Nitrox Ready Cylinder w/Boot
  • Nitrox Ready Thermo Pro DIN/K Valve
  • Spare O-ring for Valve Face
  • Valve Protector Cap
  • Current Nitrox Ready Decal

According to our suppliers, their Nitrox Ready and Oxygen Service products are compatible with oxygen and factory cleaned for use with compressed gases in excess of 23.5% oxygen. Nonetheless, the 'clean state' of this equipment applies only prior to initial use. Thereafter, periodic inspection and cleaning are a necessity. You must meticulously follow the recommendations of the US Department of Transportation (DOT), Compressed Gas Association (CGA), and other federal/state/local agencies, plus your dive training agency for equipment maintenance, handling, storage, labeling, filling, transport and use of compressed gases. Oxygen-related fires and explosions can result in serious injury or death. Ultimately, you must make the final decision to assume all risks associated with the use of any compressed gases, including those in excess of 23.5% oxygen.

Related Products

Aluminum SCUBA Tanks Cylinder Valves by Thermo Vindicator Handwheels for Scuba Valves
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Cylinder prices do include FREE continental 48 U.S. domestic shipping.

Cylinder prices do NOT include international shipping, or shipping to Alaska, Hawaii, APO/FPO, APO/FPO, or U.S. Territories. Our cylinders and valves are Imperial 3/4 NPS neck threads, NOT Metric M25 neck threads, and the valves have overpressure relief devices. The cylinders have US DOT and Canadian CTC markings suitable for use only in North America. Our cylinders and valves are NOT CE approved and NOT suitable for use in the European Union.

Image Item SKU Description Ship Status US $ Price
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  Cylinder Options  
Boot, Replacement for Worthington X7 Steel Tanks  SPM-TBX7S Boot, Replacement for Worthington X7 Steel Tanks In Stock  $16.00
Boot, Replacement for Worthington X8 Steel Tanks  SPM-TBX8S Boot, Replacement for Worthington X8 Steel Tanks In Stock  $16.00

All Dive Gear Express financial transactions are in United States Dollars (US $).
Prices in currencies other than US $ are approximations and should be used as a guide only.
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