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Brass Eagle


Brass Eagle CO2 Refillable Cylinders Meet or Exceed ASTM Safety Standards

CO2 cylinder safety is an important subject in the paintball industry.  Having standards and regulations on CO2 cylinders is absolutely necessary for safety.  The American Society of Testing and Measures (ASTM) has established safety standards for CO2 cylinders.   ASTM is one of the largest voluntary standards development organizations in the world. ASTM is a not-for-profit group that provides a forum for the development and publication of voluntary consensus standards for materials, products, systems, and services. More than 20,000 members representing producers, users, ultimate consumers and representatives of government and academia develop documents that serve as a basis for manufacturing, procurement, and regulatory activities.

All Brass Eagle Inc. CO2 refillable cylinders meet or exceed ASTM standards.  Brass Eagle Inc. is virtually the only paintball manufacturer today with CO2 cylinders that meet or exceed all of ASTM standards for one-piece burst disks.  

ASTM standards specify, “The rupture disk and seal shall be permanently retained on the plug to provide proper alignment and assembly”.  Not all CO2 cylinders on the market today contain a unified burst disk.  Various cylinders in the industry contain three separate pieces: a plug, a rupture disk and a retaining ring.  This style of burst disk allows a user the ability to tamper with the rupture disk or to replace the rupture disk with an undisclosed amount on foreign material.  It is also possible for a user to purposely or accidentally replace a ruptured disk with two or more replacement burst disks.  Either situation will result in a serious safety hazard to the user and to others in the vicinity.     

ASTM standards state, “The burst disk assembly shall be marked with its nominal burst pressure”.  There are cylinders on the market that do not meet this requirement. Brass Eagle Inc. cylinders have “3K” clearly marked on the plug.  The “3K” means the burst pressure of the rupture disk is 3000 psi.   Without this marking, users are uninformed about the nominal burst pressure of their cylinders. ‘

Retailers should stock and sell only CO2 cylinders that meet ASTM standards for safety.

For more information on Brass Eagle Inc. CO2 cylinders and complete line of paintball products, please visit us at, and 

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