This specification covers cylinder burst disk assemblies for paintball marker propellant sources their application and installation requirements. The materials and processes used to manufacture the burst disk assembly shall result in items with mechanical strength sufficient to pass the applicable burst pressure tests. Materials used shall be corrosion resistant, chemically compatible with the propellant used, and shall not promote galvanic action. The burst disk assembly and related port features shall be free of burrs and sharp edges. Burst disk assemblies intended for use with the specified service pressure shall meet the prescribed rupture pressure and temperature conditions. The relief hole in the burst disk assembly shall provide for flow to adequately vent the cylinder as specified. The rupture disk and seal shall be permanently retained on the plug to provide proper alignment and assembly. The burst disk assembly and port shall conform to the physical envelope as described in the illustrations given. The burst disk shall be marked with manufacturer code and rated burst pressure. Prior to installation the mating port and the burst disk assembly shall be inspected to confirm compliance with physical envelope requirements, cleanliness, and general suitability for use.