Please note there may be a discrepancy on the cylinder being requested as it may not the correct cylinder for the BOP requirements. The one being requested 200130-01 is a SnapChange valve cylinder. The BOP uses CGA valves on their cylinders. This is information was provided via 3M/Scott Safety Federal Representative who originally worked with David Asher at BOP. The correct cylinders should be p/n 804723-01 which is still 4500PSI 60 Minutes Carbon Cylinder, just the valve is a CGA style valve. Price is the same but would verify the style cylinder prior to ordering.