Filling a SCBA tank

 the Air Venturi HP Valve has a DIN 300, Jubilee Charging Valve that incorporates a patented device restricting the flow rate into the airgun. The air flow restrictor reduces the chance of overheating from filling too quickly. The valve also has an improved pressure release screw and a comfortable, rubberized hand wheel. This unit is rated for pressures up to 4500psi (300bar).



This was copied from the Air Venturi Jubilee description.

Note the change to a DIN300 thread and the working pressure UP TO 4500.