The Air Pump Adapter simplifies the pumping of your lamp by replacing the manual pump by the adapter. The pump stopper just must be unscrewed together with its piston and replaced by the air pump adapter. You can then connect a classic air pump or a compressor to the adapter and build up the pressure rapidly and comfortably. The use of an air pump adapter also extends the longevity of the mantle. Indeed, it will avoid tremors caused by a manual pumping. The air pump adapter suits to all Petromax models: HK150/250/350/500.