NA-200 Super stillegående .  SINGLE OUTLET AIR PUMP, WITH ADJUSTABLE KNOB Bør ha slange ventil i tillegg siden den justerere er litt for svak  . Features •    Modern compact design. •    Simple setup and operation, quick start. •    All models come with rubber feet, to avoid vibration. •    Very quiet motor operation and reliability. •    Full instructions and setup tips. •    Please remember to use a check valve or non return valve.