DC6V-12V DC Motor Air pump /Oxygen pump

Motor diameter: 30.2 MM Air pump head size: 32.3*32.3 MM Outlet OD: 3.9 MM (for 3*5 MM air pipe) Outlet port outer diameter: 3.9 MM (for 3*5 MM air pipe) Voltage : DC 6 V Current : 0.23 A Voltage : DC 12 V Current : 0.36 A Weight: 92 grams ???? Power-on test machine, this batch of air pump sounds soft, the air volume is large, the air pressure is much larger than the 370 air pump, and this time its intake air also has a little negative pressure. When DC12V, put the air inlet tube into the water, the air outlet also It can spray water, but after all, it is very inefficient, so it should be just a professional air pump, not a vacuum pump or a water pump.