Mute oil free air pump or oil pump is good?
Yihan pump is not recommended to buy Yihan pump when bought back is mute but most people use about half a year there will be noise larger outgassing parts in small quantity will appear fault. Buy Yihan or do not consider it a pump.
If you want a quiet, buy IWATA, IWATA is super quiet, and the hose will increase the oil-water separation spring water effect, but will increase the chance of joint leakage, to buy it, I suggest you change a joint stronger
I think almost all bad places are generally leather ring and liner bearing and more, there is a one-way valve leakage and electromagnetic valve leakage, if you say there is oil and non oil which is absolutely durable oil is much more durable, about noise words are generally worn leather or liner bearing spring the leather ring and liner, broken, change, bearing broke out for total ramallah. Oil pump, even if the oil or water separation, or a dream, completely filtered out of oil and gas, for a long time will damage the equipment, equipment maintenance costs will increase, so I suggest using medical. Answer is not very comprehensive, please bear with me.
