ITEM NAME:Valve Air Pump Stainless Steel Check Stainless For Aquarium CO2 System Y8B8 P0R4 Description&Preview.When used in the Ozone generator, it can prevent the Ozone from flowing back to the air pump and eroding the propeller. It can prevent the aquarium from water flowing back, which is caused by the decrease, and keep the function and service life of Carbon dioxide bottle.
