20pcs Aquarium Air Pump Check Valve, 4mm Hose One Way Valve for Aquarium Air Pump CO2 Supply System

Description

【Quality Material】This air pump check valve is made of premium plastic, durable and sturdy, can effectively prevent water from entering the air pump.

【Direction control】It can prevent the aquarium from backflowing water, which is caused by the decrease, and keep the function and life of the carbon dioxide bottle.

【Prevent Backflow】When used in the ozone generator, it can prevent ozone from flowing back to the air pump and eroding the air pump. 39;propeller. 【Other application】Export pump with check valve, it turns off immediately to avoid the risk of water backflow when the air pump power off and stop working. 【Air Pump Accessory】Suitable for 4mm diameter tubing and can be used with aquarium oxygen pumps. Specification: Condition: 100% Brand New Item Type: Check Valve Material: Plastic Product Color: Blue Suitable For: Inlet Pressure Gauge Tube/ 4mm/0.2in outlet Function: Used as an oxygenation pump due to the pressure difference between inside and outside when work stops