10pcs Check valve of fish tank gas pump 4mm water stop valve prevent backflow

Description

Product Name: check valve (connected to 4mm pipe)
Product Description: it is produced with high-quality raw materials and has good durability. When the air pump is placed lower than the water surface, prevent water backflow from damaging the front-end air pump or other products and equipment. After adding the check valve, the air pump can be placed higher or lower than the water surface, and there will be no risk of water backflow when the air pump is powered off and stops working. Is the little guard of gas supply facilities.
Function Description: it is used as the check valve of the oxygen charging pump to prevent the reverse flow of water caused by the internal and external pressure difference when suddenly stopping working, damaging the oxygen charging pump and causing the overflow of water in the cylinder to form property loss. Prevent the water in the fish tank from flowing into the air pump and burn the air pump, which can avoid danger. It is a necessary accessory of the air pump.
Quantity: 10pcs