Zerodis 10PCs One Way Check Valve, Fish Tank Water Stop Valve Air Pump Check Valve Aquarium Variable Diameter Unidirectional Hose Anti Ozone Supplies Accessory - Zerodisd9qfo87uxb

• 【High Quality Material】Our water stop valve is made of high quality PP material, durable and long service life. Aquarium Air Pump Check. 【Protecting Valve】When the oxygen filling pump stops working suddenly, due to the internal and external pressure difference, the water flow will flow backward and damage the oxygen filling pump. Our water stop valve can prevent this situation. aquarium air pump accessories and target audience keywords:fish. 【Easy to Operate】When you using air pump and our check valve could be used to prevent water from entering the machine pump, this anti-ozone valve is very easy to handle..aquarium air pump accessories and target audience keywords fish 【Mainly Usage】When the position of air or water at the other end of the pump is higher than that in front of the pump, our water stop valve can prevent backflow of water 【Avoid Backflow】When the air pump is cut off and stopped, there is no danger of water backflow. It is a small protective cover for air pumps.christmas gift ideas for boyfriend