5Pcs Oxygen Pump Special Trachea Stop Valve Check Valve Aquarium Accessories

Characteristic: High quality 100% brand new! To prevent water backflow to damage the front end of the pump or other products and equipment. Each outlet needs to connect a stop valve, two-headed pump needs two stop valves, and so on.

Material: plastic Color:Blue,Red,Black Overall length: 36mm , the diameter of the middle circle: 8mm Two ends: inner diameter: 3mm, outer diameter: 4mm Suitable for common air pipe(innner diameter approx. 4mm) Package includes: 5 *Non-Return Check Valve

Note: The OUT surface is air outlset, and the other side is air inlet.

Precautions for purchases: 1.Due to manual measurement,there may be some errors,please forgive me,thank you! 2.Due to the difference of the monitor, the color of the thing itself may not be displayed, thank you! The merchant warrants that their products comply with all applicable laws, and are offered only if they comply with Joom's policies and EU Product Safety and Compliance laws.