The shut-off valve is made of high quality plastic. It can be used as a protective device for the aquarium oxygen pump to prevent suction in the event of a power failure or malfunction. The water flows back to the oxygenator, causing the It is easy to install and suitable for aquariums, homes, schools, etc. Use of aquariums in the premises. Product Information: Material: Plastic Colour: Red Size: Length: 5.5 cm Hole diameter inlet and outlet: 4mm Weight: 4g Note: Please do not use with CO2 systems. Packing specification: Check valve*15 If you have any questions, please contact us, we will be happy to provide you with a satisfactory solution .
