Maxmoral 10Pcs Plastic One Way Air Pump Check Valves Non-Return Aquarium Fish Tank Air Pump Stop Valve Accessories(Black)

Specification: Housing: High transparent GPPS plastic Color:Black Great one way check valve for aquarium air pumpeffective protection for your pump Effectively prevent the water from flowing down the gas pipe when the oxygen pump is turned off thereby damaging the oxygen pump. Protect you air pump by preventing aquarium water from back siphoning during a power outage. Easy to install the check valve can be applied for common aquarium air pumps. Package included: 10pcs Aquarium air pump check valves