10pcs Oxygen Pump Air Pipe Check Valves Aquarium Check for Valve One Way Non Return for Valve for Aquarium Air Pump 3 Co

The check for valve is suitable for common aquarium air pumps. Please do not use them with CO2 systems. One-way check for valve for aquariums and fish tanks. Protect your air pump by preventing the aquarium water from anti-siphoning during power outages. Made of durable transparent plastic. When the socket inside is stuck, please use a paper clip to poke from the input end to the output end. 10pcs Oxygen Pump Air Pipe Check Valves Aquarium Check for Valve One Way Non Return for Valve for Aquarium Air Pump 3 Co. Features: brand new and high quality. The check for valve is suitable for common aquarium air pumps. Please do not use them with CO2 systems. One-way check for valve for aquariums and fish tanks. Protect your air pump by preventing the aquarium water from anti-siphoning during power outages. Made of durable transparent plastic. When the socket inside is stuck, please use a paper clip to poke from the input end to the output end. Stomatal diameter: 0.15 4mm, total size: 2.16 x 0.