AQUANEAT Aquarium Check Valve One Way Non Return Valve for Aquarium Air Pump,10pcs Red
- Specially designed non-return valves will protect your air pump by preventing aquarium water from back siphoning during a power outage.
- They are made of plastic material for long time use.
- Place these air pump check valves in your airline tubing between your air pump and aquarium water to prevent water returning down the air line.
- Fits standard aquarium airline tubing with inner diameter about 4mm.