• NON RETURN AQUARIUM CHECK VALVE : Material: Plastic. Small and compact, Color; White with red
• CHECK VALVE FOR AERATION SETUP; This pump protectors protects your air pump by preventing aquarium water from back siphoning during a power outage.
• STURDY & QUITE ; Made of quality plastic, durable and sturdy, not easy to break, ensure long time of usage.
• FOR OXYGEN PUMPS ONLY : Great one-way check valve for most common aquarium air pumps. NOT suitable for CO2 or other high-pressure systems to avoid crack and leak.

Product Name: Aquarium check valve, Material: Plastic. Small and compact, which protect air pump by preventing aquarium water from back siphoning during a power outage. Made of quality plastic, durable and sturdy, not easy to break, ensure long time of usage. The check valves are for common aquarium air pumps.Package included: 10 pcs check valve. Note: Please DO NOT use them with CO2 system. Great one way check valve for aquarium and fish tank.