Resun check valve (CVC) 2/Pack

Resun check valve CVC 2/pack

• Resun check valve (also known as a non-return valve) for aquarium air pumps.
• Protects your air pump: It prevents water from siphoning back through the airline tubing into the pump, which can damage it.
• Direction matters: The valve has an arrow marked "IN" (from the pump) and "OUT" (towards the tank).
• Placement: It is best practice to place the check valve near the top of the aquarium rim, between the air pump and the air stone.

What's in the box
1 x Resun check valve CVC 2/pack