Prevents water from siphoning out
Protects air pump from back-siphoning damage
Prevents flooding during power failures
Accurate, leak-proof security
The Elite Check Valve will help prevent water from siphoning out of the aquarium through the air hose and into the air pump. Whether in the event of a power failure, or when removing filters and other air-driven accessories from the aquarium, the Elite Check Valve ensures that your water levels remain steady.
Marina Plastic Check Valve - B0002AQIAO