Aquatop Aquarium Air Check Valve, 1 Per Card, HJS-3081BK

Description

Plastic check valves protect air pumps from aquarium water back-siphoning damage during power failures. To use, cut airline tubing between air pump and first outlet. Attach airline to each end of valve. Valve measures 2 inches long. Protect air pumps from aquarium water back-siphoning damage during power failures