aquaLife Ultra Check Valve 2pk CO2 & Air AL362

$21.61 $41.49
Fits 4mm – 3/16″ ID airline and CO2 size tubing These Check valves work very well and have slightly higher opening pressure than the Pro check valve or other check valves. They can be used with CO2 and larger air pumps.
Air Check Valves

Air Check Valves