EasyPro Pro-Series Check Valve Assemblies Model:CVA30EP2 5" *Recommended aquarium sizes are

5" *Recommended aquarium sizes are approximate

there is no chance of damaging the unit when lifting pumps in or out of skimmer

by simply moving the handle on the multi-port valve into the corresponding positions to perform a backwash and rinse of the K+ media

TH400 PS6E 4lb SCVA2047V* 2" EP4700N

EasyPro Pro-Series Check Valve Assemblies Model:CVA30EP2 5" *Recommended aquarium sizes arePro Series Check Valve Assemblies are used inside Pro Series skimmers to bring the flow of water from the pump up to the outlet hole in the back wall of the skimmer. Check valve assemblies connect the pump to the plumbing and keep plumbing line full of water even when the pump is off. Pre assembled check valves are sized to properly fit a pump and equipment combination to desired pipe size. Model Size Compatible Pumps Fits Inside Wt CVA12EP 1. 25"