Swing check valves

[JEREMY78247]

does anyone know where I can get some Swing check valves? I've tried local hardware stores and they don't have them. I need a pair of 1".

[RobertG]

I got mine from Aquatic Eco Systems. Make sure there is no metal parts in the ones you get. HD has some but they wont work.

The ones I got are clear & work great.