Thanks for the info. I was able to find 2 out of the 3 items that I need at the above sites, however I can't find the Union Nut. My filter for some reason only has threads on the outside for a hose to connect. The threaded union goes on first and then the Union Nut goes on top of that and screws onto the pump to secure it in place. Just frustrating. Wish I had a more popular brand name filter/pump.