Is there a one way valve? I'm just scared of having blackouts or my pump failing on me or something. I need something to attach to my return, just incase my pump fails, so the water wont backflow to the sump and having a mess again. I flooded the ground floor and he basement 3x already. And my landlady's pretty mad about it. She said, nxt time that'll happen, she'll get rid of my tank 
works for me, too. much cheaper ($0.00)