This is my take on this topic, so take it for what its worth.
1. I would never valve a drain.
2. I would never use a check valve.
3. Make the drains large enough to handle any volume or two drains or use an overflow drain as many have suggested.
4. Use a herbie, duraso or stockman overflow, to silence them.
Sumps & overflows are a very simple thing to not complicate and make them fool proof.