where can i get metric check valves?

[cathyg_99]

Originally Posted by Wayne

So in the event of a power outage your sump will overflow? Most of the time you calculate the baffle height to compensate for display water into the sump...

lets put it this way its a prebuilt setup from aquagiant it was cheap... i phoned to tell them their sump wasnt big enough for the overflow they cut, and i was told by them that my return pump was to powerful