where can i get metric check valves?

[Wayne]

Originally Posted by cathyg_99

i need a metric check valve for my pump output so in the event of a power outage i wont have water on my floor. its 1mm smaller from being 1" does anyone know where i can find one??? ANYWHERE???

ive tried amre supply, plumbers village, home depot, rona ect

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...