One Way Valve - where can I get.

Where can I find a 1" or 3/4" one way valve to attach to a ballast system I am buldiing. I have the center filled with salt water and the rest fresh, don't want the salt water to drain into the fresh.

thx

Not sure where you would find one at all, but anything that you find will significantly reduce the flow rate. If the check valve has a spring to ensure that the valve closes then it may require more pressure to open then the high volume pump could deliver. If it doesn't have a spring, then it is likely that the valve would not seal well and one tank could leak into the other.

Rod

I found mine at boaters world and it did not restrict any flow about 15.00 a piece that was the only bad thing