Check valve for Osmolator/Kalk Dispenser

[paulhines]

Roger,

Does the Osmolator/Kalk dispenser require a specific check valve? I've had to replace the original due it getting gunked up with kalk, and have unsuccessfully tried 3 different manufacturer's check valves.

The last one I tried was muanfactuered by Elite, and it looks just like the origainal. I can blow air thru it fine, but when hooked to the pump, the valve slams shut.

Is it possible the pump is bad? If not, how can I get a check valve that will work?

Thanks,

Paul

 

[smatter]

I have had better luck with the duck billed type. I am currently using a Tetra. The Elite spring type back-siphoned. Make sure you have it zip tied above the unit as illustrated in the instructions.

 

[rvitko]

Also be sure that the hose is not touching the tank and back siphoning. Are you sure it isn't in backwards? That is the only reason I can think of that the pump would shut it.

 

[paulhines]

I took it all apart, cleaned everything and used a new pump and check valve. Also, I plumbed it exactly like the picture, with the line between the pump and the kalk reactor looping up above the water line. Also, I set the transformer back to 9 volt.

Seems to working right now... without kalk in the container. I'm going to wait a day or two before I add that again.

Thanks for your help.

Paul