Where to buy a 1/4" check valve for RO water topoff?
 

Anyone know where to buy this in Vancouver or anywhere online?

I just bought one from aquariumpros.ca. It's a jg fitting, not cheap though with s/h around $27.

Todd I forgot, do you use a Tunze osmolator? I want to hook up the check valve to the output of my osmolator before it goes into a kalkreactor, will this valve (the one you bought from aquariumpros) fit onto the osmolator tubing?

Yes I use an Osmolator. The tubing on the Tunze is a bit larger than reg. 1/4" tubing. I did manage to fit the Tunze tubing into a JG fitting on my kalk reactor after working it abit, but then decided to just change the Tunze tubing from the pump to reg. 1/4"line, which makes taking the jg check valve off for cleaning very easy.