1 1\2 " knife valve for asm G2 gate valve mod?

[hqgc]

I have been looking for a 1 1\4" gate valve for a g2 gate valve mod and have had no luck. I have tried every plumbling supplier, hot tub and home hardware place in Edmonton. I have also tried OA but they have none. I am a little hesitant to go through asm.com because I don't know what's up with the new octopus line transition.
So......... I found a 1 1\2" knife valve at AI in Edmonton. Question is= Do you guys think this would work with reducers on the G2? Would this affect the flow of the skimmer and therefore not work properly?