winterizing hose too short

I bought a Camco winterizing kit with the by pass valve and an included clear tube to go into the coolant jug. However, the hose is about 12" too short. I need to extend this hose out, but the fitting that goes into the valve doesn't easily allow this. So, in the picture below, do you think I could cut the collar off and insert a new hose and simply tighten it on with a hose clamp? That collar can turn independently of the nut.

Thanks.


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