The cap on the top of my air bleed tube assembly is hanging together by electrical tape right now. I tried to point to it here in this diagram (unfortunately don't have a real pic).
Image 2016-07-13 at 10.17.03 AM.jpg
It's a 3-4" cap that fits on the top of the PVC pipe. As I noted mine is cracked busted and hanging together by a thread.
Where can I get just a replacement for this? I see some items for sale. But there's not much detail on if it includes the little cap. Also, I'd rather not spend $30 for a 3" piece of tubing.
Separately, how important is it to have this sealed and in good working order? Is it affecting my flow much?