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Is a spool needed; and, if so, why?
Wouldn't the transmitter just screw into the female end of the high pressure hose?
That may be a stupid question...feel free to educate me on the need for, or benefit of, a spool in this application.
Thank you. I guess I assumed that it would have an o ring.If you are putting the transmitter on the end of a hose you need the spool for it to seal properly or you will have a major air leak.