Last updated on January 30, 2021
The parts used for this were as follows, all purchased from either a local hardware store or at Performance Line Tool Center:
First, the blower tube and rubber head were removed from the handle/valve. The compression to NTP adapter was then fitted into the body, as the compression threaded side of the adapter was the closest reasonable fit that could be found. The air chuck was then fitted to the NPT thread on the other end of the adapter. The compression nut and ring are not needed.
Next the air chuck is opened by unscrewing the brass ring around its opening and the check valve from inside was removed. Removing this allows the assembly to expel air whenever the lever is depressed. The center of a 1/4″ rubber washer is then slightly enlarged using a stepped drill bit so that it fit tightly over the body of a Presta valve. This modified washer is put in the chuck in place of the original, and the chuck is now usable for coreless Presta or Schrader valves.
Finally a quick disconnect that fit my air hose was installed and the tool was ready to use.
With this I had no problems airing up a newer (but still old tread pattern) Schwalbe Racing Ralph and a somewhat used Kenda Small Block Eight on my newish Blunt SL-based wheels. I’m still working on finishing up the tubeless setup, but this tool really helped get it done easily.
Were I to build another one of these valves I’d probably do it with a Milton 151 instead, as it’s a simple lever valve body with 1/4″ NPT fittings on each end. It’d then be easier (and cheaper) to set up the chuck, as a simple 1/4″ NPT to 1/4″ NPT nipple of whatever length desired could be used. This part wasn’t available (or known) to me at the time, so I made do with what I could find. Total cost was less than $20, and it should last for as long as I need it.