roy do you have the napa part number for the fill valve, my local napa can't seem to find it
Yep, it's <font color=red>PN 90-234 FLUID ADAPTER FOR AIR-LIQUID VALVES cost was $18.00</font color=red> as shown in the picture attached. You'll need a valve core tool (to remove and re-install the valve core (the core is threaded, it screws in and out)) before and after you pump in the liquid). Re-install the valve core, then inflate the tire with air.
I didn't buy the valve core tool...didn't realize I would need it..but they're only a couple bucks. There is one that captures the valve core when it comes off the threads. Some don't, but the core can fly (from the air pressure you're releasing from the tire, so I suggest you buy the tool that does capture the core. May as well pick up a few spare cores while you're at NAPA.
There is another one, <font color=blue>PN 90-235</font color=blue>, that has the valve core removal tool built in. I don't know the price of that one.
Now, I'd e-mailed Bird about removal of the Valve Core and some clarification of this task. I'd like to thank Bird and MarkV for their valued experience and guidance.
Text of Bird's e-mail reply:
Yep, Roy, you do need to remove the valve core. I use a tool that is just
for removing and replacing valve cores, and for pulling tubeless valve stems
into a wheel, but there are also some valve caps that have the little slot
on top that can be used for the same purpose. And, yes, when you get the
proper amount of liquid in, then put the valve core back and air it up to
the desired pressure. I didn't even know they made an air/liquid valve with
a built-in core remover. Personally, I wouldn't have any need for it. You
can buy the tool to remove valve cores pretty cheaply lots of places. And
of course, you add some water, turn it off, use that button to bleed off the
air pressure, add more water, etc. It takes a little time, but not too much
and not much real work to it.
Good luck with it.
Bird