The valve is inserted through the backside of the wheel and clamped from the front with a nut and washer
A metal, or metal and rubber, tubular stem containing a valve core and cap. The mounting end may have a base with a fitting designed for mounting on a pneumatic tire, inner tube, or tire rim, to permit and retain inflation or permit deflation. The mounting end may be internally threaded for adaptability to a valve spud or may be provided with cure-on or clamp in features. The other end is externally threaded to accommodate a valve cap, and internally threaded to accommodate the valve core.
Dept. of the Army 
Dept. of the Air Force 
U.s. Marine Corps 
Dept. of the Navy 
U.s. Postal Service - Procurement and Supplies Dept. Classification: Other taps, cocks, valves, etc., nesoi
NSN 5975-00-244-0706
NSN 6610-00-469-3459
NSN 5996-00-525-1777
NSN 7035-01-143-3573
NSN 5855-01-273-1971
NSN 6685-00-952-9259
NSN 5925-01-157-9795
NSN 6150-00-518-2125
NSN 6105-01-577-0014
NSN 5910-00-101-8273
NSN 5935-00-484-9471
NSN 6610-01-558-6378