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 5905-00-889-5538
NSN 5935-00-555-2633
NSN 5975-01-342-2292
NSN 6145-00-450-1947
NSN 5990-00-267-9956
NSN 6610-00-070-0325
NSN 5855-00-149-0766
NSN 5925-00-081-9135
NSN 5925-01-486-9990
NSN 5945-00-937-3261
NSN 5945-01-185-1994
NSN 6685-00-997-2719