Milton (S-684-4) 1/4" MNPT Male Tank Valve
1/4" MNPT tank valves are designed for use in filling vessels with air. Standard valve core with plastic cap measures at 1 1/2" overall length. Maximum pressure of 200 PSI. Cap thread size of .305-32.
Other recommended tank valve size: Milton #S-684 (?” male NPT, 1” overall length w/cap) tank valve.