Quantity Two identical valves is the lot. Pics show qty one valve.

FORD METER BOX SINGLE CHECK VALVE HA31-323-NL METER SWIVEL NUT X FEMALE IRON PIPE THREAD OUTLET.

NL = No Lead

Valve size : 3/4”.

Meter (swivel) size inlet: 5/8”x3/4” and 3/4” meters

Outlet size: 3/4” FNPT FIPT

Never installed surplus. Questions welcome thanks.