L-ball Union Drain Valve

FIG. 1 is a front elevational view of an L-ball union drain valve; FIG. 2 is a back elevational view of the L-ball union drain valve; FIG. 3 is a side elevational view of the L-ball union drain valve; FIG. 4 is a side elevational view of the L-ball union drain valve; FIG. 5 is a top elevational view of the L-ball union drain valve; and, FIG. 6 is a bottom elevational view of the L-ball union drain valve. The broken lines showing of various features, including the handles, handle nut, valve stem, cap, and lanyard, are for the purpose of illustrating unclaimed portions of the L-ball union drain valve and forms no part of the claimed design.