Valve
FIG. 1 is a side view in elevation; 
     FIG. 2 is bottom, plan view; 
     FIG. 3 is an end view in elevation; 
     FIG. 4 is a top, plan view; 
     FIG. 5 is an end view of the side opposite to that shown in FIG. 1; and, 
     FIG. 6 is a side view of the end opposite to that shown in FIG. 3.