The ornamental design for a joint for fireextinguishingequipment, as shown and described.
FIG. 1 is a front elevational view of a joint for fire extinguishing equipment showing our new design; a rear elevational view thereof being a same image;
FIG. 2 is a right side elevational view thereof;
FIG. 3 is a left side elevational view thereof;
FIG. 4 is a top plan view thereof;
FIG. 5 is a bottom plan view thereof; and,
FIG. 6 is a perspective view showing the front, top and right side.
The broken lines in the drawings show unclaimed subject matter only and form no part of the claimed design.