What is a typical installation placement for pendant sprinkler heads?

• A. Sidewall heads mount on walls near the ceiling.
• B. Upright heads install on top of vertical runs.
• C. All spray patterns are identical for all orientations.
• D. Pendant heads hang below the ceiling.

Answer: (D)

Pendant sprinkler heads are designed to be suspended from the ceiling and hang down into the space below, so their water spray is directed downward into the protected area. This down-ward orientation is ideal for open or exposed ceilings, helping ensure the water reach reaches the space beneath and isn’t obstructed by ceiling-mounted piping. Upright heads mount on top of vertical runs, sidewall heads are placed on a wall near the ceiling, and the spray patterns vary with orientation, so they aren’t identical in all cases.