In which position should pendant-type sprinkler heads be used?

Pendant-type sprinkler heads are specifically designed to be installed in a downward orientation. This downward positioning is crucial because it allows water to be effectively distributed in a wide coverage area below the sprinkler head. The design of pendant sprinklers includes a deflector that directs the water flow in an optimal pattern, ensuring that it reaches the floor and spreads out to cover the area effectively, thus enhancing the fire suppression capabilities within a space.

In contrast, using these sprinklers in an upward, horizontal, or inclined position would hinder their performance. For instance, an upward position would prevent the water from reaching the intended space, while a horizontal or inclined installation would not allow the sprinkler to disperse water efficiently due to gravity and the intended design of the device. Therefore, the downward orientation is essential for maximizing the effectiveness of pendant-type sprinkler heads in controlling fires.