Pneumatic-type ejectors are commonly used under which condition?

Pneumatic-type ejectors are typically employed in situations where ground conditions restrict space. These devices utilize air or gas pressure to create a suction effect, allowing them to function in confined environments where other types of pumps or ejectors might be impractical or cumbersome.

In scenarios where physical space is limited—such as in underground installations or areas with challenging topography—pneumatic ejectors offer a compact solution. They can efficiently transport liquids, even when atmospheric or environmental constraints limit the available installation area. The design and operation of these ejectors often make them more adaptable to restrictive conditions compared to other pumping mechanisms.

Regarding the other conditions listed, while discharge rates, handling of small particulates, and high temperatures are all important factors in plumbing and fluid transport, they do not specifically pertain to the primary advantage of pneumatic ejectors in terms of space limitations. Therefore, the emphasis on ground space restrictions aligns accurately with the correct application of pneumatic-type ejectors.