What is the defining feature of extra large orifice sprinklers?

The defining feature of extra large orifice sprinklers is that they require less pressure to achieve a certain discharge density. This characteristic is particularly advantageous in various sprinkler system designs, as it allows for effective water distribution with lower water pressure, which can help in conserving water and reducing energy costs associated with pumping systems. By allowing effective coverage with lower pressure, these sprinklers can be used in scenarios where the available water supply may not support higher pressure systems or where a more efficient design is required.

This design aspect contrasts with other types of sprinklers, which may rely on higher pressure to meet their operational needs, potentially increasing costs and complicating system setup. In the context of system design and efficiency, the lower pressure demands of extra large orifice sprinklers make them an attractive option for large-area coverage.