Which of the following is a limitation of pressure filters?

The statement that pressure filters cannot handle large water volumes is indeed a limitation. Pressure filters are generally designed for certain flow rates and volumes, and exceeding these limits can lead to inefficiencies or failures in the filtration process. They typically operate at higher pressures and are best suited for smaller or medium-sized applications where the flow rate remains within specific operational parameters.

Options suggesting that they are the only option for large installations or the most expensive filtration method don’t capture the true nature of pressure filters in the context of their performance and application. Other filtration systems, such as gravity filters or fluidized bed filters, can accommodate larger water volumes effectively, while costs can vary based on design and application rather than categorically placing pressure filters as the highest expense. Moreover, the requirement for frequent manual cleaning isn’t inherently a primary characteristic of pressure filters; many modern systems are designed to minimize maintenance needs through backwashing and self-cleaning features. Thus, while in specific contexts some maintenance might be required, this is not a defining limitation of pressure filters across all situations.