A self-cleaning filtration system is designed to automatically flush out debris.

• A. Screen Filter
• B. Disc Filter
• C. Self-cleaning Filter
• D. Media Filter

Answer: (C)

Self-cleaning filtration systems are built to automatically flush out debris, using a purge or backwash cycle to clear the screen without manual cleaning. This capability keeps irrigation flow steady and reduces maintenance in systems that pick up sediment or organic matter. The description matches this automatic debris-clearing function exactly, making it the best fit. A screen filter is simply the filtering element and generally needs a separate cleaning action. A disc filter traps particles with stacked discs and may backwash, but isn’t defined by an automatic self-cleaning flush. A media filter uses a bed of filtration media and is cleaned by backwashing, but again, the explicit automatic debris flush described points to a self-cleaning filter.