Which of the following is included as an accessory?

• A. Enclosures
• B. Pressure gauge
• C. Filter
• D. Hose

Answer: (A)

Enclosures are considered an accessory because they provide protective housing and mounting support for other system components, such as controllers or valves, rather than performing the irrigation function itself. They don’t alter water distribution or control logic directly; they protect and organize the equipment and wiring, helping the system operate reliably in various conditions. In contrast, a pressure gauge is a measurement device, a filter directly affects water quality by removing debris, and a hose functions as a flexible delivery or connection path. These are active components of the irrigation process, not just supportive hardware, so they’re not classified as accessories.