Which statement describes the purpose of a pressure regulator in an irrigation system?

• A. To increase water pressure for broader sprinkler coverage.
• B. To reduce high supply pressure to a level suitable for sprinklers.
• C. To filter debris before sprinklers.
• D. To measure system flow.

Answer: (B)

Pressure Regulators are used to bring down the water pressure from the main supply to a level that sprinkler heads are designed to operate at. When the supply is too high, spray patterns can become unstable, misting occurs, throws become inconsistent, and fittings wear out faster. A regulator maintains a consistent downstream pressure by throttling flow as needed, so the system performs predictably and components are protected. This device isn’t a filter, and it doesn’t measure flow, and it doesn’t increase pressure; its job is specifically to reduce excessive pressure to what the sprinklers require.