What symptom indicates excessive pressure at a sprinkler head?

What symptom indicates excessive pressure at a sprinkler head?

• A. Misting or fogging
• B. Steady, fine spray
• C. No spray
• D. Low evaporation

Answer: (A)

Excessive pressure makes the water jet break into tiny droplets, turning into a mist or fog around the sprinkler head. When pressure is too high, the flow exceeds what the nozzle and deflector can shape, so droplets become very fine and drift away instead of forming the intended pattern. That misting is a clear sign the system is over-pressurized and can lead to poor coverage and water waste. A steady, fine spray usually means the pressure is within design ranges, no spray points to a blockage or valve issue, and low evaporation isn’t related to high pressure.

Excessive pressure makes the water jet break into tiny droplets, turning into a mist or fog around the sprinkler head. When pressure is too high, the flow exceeds what the nozzle and deflector can shape, so droplets become very fine and drift away instead of forming the intended pattern. That misting is a clear sign the system is over-pressurized and can lead to poor coverage and water waste. A steady, fine spray usually means the pressure is within design ranges, no spray points to a blockage or valve issue, and low evaporation isn’t related to high pressure.