What is the surge called when water flow is suddenly stopped?

What is the surge called when water flow is suddenly stopped?

• A. A water surge
• B. A pressure spike
• C. A water hammer
• D. A pipe shock

Answer: (C)

When water is flowing and is stopped suddenly, the moving water doesn’t stop instantly, so its inertia creates a high-pressure transient in the piping. This pressure surge travels through the system and is known as water hammer. The rapid pressure rise can cause loud banging, joint and pipe stress, and potential damage if the system isn’t designed to absorb it. Slow valve closure or devices like water hammer arrestors help dampen the surge. Other terms like “water surge” or “pressure spike” describe aspects of the phenomenon, but the standard, recognized term for this event is water hammer.

When water is flowing and is stopped suddenly, the moving water doesn’t stop instantly, so its inertia creates a high-pressure transient in the piping. This pressure surge travels through the system and is known as water hammer. The rapid pressure rise can cause loud banging, joint and pipe stress, and potential damage if the system isn’t designed to absorb it. Slow valve closure or devices like water hammer arrestors help dampen the surge. Other terms like “water surge” or “pressure spike” describe aspects of the phenomenon, but the standard, recognized term for this event is water hammer.