Plumbing & Pipe Repair Diagnostics

What causes 'Water Hammer' in residential plumbing, and what device is commonly used to reduce it?

Next

 Correct IncorrectFast-closing valves (like washing machine solenoid valves) send a pressure shockwave bouncing through pipes. A water hammer arrestor with an air-cushioned piston absorbs the energy.

What causes 'Water Hammer' in residential plumbing, and what device is commonly used to reduce it?

• Excess mineral scale; cured by vinegar flush
• A shockwave from rapid valve closure; cured by installing a piston-style water hammer arrestor
• Cold water boiling in the pipes; cured by insulation
• A leaking faucet; cured by tightening the handle