What Is Water Hammer and How Is It Fixed?

If you’ve ever heard loud banging or thudding noises coming from your pipes after turning off a faucet or appliance, you’ve experienced water hammer. This common plumbing issue can be more than just a nuisance—it may also indicate problems that could damage your plumbing system - Call a 24 Hour Plumber in Millbrook, NC. Understanding what water hammer is, why it happens, and how to fix it is key to protecting your home’s pipes and fixtures

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What Is Water Hammer?

Water hammer, technically known as hydraulic shock, occurs when a sudden change in water flow causes pressure to build up in your pipes. When water flow is abruptly stopped by a valve or faucet, the momentum of the moving water creates a shockwave that travels through the pipes, resulting in a loud banging noise.

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Common Causes of Water Hammer

1. Quick-Shutoff Valves:
   • Valves in washing machines or dishwashers that close quickly can cause a sudden stop in water flow.
2. High Water Pressure:
   • Excessive water pressure increases the force of the shockwave.
3. Lack of Air Chambers:
   • Air chambers, which absorb shockwaves, may be missing, waterlogged, or clogged.
4. Loose Pipes:
   • Unsecured pipes can vibrate or bang against walls when water flow changes suddenly.

Why Water Hammer Is a Problem

Beyond the noise, water hammer can have serious consequences for your plumbing system:

• Damage to Pipes and Joints: Repeated shockwaves can weaken pipes and connections, leading to leaks or bursts.
• Damage to Fixtures and Appliances: The force of water hammer can harm faucets, valves, and appliances.
• Premature Wear and Tear: Over time, the strain can reduce the lifespan of your plumbing system.

How to Fix Water Hammer

Fixing water hammer depends on its cause. Here are the most effective solutions:

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1. Install Water Hammer Arrestors

Water hammer arrestors are devices that absorb the shockwaves caused by sudden water flow changes. They are typically installed near fixtures or appliances with quick-shutoff valves, such as washing machines or dishwashers.

• How They Work: Arrestors contain a piston or air chamber that cushions the pressure, preventing the shockwave from traveling through the pipes.
• Best For: Persistent banging noises near specific fixtures.

2. Check and Adjust Water Pressure

High water pressure exacerbates water hammer and puts additional strain on your plumbing system (Learn more about emergency plumbing in Millbrook). Use a pressure gauge to test your home’s water pressure

• Recommended Pressure Range: 40–60 PSI.
• How to Adjust: If the pressure is too high, install or adjust a pressure regulator to bring it within the safe range.

3. Drain and Refill Air Chambers

Air chambers are vertical sections of pipe installed near fixtures to act as shock absorbers. Over time, they can become waterlogged, reducing their effectiveness.

• How to Refill Air Chambers:
  1. Turn off your home’s main water supply.
  2. Open all faucets and flush toilets to drain the system.
  3. Once the pipes are drained, close the faucets and turn the water supply back on to refill the air chambers with air.

4. Secure Loose Pipes

Loose or improperly secured pipes can vibrate or bang against walls when water flow changes. Secure pipes using pipe clamps or straps to eliminate movement.

• Common Areas to Check:
  • Basement or crawl space pipes
  • Pipes behind walls or under sinks

5. Replace Faulty Valves

Worn-out or faulty shutoff valves can cause water hammer. Replacing these valves can restore smooth water flow and prevent pressure surges.

6. Install Slow-Closing Valves

Slow-closing valves reduce the speed at which water flow is stopped, minimizing the shockwave effect.

• Best For: Appliances like washing machines and dishwashers.

Preventing Water Hammer

While fixing water hammer is important, taking steps to prevent it can save you from future issues:

• Install Pressure Regulators: Ensure water pressure remains within safe limits.
• Regular Maintenance: Inspect and maintain pipes, valves, and fixtures to catch potential problems early.
• Use Water Hammer Arrestors: Add these devices to high-risk areas during new installations or renovations.

When to Call a Professional

If water hammer persists despite your efforts, it may indicate deeper plumbing issues, such as pipe damage or blockages. Call a 24 Hour Plumber in Millbrook, NC. A licensed plumber can:

• Diagnose the root cause
• Recommend appropriate repairs or upgrades
• Ensure your plumbing system operates safely and efficiently

Call Us for Expert Water Hammer Solutions

Water hammer can damage your plumbing system and disrupt your Millbrook, NC home’s peace, but it’s a fixable problem. Our professional plumbers specialize in diagnosing and resolving water hammer issues using effective, long-lasting solutions. Contact us today to protect your home and enjoy quieter, safer plumbing!