water hammer arrestor dishwasher

Understanding Water Hammer Arrestors for Dishwashers

If you've ever experienced a loud banging noise in your plumbing system when a dishwasher or other appliance shuts off, you may have encountered a phenomenon known as a water hammer. This unwanted noise can not only be annoying but can also indicate potential damage to your plumbing. To mitigate this issue, homeowners often turn to water hammer arrestors. In this article, we’ll explore what water hammer is, how it affects dishwashers, and the role of water hammer arrestors in solving this problem.

What is Water Hammer?

Water hammer is a pressure surge or wave that occurs when a fluid in motion is forced to stop or change direction suddenly. This phenomenon typically happens when a valve closes quickly at the end of a pipe system, causing a pressure spike that leads to loud banging or hammering sounds in your pipes. Although these noises are often temporary, prolonged water hammer can cause serious damage, including burst pipes, loose fittings, and even premature failure of your dishwasher.

How Does It Affect Dishwashers?

Dishwashers are particularly susceptible to water hammer due to their rapid opening and closing of valves during cycles. When a dishwasher fills or drains, the water pressure fluctuates dramatically. If the transitions happen quickly, they can trigger water hammer. This can lead to the unpleasant sounds you hear, which can be disruptive and indicative of other plumbing issues. Beyond the noise, frequent water hammer can stress the dishwasher’s components, potentially shortening its lifespan and efficiency.

What are Water Hammer Arrestors?

Water hammer arrestors are devices designed to absorb the shockwave created during a water hammer incident. They help mitigate the pressure surge that causes the banging noise. Essentially, these devices contain a cushion of air or gas that compresses when a surge of water passes through, which helps dampen the sudden pressure increase. Water hammer arrestors are typically installed near appliances that are prone to water hammer, including dishwashers, washing machines, and toilets.

How to Install a Water Hammer Arrestor

Installing a water hammer arrestor is generally a straightforward process. However, if you're not comfortable with plumbing tasks, it’s advisable to hire a professional.

1. Locate the Water Supply Line First, find the water supply line that feeds your dishwasher.

2. Turn Off Water Supply Before making any installations, turn off the water supply to prevent leaks and spills.

3. Cut the Pipe You may need to cut the existing pipe using a pipe cutter or hacksaw to create space for the arrestor.

4. Install the Arrestor Attach the water hammer arrestor to the cut section of the pipe. Ensure that the arrow on the arrestor points in the direction of the water flow.

5. Secure Connections Use pipe fittings or soldering, ensuring all connections are secure to prevent leaks.

6. Turn On the Water Supply After installation, turn the water supply back on and check for leaks.

7. Test the System Run your dishwasher to see if the noise has been reduced or eliminated.

Benefits of Using Water Hammer Arrestors

Installing a water hammer arrestor can bring numerous benefits

- Noise Reduction The most noticeable benefit is the reduction of the banging noise associated with water hammer.

- Reduced Risk of Damage By absorbing the shockwaves, the arrestor can decrease the likelihood of wear and tear on your dishwasher and plumbing.

- Improved Longevity By minimizing stress on your appliances, arrestors can help extend their lifespan.

- Simple Installation Many homeowners can install these devices with basic tools, leading to cost savings compared to professional plumbing interventions.

Conclusion

In conclusion, if you’re experiencing water hammer from your dishwasher, seeking a solution through the installation of a water hammer arrestor is advisable. These devices can prevent not just the annoying sounds but also potential damage to your plumbing system and appliances. Understanding and addressing water hammer can lead to a quieter home and a more efficiently running dishwasher, ensuring peace of mind for you and your family. If you’re ever in doubt, don’t hesitate to consult with a plumbing professional to ensure you find the best solution for your home’s plumbing needs.