Understanding Water Hammer Arrestors: How They Work and Why You Need Them

Water hammer is a phenomenon in plumbing systems that can cause significant damage and noise if left unaddressed. By understanding what causes water hammer and how water hammer arrestors function, you can protect your plumbing system and maintain its efficiency. In this article, we will explore the workings of water hammer arrestors, the benefits they offer, and the importance of having them installed in your household.

What is Water Hammer?

Water hammer occurs when moving water in a plumbing system comes to an abrupt stop. This sudden deceleration generates a force that can cause severe damage to pipes, fixtures, and connections. The force is created by the kinetic energy of the water, which is converted into pressure when the flow is suddenly stopped. While water hammer can happen at any time, it is more likely in systems with high water pressure.

The Role of Water Hammer Arrestors

Water hammer arrestors are devices designed to prevent or mitigate the effects of water hammer. These devices work by absorbing the excess energy caused by the sudden stoppage of water flow, thereby preventing the pipes from being damaged by the resulting shock waves.

How Water Hammer Arrestors Work

Water hammer arrestors use a gas pressure chamber and a diaphragm to dissipate the energy of a sudden water pressure increase. Here’s a closer look at their mechanism:

Gas Pressure Chamber: The arrestor contains a sealed gas chamber. This chamber is filled with compressible gas, usually nitrogen, which acts as a buffer. Diaphragm: The inner part of the gas pressure chamber is separated by a diaphragm that is capable of moving when subjected to pressure changes. Activation: When the water pressure increases, the increased force on the diaphragm causes it to move. This movement compresses the gas in the chamber, increasing the gas pressure. Energy Dissipation: The gas pressure rises, and this increased pressure can absorb the excess energy from the moving water, thereby reducing the shock and preventing damage.

By allowing the excess energy to be absorbed, the arrestor stops the solid hammering in the pipes, protecting them from potential damage. This mechanism makes water hammer arrestors a cost-effective and reliable solution.

Why You Need Water Hammer Arrestors

While water hammer can be a minor annoyance, it can also lead to significant damage to your plumbing system. Some of the potential issues include:

Pipe Ruptures: The sudden increase in pressure can cause your pipes to rupture, leading to water leaks and costly repairs. Reduced Fixture Lifespan: The constant and abrupt changes in water pressure can damaged faucets and valves, leading to shorter fixture lifespans. Noise and Structural Damage: The noise caused by water hammer can be disruptive and can even lead to structural damage over time.

Water hammer arrestors provide comprehensive protection against these issues. By installing water hammer arrestors, you can:

Protect your plumbing system from damage. Reduce the noise and vibration caused by water hammer. Extend the lifespan of your plumbing fixtures and appliances. Ensure a more reliable and efficient performance of your water system.

Additionally, water hammer arrestors are easy to install and maintain, making them a practical choice for both residential and commercial properties.

Conclusion

Understanding how water hammer arrestors work is crucial for maintaining a healthy and efficient plumbing system. By preventing the sudden stoppage of water flow, these arrestors can protect your pipes from damage and enhance the overall performance of your water system. If you’re experiencing water hammer in your home or business, consider installing a water hammer arrestor to safeguard your plumbing and reduce maintenance costs.

Frequently Asked Questions

Q: Can water hammer arrestors solve all plumbing problems?

A: No, water hammer arrestors are specifically designed to address the issue of sudden water pressure changes. They are not a solution for all plumbing problems, but they can significantly reduce the risk of damage from water hammer.

Q: How do I choose the right water hammer arrester?

A: When choosing a water hammer arrester, consider the specific needs of your plumbing system, such as water pressure and flow rate. Consult with a professional plumber to ensure you select the appropriate model for your application.

Q: Can I install a water hammer arrester myself?

A: While it is possible to install a water hammer arrester yourself, it is recommended to consult with a professional plumber. This ensures that the installation is done correctly and safely.