Fixing Water Hammer: Techniques and Solutions for Quieter Pipes

Water hammer, a common issue in plumbing systems, occurs when flowing water is suddenly stopped, resulting in a loud, rattling noise. This phenomenon can be both annoying and potentially damaging. In this article, we will explore various methods to fix water hammer and ensure your plumbing remains quiet.

Understanding Water Hammer

Water hammer is the result of the sudden stop of moving water, converting its kinetic energy into pressure, which then reverberates through the pipes. To diagnose the issue, you can use a pressure gauge to check the water pressure in your system. Normal residential pressure should range from 40 to 70 psi. If your incoming line pressure is above 70 psi, you may need to install a pressure regulator to reduce it to about 55 psi.

Low-Cost Solutions for Water Hammer

For those with normal water pressure, installing a hammer suppressor in your house can effectively stop the sound. Here’s how to do it:

Turn off the water supply valve. Install a “T” junction pointing vertically and fit about two feet of pipe blocked off at the top end of the “T”. Attach the upright pipe to the vertical junction. Turn on the water supply and let it run.

The trapped air in the upright pipe will help to dampen the hydraulic shock, effectively reducing the water hammer noise.

Additional Solutions for Quieter Pipes

For more specific issues, such as water connections to your laundry machine or the solenoid valves in a washing machine, consider using a specially designed kit. The brand Oatey offers a great solution that includes water hammer arrestors. These devices are essentially small copper shock absorbers that can be installed near problematic areas or directly on the washing machine connections.

DIY Tips for Fixing Water Hammer

Here are some additional DIY techniques to reduce water hammer:

Installing a T-Fitting with an Air Bumper: Cut in a T-fitting on the hammering line, connect a 1’-2’ (30cm-60cm) piece of 1/2” pipe, and cap it off on the other end. Ensure the pipe is pointing upwards or as steeply as possible. This creates an air bumper that helps to absorb the shock. Pressure Regulator: If the water pressure is consistently high, install a pressure regulator to bring it down to a safe level. Opening Air Valves: In some cases, opening the air valves on the water supply line or closing and reopening the economizer and steam drum valves can help.

Conclusion

Water hammer can be a nuisance, but with the right techniques and tools, you can effectively reduce or eliminate this unwanted noise. Whether you choose a DIY solution or a professional kit, ensuring your pipes do not produce a water hammer will lead to a more peaceful environment in your home.

Fix the sound of your pipes today and enjoy a quieter home!