Quick summary
- A water hammer arrestor is a device that is installed in a plumbing system to prevent water hammer.
- The arrestor typically consists of a chamber filled with air or gas, which acts as a cushion to absorb the surge.
- The best way to prevent water hammer is to install a water hammer arrestor.
Water hammer is a phenomenon that occurs when water flowing through a pipe is suddenly stopped, causing a pressure surge. This surge can create a loud banging or hammering noise, which is why it’s commonly referred to as “water hammer.” It can also cause damage to pipes, fixtures, and appliances.
How Does a Water Hammer Arrestor Work?
A water hammer arrestor is a device that is installed in a plumbing system to prevent water hammer. It works by absorbing the pressure surge caused by the sudden stoppage of water flow. The arrestor typically consists of a chamber filled with air or gas, which acts as a cushion to absorb the surge. When the water flow is stopped, the pressure surge enters the chamber and compresses the air or gas. This reduces the pressure surge and prevents it from causing damage.
Types of Water Hammer Arrestors
There are two main types of water hammer arrestors:
- Mechanical arrestors: These arrestors use a piston or diaphragm to absorb the pressure surge. They are typically installed at the end of a pipe run or near a faucet or appliance.
- Air chamber arrestors: These arrestors use a chamber filled with air to absorb the pressure surge. They are typically installed at the top of a vertical pipe run.
When to Install a Water Hammer Arrestor
Water hammer arrestors should be installed in any plumbing system that is prone to water hammer. This includes systems with long pipe runs, sudden changes in direction, or multiple fixtures that are used simultaneously.
Benefits of Installing a Water Hammer Arrestor
Installing a water hammer arrestor can provide a number of benefits, including:
- Reduced noise: Water hammer arrestors can help to reduce the noise caused by water hammer. This can make your home or business more peaceful and enjoyable.
- Prevented damage: Water hammer arrestors can help to prevent damage to pipes, fixtures, and appliances. This can save you money in the long run.
- Increased lifespan of plumbing system: By preventing water hammer, water hammer arrestors can help to extend the lifespan of your plumbing system.
How to Choose the Right Water Hammer Arrestor
When choosing a water hammer arrestor, there are a few factors to consider:
- The size of the pipe: The arrestor should be sized to match the diameter of the pipe it is being installed on.
- The pressure rating of the pipe: The arrestor should be rated for the maximum pressure that the pipe can handle.
- The type of application: Some arrestors are designed for specific applications, such as washing machines or dishwashers.
Installation of a Water Hammer Arrestor
Water hammer arrestors are typically installed by a qualified plumber. The plumber will need to select the right arrestor for your system and install it in the correct location.
Troubleshooting Water Hammer Arrestors
If you are experiencing water hammer, there are a few things you can do to troubleshoot the problem:
- Check the arrestor: Make sure that the arrestor is properly installed and that it is the right size for your system.
- Flush the lines: Sometimes, water hammer can be caused by air trapped in the pipes. Flushing the lines can help to remove the air and reduce water hammer.
- Call a plumber: If you are unable to resolve the problem on your own, you should call a qualified plumber.
Information You Need to Know
Q: What are the signs and symptoms of water hammer?
A: The most common signs of water hammer are loud banging or hammering noises in your pipes. You may also notice leaks, damaged pipes, or loose fixtures.
Q: What causes water hammer?
A: Water hammer is caused by a sudden stoppage of water flow. This can happen when you turn off a faucet, flush a toilet, or use a washing machine.
Q: How can I prevent water hammer?
A: The best way to prevent water hammer is to install a water hammer arrestor. These devices absorb the pressure surge caused by the sudden stoppage of water flow and prevent it from causing damage.
Q: What are the different types of water hammer arrestors?
A: There are two main types of water hammer arrestors: mechanical arrestors and air chamber arrestors. Mechanical arrestors use a piston or diaphragm to absorb the pressure surge, while air chamber arrestors use a chamber filled with air.
Q: Where should I install a water hammer arrestor?
A: Water hammer arrestors should be installed at the end of a pipe run or near a faucet or appliance. They can also be installed at the top of a vertical pipe run.
Q: How do I choose the right water hammer arrestor?
A: When choosing a water hammer arrestor, you need to consider the size of the pipe, the pressure rating of the pipe, and the type of application.
Q: How do I install a water hammer arrestor?
A: Water hammer arrestors should be installed by a qualified plumber. The plumber will need to select the right arrestor for your system and install it in the correct location.
Q: What are some tips for troubleshooting water hammer?
A: If you are experiencing water hammer, you can try flushing the lines, checking the arrestor, or calling a plumber.