Do you need a new water hammer arrestor to prevent a water hammer in your plumbing system? Quick-closing valves, also known as solenoid valves, benefit from these devices that absorb the shock and make for quiet pipes.
However, how do you know which water hammer arrester is best for you? We review some of the best options for you to help you make the best selection.
In this PlumbingNav guide, we will cover:
What is a water hammer arrestor?
Different types of water hammer arresters
What to look for in the best water hammer arrestor
Water hammer arrestor reviews
Image
Product
Our Top Pick
Our Top Pick
Sioux Chief Chief-660-HB 660-HB Water Hammer Hose Arrestor, 3/4-Inch
The Sioux Chief Hose Arrestor 3/4-Inch is a great way to protect your home from water hammers and reduce the chances of damage. This hose arrestor is made with 304 stainless steel, which is durable and long-lasting. It is also easy to install, which makes it more convenient than other models on the market. It can be mounted vertically and horizontally.
A water hammer arrestor absorbs the hydraulic shock caused by a quick closing valve in your piping system, known as a water hammer. Noisy pipes indicate that you have a water hammer.
A water hammer may occur due to a faulty valve or improper installation of a faucet or appliance. It can also happen if you increase the water pressure entering your home from the main water line or your water heater.
The water hammer effect can cause loose pipes that bang into each other, causing damage to the pipe material. A water hammer can also create excessive pressure levels inside your pipes, which is also a potential cause of damage to your pipes.
A component in the T-shape water hammer arrestor absorbs the shock wave to prevent excessive amounts of pressure that creates noise or causes damage to the plumbing material. According to residential building codes, all objects solenoid valves require a water hammer arrestor.
Water hammer arrestors attach to the cold and hot water lines of a faucet or appliance, such as a washing machine.
Different Types of Hammer Arresters
Piston Water Hammer Arrestors
Most water hammer arrestors use pistons to absorb the shock wave caused by a quick-closing valve. Water hammer arrestors that use pistons are the most effective option.
Non-Piston Water Hammer Arrestors
Non-piston water hammer arrestors don’t use pistons. Instead, they use a simple air chamber to absorb the shock.
What to Look For In the Best Water Hammer Arrestor
Size
You need to find a water hammer arrestor that fits the appropriate fixture. Connections vary based on the type of fixture and its location. The most common sizes you will find include ½” and ¾”.
Material
The best water hammer arrestors consist of high-end materials, such as brass, copper, and 304 stainless steel. However, you may also find products made from plastic.
Water Hammer Arrestor Reviews
Now let’s explore our favorite units so you can decide on the perfect choice for your situation.
The Sioux Chief Hose Arrestor 3/4-Inch is a great way to protect your home from water hammers and reduce the chances of damage. This hose arrestor is made with 304 stainless steel, which is durable and long-lasting. It is also easy to install, which makes it more convenient than other models on the market. It can be mounted vertically and horizontally.
Pros
Piston-type water hammer arrestor
Works for both cold and hot water
Easy to install – no access panel required
Cons
Reduces a water hammer but doesn’t eliminate it completely
This Tee Water Hammer Arrestor is a professional-grade product that is perfect for use with 1/2″ PEX tubing. The Lead-Free Brass construction ensures that your water is safe and contamination-free, while the 1/2″ Pex x 1/2″ Pex fittings make installation a breeze.
Watts Water Hammer Arrestor 1/2 in NPT 150 psi is an innovative device that prevents water hammer and the associated damage to plumbing fixtures. A typical installation consists of a Watts arrestor installed between the incoming cold-water supply pipe and a branch line, with a check valve installed on the branch line downstream from the arrestor. The check valve provides isolation for maintenance or replacement of the arrestor.
Stop water hammer with the innovative, push-to-connect design of the SharkBite 3/4 Inch Residential Water Hammer Arrestor. This lead-free brass plumbing device makes it easy to connect two pieces of pipe together without any tool, including CPVC, CTS, and PEX pipe.
Pros
Rated up to 200 psi and 200 degrees
Reuseable up to 4 times
Push to connect (no tools)
Cons
Nylon brushing inside connectors only for PEX piping
Watts Water Hammer Arrestor 1/2 in NPT 150 psi is an innovative device that prevents water hammers and the associated damage to plumbing fixtures. A typical installation consists of a Watts arrestor installed between the incoming cold-water supply pipe and a branch line. A check valve is installed on the branch line downstream from the arrestor. The check valve provides isolation for maintenance or replacement of the arrestor.
Pros
Made from copper
300 psi and 200-degree rating
Compact size
Cons
Not compatible with Uponor PEX “A”
Connector sizes are not adjustable
Reports of leaks
How to Install a Water Hammer Arrestor
Most DIY plumbers can install a water hammer arrestor themselves with some basic tools. You will install water hammer arrestors at each affected fixture instead of installing one at your main water supply for the whole house.
Keep in mind that you will need to install a water hammer arrestor on both the cold water line and the hot water line.
You will also need to find an arrestor that can withstand the heat and pressure requirements of the particular faucet or appliance.
Install it as close to the faucet or appliance as possible between the shut-off valve and the water supply.
See the following video for more information on how to install a water hammer arrestor:
Frequently Asked Questions
Do water hammer arrestors work?
When you buy the right hammer arrestor, it should work. You will not hear as much noise coming from your pipes. The water hammer arrestor will last for years before you need to replace it.
How do water hammer arrestors work?
Water hammers work by absorbing the shock wave caused by the water hammer, using either a piston or an air chamber.
Can you install a water hammer arrestor upside down?
Yes! Some people that the arrestor won’t work properly in certain positions. Luckily, most products work in any position that fits in the space.
Related: See this post if you need to troubleshoot a foghorn-like groan coming from your plumbing.
Meet Your Plumbing Navigator
About Plumbing Navigator
We’re passionate about all things plumbing, and love sharing tips, “how-to”, and reviewing the latest products to help make your project a success!
Learn More Plumbing Tips
Want to tackle more plumbing projects? Check out these helpful guides!
Got Plumbing Questions? Search For In-Depth Answers Below!
About Plumbing Navigator
We write about "all things plumbing," helping you navigate common questions, repairs, and the best plumbing products on the market.
About Plumbing Navigator
We write about “all things plumbing,” helping you navigate common questions, repairs, and the best plumbing products on the market.
