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10 Best Water Hammer Arrestors 2025 in the United States
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Buying Guide for the Best Water Hammer Arrestors
Water hammer arrestors are devices used to absorb the shock wave caused by sudden changes in water flow, which can lead to loud banging noises in your pipes and potential damage to your plumbing system. Choosing the right water hammer arrestor involves understanding your plumbing needs and the specifications of the arrestor to ensure it effectively mitigates water hammer issues in your home or building.SizeThe size of a water hammer arrestor is crucial because it needs to match the size of your plumbing pipes to function correctly. Sizes are typically measured in inches and correspond to the diameter of the pipes they are designed to fit. Common sizes include 1/2 inch, 3/4 inch, and 1 inch. To choose the right size, you need to know the diameter of the pipes in your plumbing system. If the arrestor is too small, it won't effectively absorb the shock, and if it's too large, it may not fit properly.
MaterialWater hammer arrestors are made from various materials, including stainless steel, brass, and plastic. The material affects the durability and longevity of the arrestor. Stainless steel and brass are more durable and resistant to corrosion, making them suitable for long-term use and in areas with high water pressure. Plastic arrestors are generally less expensive but may not last as long. Choose a material based on the conditions of your plumbing system and how long you expect the arrestor to last.
Pressure RatingThe pressure rating of a water hammer arrestor indicates the maximum water pressure it can handle. This is important because if the water pressure in your system exceeds the arrestor's rating, it may fail to prevent water hammer effectively. Pressure ratings are usually measured in pounds per square inch (PSI). Common ratings include 150 PSI, 200 PSI, and 300 PSI. To select the right pressure rating, check the water pressure in your plumbing system and choose an arrestor that can handle slightly more than your system's maximum pressure.
Connection TypeWater hammer arrestors come with different types of connections, such as threaded, sweat, or push-fit. The connection type determines how the arrestor will be installed in your plumbing system. Threaded connections are screwed onto the pipes, sweat connections are soldered, and push-fit connections simply push onto the pipes. Choose a connection type that matches your plumbing setup and your level of comfort with installation. If you're not experienced with plumbing work, a push-fit connection might be the easiest option.
CapacityThe capacity of a water hammer arrestor refers to the volume of water it can absorb to prevent water hammer. This is often related to the size and design of the arrestor. Higher capacity arrestors are suitable for larger plumbing systems or systems with higher water flow rates. To determine the right capacity, consider the size of your plumbing system and the severity of the water hammer problem. If you have a large home or building with significant water usage, a higher capacity arrestor may be necessary.
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