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Introducing Watts Water Hammer Arrestor, designed to protect your plumbing system from water pressure shock and prevent disastrous water hammer conditions. This highly effective device controls pressure spikes caused by sudden changes in water flow and is ideal for use in dishwashers, clothes washers, quick-closing faucets, and other plumbing fixtures. The Water Hammer Arrestor features a stainless steel body with a brass adapter for durable and reliable performance. It's easy to install at any angle, making it an excellent addition to new or existing plumbing systems. The Watts Water Hammer Arrestor comes in 1/2-inch NPT size and has a factory set pressure range of 25 to 35 psi. Choose Watts for superior plumbing protection that keeps your system running smoothly and efficiently.