Water Hammer Arrestor for Washing Machine | Noise Reduction

Stop the Bang — Silence Your Pipes Instantly

Tired of loud banging, thudding, or rattling noises every time your washing machine stops filling? The Water Hammer Arrestor is a compact, professional-grade plumbing solution designed to absorb pressure surges and eliminate water hammer noise in your laundry room and throughout your home's pipe system. Made in Mainland China from premium unleaded copper and stainless steel, this arrestor is built to last.

Why You Need a Water Hammer Arrestor

Water hammer occurs when water flow is suddenly stopped or redirected — commonly by washing machine solenoid valves — causing a pressure wave that rattles and bangs through your pipes. Over time, this can damage joints, fittings, and appliances. A quality arrestor absorbs that pressure spike before it becomes a problem.

Key Features

• Premium Materials: Constructed from unleaded copper body and stainless steel components — corrosion-resistant, lead-free (RoHS certified), and built for years of reliable service.
• Effective Noise Reduction: Instantly silences banging, clanging, and vibration in your plumbing system for a quieter, more comfortable home.
• Compact & Space-Saving: Measures approximately 10.6 × 7.1 cm (4.17 × 2.8 inches) and weighs only ~200g — fits neatly behind your washer without crowding your laundry space.
• Easy DIY Installation: Threaded connection makes installation fast and straightforward — no special tools required. Most homeowners can install in minutes.
• Wide Application: Compatible with various pipe layouts and household plumbing systems — ideal for washing machines, dishwashers, and other water-supply lines prone to water hammer.
• RoHS Certified: Meets Restriction of Hazardous Substances standards, ensuring no harmful chemicals in the materials.

Specifications

What's in the Box

• 1 × Water Hammer Arrestor

Perfect For

• Laundry rooms with top-load or front-load washing machines
• Homes with high water pressure
• Older plumbing systems prone to pipe noise
• Dishwasher supply lines
• Any household appliance with a solenoid shut-off valve

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Learn more about household plumbing safety and best practices from the U.S. Consumer Product Safety Commission (CPSC).

Note: Due to lighting conditions and photography angles, slight color variations may appear. Due to manual measurement, minor size tolerances are possible. Please refer to the actual product upon receipt.

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Frequently Asked Questions

Q: What causes water hammer noise in my washing machine pipes?

A: Water hammer is caused by the sudden stopping of water flow when a solenoid valve closes rapidly — common in washing machines and dishwashers. The resulting pressure wave travels through the pipes and causes a loud banging or thudding sound. A water hammer arrestor absorbs this pressure spike, silencing the noise instantly.

Q: Is this water hammer arrestor easy to install without a plumber?

A: Yes! This arrestor features a standard threaded connection that allows for quick, tool-free or minimal-tool installation. Most homeowners can install it in just a few minutes by simply attaching it to the washing machine water supply hose connection. No professional plumber is needed for a basic installation.

Q: Will this water hammer arrestor fit my washing machine supply line?

A: This arrestor is designed to fit standard threaded pipe connections commonly used in household washing machine supply lines. It is compatible with a wide range of pipe layouts. If you are unsure, check your washing machine's water inlet thread size before purchasing to ensure compatibility.

Q: Is the material safe and lead-free?

A: Absolutely. This water hammer arrestor is made from unleaded copper and stainless steel, and is RoHS certified — meaning it meets strict standards for the restriction of hazardous substances. It is safe for use in household plumbing systems.