Water Hammer Arrester for Washing Machine

Parameters of Water Hammer Arrester for Washing Machine

The water washing machine valve is part of the accessories which it connects the two water hoses of the machine

Additional information




Aluminum alloy

Life time:

150000 times On-Off


C37700, Lead-free brass


1/2", 3/4"



Thread connection


Working pressure

12 bar


24 months

Details about Water Hammer Arrester for Washing Machine

Water Hammer Arrester for Washing Machine



1/2″ Pex x 3/4″ MHT Valve

Valve with Copper Water Hammer Arrester 1/2″ Pex x 3/4″ MHT Left Blue Handle

1/2″ Fit x 3/4″ MHT Right Red Handle.

Valve with Stainless Steel Water Hammer Arrester 1/2″ Pex x 3/4″ MHT Left Blue Handle

1/2″ Fit x 3/4″ MHT Right Red Handle.

Valve with Plastic Water Hammer Arrester 1/2″ Pex x 3/4″ MHT Left Blue Handle

Water hammer arresters are designed for washing machines and other plumbing systems. They help to minimize the water hammer effect, which can cause a loud banging noise as water rushes through pipes. Water hammers occur when a valve or faucet is shut off suddenly, resulting in a shock wave of pressure throughout the piping system. The arrester absorbs this shock wave and allows water to flow smoothly. This reduces the noise from the water hammer and helps prevent damage to the pipes from sudden pressure changes.

Installing a water hammer arrester is an easy way to improve your washing machine’s performance, reduce noise levels, and protect your home’s plumbing system from costly repairs due to damaged pipes caused by high-pressure shocks. The device is pretty simple to install, often requiring only essential tools such as pliers and screwdrivers for installation into existing plumbing systems.

Causes of Water Hammer

A water hammer is a loud banging sound that may occur when valves control the water supply close suddenly. It is also referred to as “hydraulic shock” and can be caused by several factors. The most common cause of water hammer is when a rapid closing of the valve causes a pressure wave within the pipes, resulting in loud banging against the pipe walls or other objects. It can also be caused by air trapped in the pipelines, an increased temperature of flowing liquid that creates increased pressure fluctuations, or high-velocity piping systems.

Though a water hammer doesn’t typically cause serious damage, it can become a nuisance if not addressed quickly. For this reason, installing a water hammer arrestor on washing machines and other similar appliances helps to absorb excess kinetic energy from closing valves and reduce or eliminate noise and vibration associated with hydraulic shock.

Benefits of an Arrestor

Water hammer arresters are becoming increasingly popular for washing machine installations in homes and businesses. A water hammer arrester is a device that protects the plumbing system from damage caused by sudden pressure changes, such as when the washing machine quickly fills or empties. Installing an arrester can save you time, money, and headaches by helping to prevent costly repairs due to ruptured pipes or leaks. Not only do these useful devices help protect your plumbing, but they also provide many other benefits.

The most obvious benefit of installing a water hammer arrester is improved safety, as it helps to reduce the risk of flooding due to ruptured pipes or leaking valves. A bonus is that they also help reduce noise levels in your home, often eliminating those annoying banging sounds associated with washing machines.

Types of Arrestors

A water hammer arrester is an important part of any washing machine setup. It helps to protect the plumbing system from high-pressure surges that sudden stops in the water flow can cause while washing laundry. Without this protection, pipes can burst or become damaged due to these pressure spikes. Several types of arrestors available on the market provide varying levels of protection from water hammering.

The most basic arrester type is an air chamber, which consists of a sealed tube with an open end connected to the main line between the faucet and shutoff valve. This device allows excess pressure to dissipate into its chamber before reaching other areas in the plumbing system.

Installing an Arrestor

Water hammer arrestors are essential equipment for any washing machine setup. This device is designed to absorb the water pressure shock when the washing machine starts and stops. Installing an arrestor will provide significant benefits to the homeowner regarding safety, efficiency, and increased longevity of their washing machine.

The installation process for an arrestor is relatively straightforward. The first step is to locate the hot water supply line leading into the house, usually at a point near where it enters from outside or under a sink cabinet. Then, using a pipe wrench or adjustable pliers, loosen the lock nut at the end of this line before attaching one end of the arrestor. Next, attach another section of copper tubing between this outlet and your washing machine inlet valve, ensuring it fits securely with no leaks.

Maintenance Tips for Water Hammer Arresters for Washing Machines

Regular maintenance of your water hammer arrester is key to keeping it in top condition. It’s essential to check the unit every few months and ensure no signs of wear or damage. Here are some tips on how to properly maintain your water hammer arrester:

First, inspect the unit and ensure all connections are secure and free from debris or leaks. Also, check the pressure gauge regularly and adjust it as needed to prevent water hammering. Second, replace any worn-out parts with genuine replacements available at your local hardware store. Finally, always use a professional plumber when making repairs or replacing parts, as they will have the necessary knowledge and experience.


Water Hammer Arrester for Washing Machine is an important device that can help protect your washing machine and pipes from the damaging effects of a water hammer. A water hammer arrester allows a sudden burst of pressure to escape, preventing significant damage or destruction of your plumbing system. Installing a water hammer arrester is highly recommended for any home or business with a washing machine.

After learning about the importance and function of a water hammer arrester, it’s clear that this device should be installed in any home or business with a washing machine. The installation process is pretty straightforward and relatively inexpensive compared to the cost of repairs due to water damage caused by high-pressure bursts.


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Metals Vavles Works on Plumbing System

Plumberstar valve fabricator in China. Our main parts for heating pipelines and intelligent water control can supply you with a one-stop basket solution to get your ideas and demands. From design to packaging and logistics are our duty—brass valves and fittings applied in-house, in industry, and commercial construction, in residential. There are related to water pipe control solution, and we have rich experience for outdoor frostproof hydrant and pex heating water manifold indoor.

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Plumberstar, founded in 2006, offers high-quality, customizable residential valves and pipe fittings for plumbing and heating systems, including metal valves, brass products, bibcocks, and stainless steel accessories.
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Plumberstar offers brass and stainless steel 304 valves, as well as HPVC and cast iron plumbing parts. Available in sizes ranging from 1/4 inch to 4 inches with BSP(G) and NPT threads. Products include shut-off needle valves, heating floor manifolds with 1-inch gauges and flowmeters, brass nipples, elbows, extensions, compression fittings, and adapters. Custom manufacturing plumbing products is also available.

How to benefit You

Plumberstar delivers reliable, high-quality plumbing solutions with competitive pricing, extensive customization, and free pressure testing. Our ISO 9001 certified products ensure safety, efficiency, and durability, meeting international standards for residential and commercial needs.

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Safety Water Solution

Plumberstar works in residential, irrigation, and commercial application. The relief safety valves are used in various applications, such as water heaters, air compressors, its automatic release of the excess pressure or vacuum from a heating system.

Advantages of Plumberstar

Plumberstar products design based on simple structure aim to time-saving installation for consumers and aim to save the cost of customers for building construction.

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We boast 18 years of expertise in water and gas projects and long-term partnerships with top global clients.

We offer competitive pricing, tailored solutions, and flexible solutions. Quality is our cornerstone. We conduct three random inspections and a final QC check for each project, with detailed reports for clients and a 48-hour emergency response system.

Customize-Design Brass Copper Fitting

Copper Pipe fitting 1/2 inch 90-degree Elbow, nipple, bush, and reducer connects PEX Pipe in water distribution and hydronic heating systems.
Low-cost solution to connect copper Pipe Tubing, stainless steel insert, and adapter. The connection system is perfect for your next commercial or homeowner plumbing project.

Advantages for distributer, wholesaler, Supermarket and Trading

Plumberstar is looking for long-time cooperation with partners, our advantage will benefit each other, and growing together, our extra service including design, new tooling, discount and quality tracing system.

★ Moderate Pricing – Plumberstar can provide various projects with different economic basket services. Water control project drawing design and artwork works are free. 

MOQ and Delivery – Lower MOQ even reaches 100 units and sampling time within 15 working days, and the leading time is 30 working days of mass production,

Non-Disclosure Agreement – Plumberstar will not provide your competitors with the same valves and manifolds. And help you to get more market shares.

Quality and Service–Our defect rate reached 0.459% in the last two years from customers feedback, and the Inspection report can provide you with each order

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Discount and Quantity– Heavy quantity can increase production capacity with effectiveness. And the accessories and spare parts purchased with competitive cost of valves.

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Our aim is not only to provide valves but we help customers to design products,design artwork,valve proposal, book shipment,Installation tutorial

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We are free design your valves according to your inquiry of your plumbing system,no extra cost.

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We help customers to book a container, documents preparation, and clearance, even to warehouse

Frequently Asked Questions

Here are typical questions by customers asked with usual, please feel free contact us if any further confused.

Brass valves have many different types, such as ball valves, garden tap, check valve, strainer, angle valve, gate valve, foot valve, and drain valve. The radiator valve and thermostatic mixing valve are works for water temperature. All of these valves are work for water plumbing systems, plumbing repair, and installation. So have to let water shut-off and shut-on. Some heating systems are related to hot water and cold water mixing for temperature control and stability. Our intelligent valves are functional. There are applications in commercial, residential, and industrial areas.

Underfloor heating radiant pex manifolds are usual for residential water distribution in a household, and it's top-rated in the home building industry. Manifold plumbing systems control hot and cold water that feeds flexible PEX supply lines to individual fixtures. Then water temperature is warm and stable in each room. Meanwhile, the heating accessories-flow meter gauge will monitor water and temperature in each room.

The motorized ball valve works automatically open and closed; they work with 220v-230v AC and 24v DC; they are applications in the heating system, air conditioner,3D printer, and others. The solenoid valve is with similar features.

Would you please submit the form at the bottom of the page or send an email directly:info@plumberstar.com? My WhatsApp: +86 15968648802. Can you send us pressure demands, size package, and quantity if available?

It's able to provide free samples for your evaluation with 15 working days about.

Our MOQ is significantly lower from 100-5000 pcs are available. It depends on different items.
We can fabricate your specified requirements.

It's about 35 days if with regular proucts; New tooling and samples will take 15-20 days, Normal samples will take 7 days.

It means that you need to check the plumbing system at first, then realize your requirements, and get out different valves with different applications and functional with controlling; of course, may be no need to use brass valves due to the high cost. You can use plastic, iron, zinc alloy, and aluminum raw materials instead of brass, but brass and stainless steel are reliable with 3 years warranty. If you don't know how to choose, please call us or email us.

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