Do you hear a loud banging sound every time your washing machine finishes a cycle? That sudden, startling thud against your pipes is more than just annoying; it’s a sign of a common plumbing problem called water hammer. This shockwave can damage your pipes over time, leading to leaks and costly repairs. Choosing the right water hammer arrestor for your washing machine seems simple, but the sheer number of types and sizes available can quickly turn a quick fix into a confusing chore.
Many homeowners worry about picking the wrong size or type, fearing they will waste money or still end up with noisy pipes. We understand that frustration! This guide cuts through the confusion. We will clearly explain what these essential devices do and how they protect your home’s plumbing system. By the end of this post, you will know exactly which washing machine water hammer arrestor fits your needs perfectly.
Ready to silence those noisy pipes for good? Let’s dive into everything you need to know about finding and installing the perfect solution for your washing machine.
Table of Contents
Top Washing Machine Water Hammer Arrestor Recommendations
- 2 Pieces Stainless Steel Water Hammer Arrester For Washing Machine Supply Valves or Directly to Washing Machine Tube Connection:
- 3/4 inch Female Swivel Hose Thread x 3/4 inch Male Hose Thread; Max working pressure: 250 PSI
- Can be Installed Horizontally or Vertically
- Aborb the Unstable Water Shock and Noise to Protect Washing Machine Control System
- Low lead Brass made body
- 2 Pieces Angle Stainless Steel Water Hammer Arrestor For Washing Machine Supply Valves or Directly to Washing Machine Tube Connection:
- 3/4 inch Female Swivel Hose Thread x 3/4 inch Male Hose Thread; Max working pressure: 250 PSI
- Can be Installed Horizontally or Vertically
- Aborb the Unstable Water Shock and Noise to Protect Washing Machine Control System
- Low lead Brass made body
- Water hammer arrester tee
- Install on washing machine supply valves or directly to washing machine tub or shower tee
- 3/4-Inch female swivel hose thread connection
- 3/4-Inch male hose thread connection
- Systems which exceed 60 PSI (414kPa) static pressure shall be installed with a pressure reducing valve upstream of the arrester.
- Straight – straight compression arresters install on any ½" nom. Copper leg or riser and are especially popular in retrofitting ½" nom. Air chambers
- Straight – straight sweat arresters are compatible with press-fitting systems, such as viega propress and all push-fitting systems
- Straight – pex miniresters are available with F1807, F1960 and viega pexpress connections
- Tee – hose tee arresters install on washing Machine supply valves or directly to washing Machine
- Tee – full slip tee sweats in-line on ½" cts near problem valve or Fixture
- 【PACKAGE INCLUDES】: 3/4" GHT Straight Stainless Steel Water Hammer Arrestor*2; Sealing Tape*1.
- 【3/4" GHT WATER HAMMER ARRESTOR】: This straight water hammer arrestor connects 3/4" GHT Male and 3/4" GHT Female pipe or fitting. Its MAX working pressure and temperature can be rated up to 250 PSI and 180°F.
- 【PROTECT YOUR PIPES】: SUNGATOR 3/4" straight water hammer arrestor can prevent pipes from shaking and banging, reduce the unstable water pressure and noise, thus protecting household plumbing system. This mini residential water hammer arrestor is used for washing machine, laundry washer supply valve, garden hose, outdoor spigot, etc.
- 【SAFE TO USE】: Conforms to American standards and meets cUPC and NSF requirements, our 3/4" premium washer hammer arrestor is safe for water distribution.
- 【LONG LASTING】: Forged from solid brass that delivers high corrosion and abrasion resistance performance, SUNGATOR 3/4" water hammer arrestor is excellent for pipe fitting system as it can withstand long period of wear and tear.
- 【PACKAGE INCLUDES】: 3/4" GHT Angle Stainless Steel Water Hammer Arrestor*2; Sealing Tape*1.
- 【3/4" GHT WATER HAMMER ARRESTOR】: This angle water hammer arrestor connects 3/4" GHT Male and 3/4" GHT Female pipe or fitting. Its MAX working pressure and temperature can be rated up to 250 PSI and 180°F.
- 【PROTECT YOUR PIPES】: Protect your washing machine control plumbing system with our 3/4" angle water hammer arrestor, which can prevent pipes from shaking and reduce noise. Mini residential water hammer arrestor, perfect for laundry washer supply valves or washing machine tube connections.
- 【SAFE TO USE】: Conforms to American standards and meets cUPC and NSF requirements, our 3/4" premium washer hammer arrestor is safe for water distribution.
- 【LONG LASTING】: Forged from solid brass that delivers high corrosion and abrasion resistance performance, SUNGATOR 3/4" water hammer arrestor is excellent for pipe fitting system as it can withstand long period of wear and tear.
- 3/4" GHT WATER HAMMER ARRESTOR: This straight water hammer arrestor connects 3/4" GHT Male and 3/4" GHT Female pipe or fitting. The MAX working pressure and temperature can be rated up to 250 PSI and 180°F.
- Noise Reduction: This Water hammer arrestor washing machine prevent pipes from shaking and pounding to reduce the unstable water pressure and noise.
- Long Lasting: The water hammer arrestors Made from high-quality C46500 brass, known for its high corrosion and abrasion resistance. This material ensures reliability and durability in residential environment.
- Safe To Use: SECKWHALE water hammer arrestor meets American standards and complies with UPC and NSF requirements, ensuring it’s safe for drinking water.
- Flexible Installation: This water hammer arrestor features a flexible design that meets different installation needs and can be installed either horizontally or vertically.
- 【Lead Free Brass】:Forged from solid C46500 brass that delivers high corrosion and abrasion resistance performance.They are certified with ASSE1010,NSF/ANSI 61,cUPC.
- 【Extra-Long Service Life】:This angle water hammer arrestor connects 3/4" GHT Male and 3/4" GHT Female pipe or fitting. Its MAX working pressure and temperature can be rated up to 250 PSI and 180°F.
- 【FUNCTIONALITY】: Water hammer arrestors shall be specifically sized and have sufficient volume of air to dissipate the calculated kinetic energy generated by closing residential washing machine valves. Arrestors shall be installed on both hot and cold supply inlets of washing machine valves. Arrestors shall be approved for installation with no access panel required.
- 【EASY INSTALLATION】This angle water hammer arrestor can be installed horizontally, vertically in any position in between,are expertly designed to absorb Unstable Water Shocks and Noise, safeguarding the plumbing pipeline.
- 【HOW TO CONNECTION】: It's easy to install, you need to turn off the hot & cold water outlets to your washer, unscrew the hoses (they will still have some water left in them, so have a towel handy), screw the hoses into the arrestors first, and then finally screw the arrestors directly in to the back of your washing machine. They have a long stem so they can clear the back panel of the washing machine easily if the inlets are recessed.
Choosing the Right Water Hammer Arrestor for Your Washing Machine
Do you hear loud banging or knocking sounds when your washing machine stops filling or draining suddenly? That noise is called water hammer. It happens because the fast-moving water slams into a closed valve, creating a pressure shockwave. A water hammer arrestor soaks up this shock. This guide helps you pick the best one for your home.
Key Features to Look For
When buying a water hammer arrestor, check these important features:
- Connection Size: Make sure the arrestor matches your washing machine’s hose threads. Most use standard 3/4 inch hose threads (Garden Hose Thread or GHT). A mismatch means it won’t fit.
- Type of Arrestor: There are two main types. Piston-style arrestors are very common and reliable. Diaphragm-style arrestors use a flexible barrier. Both work well, but piston types often last longer under heavy use.
- Pressure Rating: The arrestor must handle your home’s water pressure. Look for a rating that supports the typical pressure range in your house (usually 80–125 PSI).
- Installation Location: Some units are designed to be installed directly onto the supply valve (a “stub-out” mount). Others might require a short piece of pipe. Choose one that fits easily near your washing machine hookup.
Important Materials Matter
The materials used decide how long your arrestor lasts and how well it handles water chemistry.
- Body Material: Brass bodies are the best choice. Brass resists corrosion very well, especially if your water has minerals. Plastic bodies are cheaper but can crack over time or fail under high pressure spikes.
- Seals and Diaphragms: Look for high-quality EPDM or Buna-N rubber for the internal seals. These materials stay flexible and resist breaking down from hot water or chlorine treatments commonly found in household water systems.
Factors That Improve or Reduce Quality
Not all arrestors perform the same. Several factors affect their quality and lifespan:
Quality Boosters:
- Factory Pre-Charged: High-quality units come pre-charged with air or nitrogen at the correct pressure (usually 50 PSI). This means they are ready to work right out of the box.
- Solid Construction: Heavy, solid brass bodies signal better manufacturing and durability.
Quality Reducers:
- Low-Cost Plastics: Cheap plastic housings often fail quickly.
- Unsealed Chambers: If the internal air chamber can leak out over time, the arrestor stops working. Good designs seal this chamber permanently.
- Improper Installation: If you install the arrestor too far away from the washing machine valve (more than 18 inches), its effectiveness drops significantly.
User Experience and Use Cases
The primary user experience improvement is simple: silence. When installed correctly, the loud banging stops immediately. This protects your pipes from wear and tear.
Common Use Cases:
- Rapid Fill/Drain Cycles: Washing machines, especially modern high-efficiency (HE) models, fill and drain very quickly. This rapid change in flow creates the worst water hammer. Arrestors solve this perfectly.
- Old Plumbing Systems: Older homes often have rigid pipes that don’t flex much. Adding arrestors provides the necessary shock absorption that the old plumbing lacks.
- High-Pressure Homes: If your home water pressure is above 80 PSI, installing these is essential maintenance, not just a convenience.
Installation is usually straightforward. You typically screw the arrestor onto the washing machine’s hot and cold supply valves before attaching the hoses. If you are not comfortable turning off your main water supply, hire a plumber.
10 Frequently Asked Questions (FAQ) About Washing Machine Water Hammer Arrestors
Q: What is water hammer, really?
A: Water hammer is a pressure surge. When the fast-moving water stops suddenly in a pipe, the energy creates a shockwave, which you hear as a loud bang.
Q: Do I need one for both hot and cold water lines?
A: Yes, you should install one on both the hot and cold supply valves leading to the washer. Both lines experience surges.
Q: How long do these devices last?
A: A good quality brass arrestor can last 10 to 15 years or longer. Plastic ones might only last 3 to 5 years.
Q: Can I use a generic water hammer arrestor?
A: Yes, arrestors designed for general plumbing work fine. However, make sure the connection size (usually 3/4 inch GHT) is correct for the washing machine hose connection.
Q: How do I know if my arrestor has failed?
A: If you hear the banging noise return after installation, the arrestor has likely failed, or the internal air charge has leaked out.
Q: Does the temperature of the water affect the arrestor?
A: Yes. Hot water can sometimes cause cheaper internal seals to degrade faster than cold water lines. This is why high-temperature-rated materials are important.
Q: Where is the best place to install the arrestor?
A: Install it as close as possible to the washing machine’s shut-off valves—ideally within 18 inches of the valve.
Q: Will this device lower my overall water pressure?
A: No. A functioning arrestor should not reduce your normal household water pressure during appliance use.
Q: Do I need to drain the lines before installing the arrestor?
A: You must turn off the water supply to the washer first. It is also helpful to open the washing machine valves to release any remaining pressure before attaching the arrestor.
Q: Are arrestors mandatory by plumbing code?
A: Many modern plumbing codes now require some form of water hammer prevention on quick-closing valves, like those found on washing machines and dishwashers.