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🔧 Silence the bang, protect your machine — install smart, live smart!
The EFIELD MH-S-241 Stainless Steel Water Hammer Arrestor is a durable plumbing solution designed to eliminate water hammer noise and pressure shocks in washing machine supply lines. Featuring 3/4 inch swivel female and male hose threads, it supports up to 250 PSI and can be installed horizontally or vertically. Made from low lead brass and stainless steel, it is cUPC and NSF certified, ensuring reliable performance and protection for your washing machine’s control system.
| ASIN | B09W22PWJQ |
| Best Sellers Rank | #2,405 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #14 in Pipe Fittings |
| Brand | EFIELD |
| Brand Name | EFIELD |
| Color | Stright2 |
| Connector Type | Coupling |
| Customer Reviews | 4.3 out of 5 stars 183 Reviews |
| Item Dimensions | 4.5 x 3 x 1.2 inches |
| Item Weight | 0.2 Kilograms |
| Item dimensions L x W x H | 4.5 x 3 x 1.2 inches |
| Manufacturer | Efield |
| Material | Brass Stainless Steel |
| Material Type | Brass Stainless Steel |
| Size | P1 |
| Thread Size | 0.75 inch |
| Thread Type | UNF |
| UPC | 791689828411 |
| Unit Count | 1.0 Count |
K**B
Sooo worth it! Helps banging, knocking pipes
After buying a new, stackable washer and dryer, my basement pipes were knocking so loud and shaking the house. I googled and found these may help. Buy two (one for hot and one for cold). They have worked so well and I do not notice any knocking noise any longer.
A**S
Holy smokes, INSTANT fix!
Wow! I have dealt with our washing machine absolutely BANGING pipes sound throughput the house for years. Tried isolating the pipes with foam and stuff to no avail. This little guy fixed it instantly with zero hammering noise. Wish i knew about this fix a long time ago.
C**.
Solidly built at a great price and easy installation!
Does exactly what its supposed to do. Very happy and it's a solidly built Arrestor. Good proce and fast shipping. Recommend.
G**T
Okay but
Works okay but not sufficient. Does NOT stop the hammer
P**R
Works great
Currently using it to remove water hammer from my washing machine. It's been 2 months. If it does ever fail it comes right off the bib. Great product
P**R
Does not last more than a few years.
Don’t expect this to solve the hammer problem for much beyond 2 years. I bought the pair of them and the Cold line arrester went bad after a bit over a year. So in December of 2023 I bought another one. It’s March 2026 and the cold line hammer is back. These new machines do cold rinse and that line gets the most work. So I’m going to try another brand. Hopefully it’s last longer.
D**R
Good Product, Good Company
Good company
Z**A
It stopped the knocking of my water pipes
I used on an outdoor garden hose that used an electric valve to turn on a sprinkler from a remote. The valve going on and off caused my pipes to knock, and this hammer arrestor did what it said and stopped the knocking. Now its a question of endurance. If I have any problems with it in the future, I will come back to change my review.
S**K
Well worth it to stop noisy pipes with sprinkler timer.
I've used this for 2 seasons now and it has eliminated the pipes banging when my sprinkler timer would shut off. Without this, the pipes would bang so loud it would wake the entire household. Now, the taps shut off and you don't even notice! I hope it lasts for a long time.
A**Y
good product and good to deal with.
Does what it says ok.
R**D
Excellent reducing water hammer caused by LG washing machine
Reduced water hammer from LG washer by 80% at startup. Thereafter no hammer.
A**R
Easy to connect and works well
Good value for the money
B**L
Don’t but in UK its mot 3/4 “ BSP
Do not buy if you live in the UK this does not fit 3/4 BSP washing machine connections. Amazon should not promote this item in the UK. It is also shipped from the USA
Trustpilot
3 weeks ago
3 weeks ago