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🔧 Stop the knock, keep the calm — plumbing peace of mind in a pack!
The EFIELD MH-231-2-FM is a 2-pack stainless steel tee water hammer arrestor designed for 3/8" compression x female compression connections. Rated for up to 250 PSI and 250°F, it reduces water hammer noise and pressure spikes, protecting faucets and dishwashers. Certified lead-free and compliant with CUPC and NSF standards, it ensures safe potable water use. Compact and easy to install, this arrestor is a must-have for quiet, durable plumbing systems.
| ASIN | B0BW6YCH3V |
| Best Sellers Rank | #71,646 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #2,378 in Pipe Fittings |
| Brand | EFIELD |
| Brand Name | EFIELD |
| Color | Brass |
| Connector Type | Tee |
| Customer Reviews | 4.0 out of 5 stars 82 Reviews |
| Exterior Finish | Brass |
| Global Trade Identification Number | 00810110602588 |
| Included Components | body |
| Item Dimensions | 5 x 3 x 1 inches |
| Item Type Name | SS Water Arrrestor |
| Item Weight | 0.38 Kilograms |
| Item dimensions L x W x H | 5 x 3 x 1 inches |
| Manufacturer | Efield |
| Manufacturer Part Number | 231 |
| Material | Stainless Steel |
| Material Type | Stainless Steel |
| Model Number | 231 |
| Number of Pieces | 2 |
| Size | SS Pack of 2 |
| Thread Size | 0.375 inch |
| Thread Type | NPT |
| Unit Count | 2.0 Count |
R**N
Does the job, at least for relatively mild water hammer knocking.
Wife had noticed some very mild hammering with her bathroom sink. We tried the free method of shutting off water main and opening taps; that didn't work. These were easy to install in minutes, and the noise vanished and has not returned.
J**R
Water Hammer protection!
Well made product, meets expectations. Works well
P**B
does NOT work
total waste of money. i've installed two on each of my toilets as was getting a loud pipe bang when the flapper inside toilet would close. the bang still is present.
E**Z
Great option for fixtures that are experiencing water hammer
As a plumber these are great items. Very easy to install and perform perfectly with no leaking. Extremely durable and affordable price. Perfect for homeowners looking to fix that water hammer for a great price and cutting the plumber out.
K**E
Stopped hammering pipes
Install at toilet and kitchen faucet. Hammering pipe stopped
J**M
it works
Got them and installed today. Once you identified which fixture causes the water hammer, install it on the supply line or lines to that fixture and it will work. How long will it last, we will see.
M**K
Installed inline from the water shut-off valve for use on automatic sensor faucet
Just received it today and installed it inline from the water shut-off valve for use on the automatic sensor faucet. Easy to install: 1) Shut off the water valve. 2) Remove water lines. 3) Attach the arrestor to the valve. 4) Attach the water line to the arrestor. After installation, the loud banging noise from the pipes was reduced. Hoping that it continues to work for a while as I saw in another review that it only worked for 2 months.
M**N
One out of four worked
I installed these in the supply lines for a faucet. One of them worked and stopped the water hammer. The other one did not work at all. I reached out to the manufacturer a week ago about a remedy for the defective water hammer arrestor, but have not heard back yet. I purchased another two hoping that at least one would work and I could finish the faucet. However, neither of the two new ones worked. Poor quality and poor value
R**R
No Hammer
Works perfectly, no water hammer when the new Delta H2O faucet solenoid closes.
A**E
Ne pas trop serrer les boulons
Facile à installer. Pour l’instant, il semble bien faire le travail pour lequel je les ai achetés.
J**L
Leaky Connections - Poor product
I purchased four of these water arrestors. The connections on three leaked. After wasting time trying different options to stop the leaks, I threw them away.
A**R
Works fine upon installation
I did see the bad reviews on this arrestor, but gave it a try, since it's half the cost of the Sioux Chief equivalent (660-GTR1B). Those previous arrestors lasted about 3 years, which I think is a decent lifespan, given the hardness of the water in this area. The installation was straightforward, and this device did stop the water hammer effect on our cold water supply line for the kitchen sink. I can't give it a 5 star because length of service is important in these devices. If it lasts 2+ years, I'd give it a 5 then.
C**.
Not very useful
Basically didn't do anything. The sound may be slightly less loud than before, but no exactly what I expected.
Trustpilot
2 weeks ago
2 months ago