Water Hammer Arrester Valve - Straight - Brass is rated
Rated 3 out of
OK for minor pipe knocking
Purchased a pair of these for the washing machine hot and cold water lines. We have serious pipe knocking issues in our home and the largest of which occur during operation of the washing machine. These did not completely eliminate the knocking, however initially they did reduce the sound significantly. After 8 months in service, the knocking has increased in volume again and is almost at the levels it was prior to installation of these units. Be advised that they will likely work fine for minor pipe knocking applications, however for the cost, they do not solve the problem.
Date published: 2017-10-11
Rated 5 out of
Easy and quick to install. Greatly reduced the water hammer effect from the washing machine. Installed two of these, one on the cold and the other on the hot.
Date published: 2016-12-30
Rated 2 out of
Flaw design or cheap material- works 3 months
Pros: *Excellent customer service! I called, they sent four new replacements at once.
*I like it has the built in shut off valve. Save me money not to call plumber to fix my leaking water faucets by screwing this thing into the leaked faucet.
Cons: It worked for 3 months and the water/pipe hammer banging noise was back. They sent free replacements, I kept the first pairs connected to the wall hot and cold water outlets. I added the second pair at the back of washing machine wall to the two inlets for hot and cold water. The pipe banging noise stopped for three months, but after that the water hammer noise came back.
Conclusions: *The design looks right but I presumed the air chamber is not properly sealed or the materials is cheap (Chinese recycled rubber ring). I think the water hammer noise caused by the air chamber without air, but filled with water
* You pay for the expensive price of made in USA product, but the quality is belonging to China standard.
Date published: 2019-09-16
Rated 5 out of
Washing machine is quiet now!
These were easy to install and make a huge difference.
Date published: 2018-04-09