Grohe 46138000 1/2 in. Quick Coupling, one-size

Easy to use and a big improvement for the original connections

It fixed my leaking coupling!!

Easy to install and no leaks!!

A great idea, but a little pricey. If I have to change the fawcet hose on the sink every 15 or 20 years, the convenience isnt all that important.

Quality

Shipment arrived as promised

My faucet, which had the Yellow Grohe Quick Coupling, broke about one centimeter below the orange band, which resulted in water spraying all over the inside of my sink when I turned on the faucet. Evidently, this is a design issue with this coupling and it is notorious for failing around the 5 to 7 yrs after installation (from what I read online). The part was very easy to disconnect and I ordered a replacement yellow disconnect immediately. However, in looking on-line I saw other Grohe quick couplings and could not find out any information regarding the difference between the yellow and green Quick Couplings or their specifications except the yellow was for Faucets manufactured before 2005 and the green was for 2005 and later faucets. So I dug a little deeper and found a parts supply website I asked the following questions regarding the difference between the green and the yellow quick coupling to a Grohe part supplier: Is there a difference between the Grohe Yellow Quick Coupling (#46 138) and the Grohe Green Quick Coupling (#46 315). That is, are they interchangeable? Or is there a difference in the amount of water they allow to flow through them? Or is it only that the green is a newer quick coupling redesigned to fix a design flaw with the yellow coupling (which is notorious for breaking in 5 to 6 years)? The response I got was the following: Thank you for your question! The Grohe 46 138 is the older version of the Grohe Green Quick Coupling (46 315). These are interchangeable, so you can use either one. Noting that you are aware of a particular design flaw on the 46 138, I would advise using the 46 315 just to make sure you are getting the newest available part. I actually bought both parts, and the yellow is slightly longer (which does not affect the functionality of the connector from anything I can detect, but that could be what causes it to be weaker). So a long story short, I purchased the green quick coupling (which costs a few dollars more) and installed it. It installed easily and I have had no issues with it leaking and all seems to be working fine with it. I cannot say whether it is a better part yet, but I am betting that the shorter design has made is structurally more sound and I am hoping that it will not fail as quickly as the yellow coupling did. Regardless of the above, given a part like this that is subject to constant movement over the years, I would have expected Grohe to make it out of more lasting material (i.e., metal) that would not break during the faucets normal life span. It is not the cost of the faucet or the replacement part that is the issue but the damage to my cabinet and flooring from the water that built up and seeped through the floor that is the bigger issue. Grohe should be embarrassed by this, as it does not live up to the expected standards for which I believed Grohe was manufactured. In the future, if I purchase another Grohe faucet, I will look to see what parts are plastic and if they still have this quick coupling made of a material that will not last then I will move on to a better faucet. It is not worth risking the thousands of dollars in dammage that can easily occur from a faucet that pours water into you cabinets.

I’ve been experiencing water pressure and flow issues with my Alira faucet. First I replaced the cartridge. That didn’t fix the issue. Next I flushed the water lines. That didn’t fix it. Finally I replaced the yellow quick coupling. That did the trick. I have strong water pressure again. Super easy to install. Glad I was able to find this part on Amazon.

While Grohe manufactures a good product this was manufactured with planned obsolescence in mind….give it 2, 3 or 4 years and it tends to crack at first causing a fine spray…eventually it will break !! It is difficult to find locally and it usually costs more than Amazon Prime !!

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