Hi there
I need to replace the cartridge in a shower mixer valve but every plumbing supplier just scratches their head when they see it. I just need the black part. The brass part of the valve is just for context. The actual problem is the rubber equalizer disk is ripped. It's normally in the cartridge. It's only 4 or 5 years old.

The jpg is in the attachments

Anyone recognize the brand or any advice?

Thanks very much

Well I found out for myself - the brand is "foremost"

I need to replace that same unit, can you provide me with where you ultimately found a shower mixer valve cartridge replacement? I am having troubles tracking down a plumbing supply company which carries this item...

Thanks!

Hi. I have the same problem with this Foremost plastic cartridge. The company supplied a replacement brass unit but when I install it I get water hammer. When I remove the brass one and reinstall the plastic unit, the hammer goes away. Any advice would be appreciated as the company no longer makes the plastic cartridge. Tony

Hi. I have the same problem with this Foremost plastic cartridge. the company supplied a replacement brass unit but when i install it i get water hammer. When i remove the brass one and reinstall the plastic unit, the hammer goes away. Any advice would be appreciated as teh company no longer makes the plastic cartridge. Tony
Hey Tony, Do you have a link to Foremost faucets you can give me? I don't know why one gives you water hammer but it the new cartridge works why not address the water hammer. "Water hammer" happens when you abruptly shut off the water. You have at least 40 pounds of pressure pushing the water flow. The weight of the water hitting a 90 degree bend causes the sound that you hear. We put in air chambers to cushion the hammer much like the shocks on your car.
Back in the 60's we were required to to put air chambers on all bath lavatories and kitchen sinks. Over time water and condensate built up in them and they must be recharged. First turn off the house at the main house shut off valve. Then open hot and cold faucets at the farthest bathroom to prevent air lock.(This is important.) You will find under each fixture little brass or chrome valves. These are called angle stops. With a small pail held under the angle stop to catch the run off look under the handle of the stop and you will see a nut with the stem running through it. This is called the bonnet packing nut. Put your wrench on it and back it off counterclockwise. Now open the stop and remove the stem and washer assembly, The stop will began to drain. When it has quit draining reassemble the stop and move on to the next one. Do this on each one of your angle stops. There will be six of them in a two bath home. When you are done, close off the faucets you have opened, turn on the water to the house, and give yourself a pat on the back.
You have just recharged your air chambers and saved yourself a hefty service call bill. Hope this helps you out TOM

Thank you for the very quick reply. I will try your suggestion. Tony

I, too, could use some help id'ing some valves. These are some crappy tub valves from a manufactured home from the late 80's or earlier 90's. Any help would be great!!

Where can I purchase a repair kit for a leaking Dorf Jupiter Flickmixer Basinmixer set. Have been told Dorf no longer supply parts for these taps.

Hi,
Where did buy the replacement?
Thanks,
Gabe

Hello gb123,

Please, pay attention to dates. The original question was from 2007, and last post was posted 5 years ago. Please, start your new thread

Thank you

Milo