On the California Grohe models (Euphoria handheld and single shower head), the restrictor/limiter is "glued" to the interior. You probably can't remove the restrictor. Luckily, if you just remove the O-ring (with a dentist pick), the flow rate becomes noticeably faster. The handheld was restricted to 1.75 gpm and the single head (if not CA) is restricted to 2.0 gpm. Removing the O-ring definitely helped. Thanks for the video.
Great video! I was worried about breaking the parts but followed one of the reply/suggestions-and used a sharp sewing needle. The needle worked perfectly. No need to pull the insert out. The needle pulls out the small rubber o ring!
Thanks man. I bought it 2 days ago Grohe Vitalio Start 100 and I was so disappointed, but 1 min with sewing needle and now water flows x3 more and stronger. No need to extract plastic core, you can realy to break these small parts, just use needle and slow hook external radius of rubber ring. It works with city water supply.
This is really useful. There are no other instructions on Grohe Vitalio Comfort 100 and this helped. BUT even taking out the complete flow restrictor I still cannot get it to work with my Bosch combo boiler. I believe the problem is that the flow is *still* not enough to trigger the hot water flow sensor in the boiler. I put the older shower head on, works fine. So this whole “ecojoy 35% less water” concept is probably ok but not on my boiler....
