Missing Part for Grohe 34-436 Thermostat Shower Valve

Discussion in 'Shower & Bathtub Forum & Blog' started by kjo, Dec 7, 2008.

  1. kjo

    kjo New Member

    Messages:
    1
    Hi all - I got a fantastic deal on a new Grohe 34-436 shower valve this week. I'll spare you the details, but in a word, I can't take it back and am stuck with it. The problem is that before I committed, I didn't notice that there was a part missing. I'm guessing it is a small black or red button that must be depressed to turn the thermostat past 100 degrees. Where the button should be, there is a slot, with a white plastic post that sticks up through the temperature scale indicator ring. In the exploded parts diagram, this would be part #1 "Chrome grohmix scale handle". I can't see the button on the parts diagram, nor can I see it on any picture I've seen of this fixture. I'm not even sure if there IS a button there, but it just doesn't look right.

    Could someone verify that there is supposed to be a button there and maybe tell me what it is supposed to look like? Also, can you offer an opinion as to whether the fixture will be adversely affected if that slot is just left open, because I sure as heck am not going to pay 75 bucks for that part number just for that button. Could you also tell me whether that button truly needs to be depressed before the scale ring will turn past 100 degrees? A bit of extra pressure and it turns for me. The springs seems to be loose enough that it doesn't really require the button. Any advice for making this very expensive fixture not look like it was robbed for spare parts would be appreciated. Thank you in advance!
  2. jadnashua

    jadnashua Retired Defense Industry Engineer xxx

    Messages:
    22,180
    Location:
    New England
    Mine has a button, it appears that recently they changed that to a detent that just requires more torque to adjust past the detent. On mine, you'd physically break something it you tried to move it past the stop. Not sure when they made that change, or if it is universal across their line. Have you tried calling their 800 number?
Similar Threads: Missing Part
Forum Title Date
Shower & Bathtub Forum & Blog what delta plumbing parts am I missing here? Oct 13, 2009
Shower & Bathtub Forum & Blog Help required to fix an Economy Tub Filler with Handshower and missing leg pieces Apr 12, 2012
Shower & Bathtub Forum & Blog Old shower floor missing grout Jan 19, 2012
Shower & Bathtub Forum & Blog hot water is missing Jan 13, 2011
Shower & Bathtub Forum & Blog Grohe grohmix cartridge 47 025 - missing trim and handle, how is it adjusted??? May 19, 2010

Share This Page