Water Pressure to Shower Head in Tub/Shower is Low

Discussion in 'Shower & bathtub Forum & Blog' started by Milanomike, Mar 9, 2013.

  1. Milanomike

    Milanomike New Member

    Messages:
    26
    Location:
    Ohio
    Hi Guys,

    Need some help here, 10 year old Am Std pressure balance tub/shower kit (pressure balance valve R120 or R125 series). Diverter valve leaked really bad, little water to shower. Replaced spout/diverter valve, no more leaking at spout, good!. However, pressure to shower head is only a bit better. Disassembled and cleaned shower head, seems fine; however, pressure at shower head with no head on it is not great, water should shoot out of there at decent pressure. By the way, not a "big box" unit, learned long ago to buy this stuff at plumbing supply place.

    Took cartridge off and it looks fine, should I just replace it?

    Was wondering is I should completely disassemble pressure balance unit. There is a plastic piece with an o-ring in the manifold, not sure if this comes out, did not want to break it. I think I completely disassembled when I soldered this thing in during remodel 10 yrs back, but can't recall for sure. Can this be completely disassembled and cleaned? Seems like I want to make sure manifold is not plugged/clogged, right?

    Other options, don't really want to tear into this, but daughter needs shower to work.

    Thanks for any help in advance.

    Mike
  2. LLigetfa

    LLigetfa DIYer, not in the trades

    Messages:
    3,827
    Location:
    NW Ontario, Canada
    Has the volume of water out of the tub spout changed since you "fixed" it? If you are now getting less water out of the spout, then there is a high probability that some crud got stirred up and is now affecting the pressure balance cartridge. The spout and the shower share the same supply and cartridge.
  3. Milanomike

    Milanomike New Member

    Messages:
    26
    Location:
    Ohio
    No, water pressure/volume to tub is fine before and after. It's the pressure to the shower that is considerably lower. Guess I could swap shower heads from the other bath to make sure it's not the shower head. Will report back.
  4. Milanomike

    Milanomike New Member

    Messages:
    26
    Location:
    Ohio
    Duh, just switched ancient shower head from other bath to the problem shower and guess what it seems fine! OK, off to buy a new shower head.
  5. LLigetfa

    LLigetfa DIYer, not in the trades

    Messages:
    3,827
    Location:
    NW Ontario, Canada
    Good luck. The environmentalists got rid of most of the good ones.
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