Kitchen faucet comes loose at base

Discussion in 'Plumbing Forum, Professional & DIY Advice, Tips & ' started by jechow, Mar 12, 2011.

  1. jechow

    jechow New Member

    Messages:
    22
    Location:
    British Columbia
    I have a Pfister single handle faucet in the kitchen. The faucet goes into the hole in the sink and then it is tightened by a nut and then two screws holds the nut in place. What I have found is that over time the faucet comes loose at the base and I have to go under the sink to retighten the nut. There must be away to do this right so that it does not come loose?

    Thanks
    Last edited by a moderator: Mar 24, 2011
  2. jadnashua

    jadnashua Retired Defense Industry Engineer xxx

    Messages:
    21,801
    Location:
    New England
    For the nut to loosen, it would seem that the screws must have as well. If that is the case, you could get yourself a small bottle/tube of blue thread-lock compound. I suggest the blue verses the red since the blue is not 'permanent'. Once you apply the red stuff and it sets, it is a bear to ever remove. The blue stuff stays slightly rubbery and while it holds, you can still remove the screw when the time comes. Seems like a poor design.
  3. hj

    hj Moderator & Master Plumber Staff Member

    Messages:
    26,230
    Location:
    Cave Creek, Arizona
    There should be a large washer against the bottom of the sink and the two screws in the "nut" push against it. IF the screws are pressing directly against the bottom of the sink it is probably too rough for them to engage it properly.
  4. jechow

    jechow New Member

    Messages:
    22
    Location:
    British Columbia
    Yes, this is exactly the setup. There is a large washer at the botoom of the sink and there is a nut with two threaded holes for two screws to push up against the washer. I don't know why this simple design does not work. I would like to avoid the use of a compound but if this the way the pros are installing these types of faucets then I guess I will too. What do yo recommend?
  5. hj

    hj Moderator & Master Plumber Staff Member

    Messages:
    26,230
    Location:
    Cave Creek, Arizona
    All I have ever had to do was tighten those two screws very TIGHT and they stay that way.
  6. LLigetfa

    LLigetfa DIYer, not in the trades

    Messages:
    3,826
    Location:
    NW Ontario, Canada
    I don't think locktite on the two set screws will do anything. My guess is it's not the set screws coming loose but rather the big nut. There is likely to be too much wiggle going on perhaps because the swivel action is too stiff. Try to smooth out the swivel action and bush out the hole if it is oversize to minimize the potential for wiggle.
  7. jadnashua

    jadnashua Retired Defense Industry Engineer xxx

    Messages:
    21,801
    Location:
    New England
    For a screw to hold, it needs tension on it such that it is actually slightly stretching; or, you can use an add-on material to prevent it from turning - the thread-lock compound. Same idea as torquing your lug bolts on the car...when properly done, you are actually stretching the bolts like a spring slightly, and it has some give so it will stay tight. Too tight, and you distort it beyond the spring stage, too loose, and it can work its way loose. First, you need to get the nut quite tight, and that may be your major issue. Then, to keep it there, you need the screws tight. One without the other won't work. The thread lock compound (if you use blue), just means you'd need the screwdriver to back it out all or most of the way - sort of like a nylon insert on a locking nut, but it will still unscrew when the time comes (or tighten up, if you wish).
  8. Jerome2877

    Jerome2877 In the Trades

    Messages:
    397
    Location:
    BC
    If the counter is rotten from a leaking faucet or sink, this can cause your problem. Tightening will temperarily fix it but it will happen again.
  9. PlumbPowerHouse

    PlumbPowerHouse Plumber

    Messages:
    37
    Location:
    South Carolina
    Can't say I've had a problem like that. Usually when I tighten the mess out of the screws, they stay tight.
  10. Price Pfister

    Price Pfister Pfister Faucets

    Messages:
    28
    Location:
    Lake Forest, California
    Hi JeChow

    We're sorry to hear about the problem you’re experiencing with Pfister kitchen faucet. We want to address this issue quickly, but our Consumer Service Team needs some additional information to proceed.

    Please provide:

    * The model number of the product. If you do not know this, please follow these directions: http://www.pfisterfaucets.com/do_it_yourself/how_to.aspx
    * Any other specifics on the issue you’re experiencing
    * A method to contact you (ex. email, phone, etc.)
    * Best time for contact (ex. mornings, evenings, etc.)

    Please send this information to us at pfistersocial@bdhhi.com.

    We apologize for your inconvenience and look forward to resolving this matter as soon as possible.

    Sincerely,

    The Pfister Team

    Pfister is a part of the Stanley Black & Decker Hardware and Home Improvement (BDHHI) Group.
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