Welcome! Here are the website rules, as well as some tips for using this forum.
Need to contact us? Visit https://heatinghelp.com/contact-us/.
Click here to Find a Contractor in your area.

Lawler 805 Thermostatic Mixing Valve

Options
BillMcBee
BillMcBee Member Posts: 1
in THE MAIN WALL
I have started to get a high pitched whine coming from the mixing valve. It is operating properly for now. Could the springs be going bad and allowing water to bleed through causing the whine? If not should I just rebuild the whole valve? Any thoughts or comments are welcome. Thanks

Comments

  • hot_rod
    hot_rod Member Posts: 22,158
    Options
    Has anything else changed in the piping, a pump replacement for example? If not it may need a de-lime cleaning.
    Bob "hot rod" Rohr
    trainer for Caleffi NA
    Living the hydronic dream
    BillMcBee
  • Intplm.
    Intplm. Member Posts: 1,967
    Options
    Have you lost a pipe support or pipe hanger ? Or, has one been added ?
    BillMcBee
  • hot_rod
    hot_rod Member Posts: 22,158
    Options
    keep in mind, thermostatic and bimetal mixers are fairly low Cv valves, high gpm flows can cause noise sometimes.
    Bob "hot rod" Rohr
    trainer for Caleffi NA
    Living the hydronic dream
    BillMcBee

Categories