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Why can't I get any hot water out of my valve, only lukewarm?
Last Updated: 03/25/2010
All Symmons pressure-balancing shower valves come equipped with a handle limit stop to set the handle rotation. If you are not having a problem with hot water elsewhere in the house, it is possible that the limit stop feature has been set too low, or the incoming supply temperatures have changed requiring an adjustment of the limit stop. It is not necessary to turn off the water to set or adjust the handle limit stop. CAUTION: Never remove this screw without turning off the hot and cold water supply.

  1. To set the shower valve handle limit stop, remove the screw holding on the handle and remove the handle.
  2. Remove the round dome cover by turning in a counter-clockwise direction. At this point you will see a small slotted screw head that is visible in the valve cap.
  3. Place the handle back on the valve stem (loose) and open the valve turning the handle until the maximum desired position is reached. This may require turning the limit stop screw (T-34) counter-clockwise (see CAUTION above). To most accurately and safely verify the temperature of the hot water, place a thermometer in a tumbler of water filled from tub outlet.
  4. Shut off valve and re-attach dome and handle.
If following the above procedure has not rectified the problem then there is substantial wear within the valve, and the spindle assembly (TA-10) needs to be replaced. Under certain circumstances you may need to replace the TA-4 also.

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