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Roman Tub Handle Knob: Flat Cap (Prior to 2011)

There are multiple styles of handle assemblies used on Roman Tub faucets. Determining which one you are working with will require removing the handle and identifying your handle mechanism. If these requirements have not yet been confirmed, see Roman Tub Deck Mount: Lever or Roman Tub Deck Mount: Knob for details at


Confirm knob style: 

Gently pry the cap out of the knob. If you don't see a Phillips screw see article titled: Roman Tub Handle Knob: Flat Cap (After 2011)


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  1. Using a Phillips screwdriver, unthread and remove the Phillips screw (#1).
  2. Lift the knob handle (#3) off.

Cartridge Replacement:


  1. To assemble the knob handles (#3) in the off position, rotate the stem extensions (#4) all the way clockwise for the hot side, or counter-clockwise for the cold side.
  2. Set the knob (#3) on top of the stem extension (#4).
  3. Tighten the Phillips screw (#2).
  4. Push the cap (#1) back in the top of the knob handle (#3).

For additional information on Roman Tub Fillers visit Roman Tub Deck Mount: Lever or Roman Tub Deck Mount: Knob. For information on other Moen products visit and select the type of product you are repairing. The guide will contain repair details, troubleshooting and specific information on assembling handles associated with that style of product.

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