Roman Tub Filler Deck Mount: Knob

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Moen produces a variety of Roman Tub rough-in valves. The handle assembly and interior handle mechanisms are not the same for each valve and they are not interchangeable. In order to service your Roman Tub, we recommend that you identify your handle assembly and handle mechanism. This article will walk your through the process.

Preparation: The water supply shut off valves must be turned off- see article How to Turn Off the Water Supply to the Faucet.

Step 1: Identify Handle Assembly

Flat Cap Prior To 2011

rt knob flat cap.png

Identifier: This style of knob will have a removable cap on top. Underneath will be a Phillips screw.

To Remove the Handle Assembly

Tool Required: Phillips Screwdriver

Process: Remove the screw, lift off the knob and proceed to Step 2.

Flat Cap After 2011

rt knob flat cap.png

Identifier: This style knob will have a removable cap on top with no screw underneath.

To Remove the Handle Assembly

Tool Required: Phillips Screwdriver

Process: Hold the clear plastic knob while rotating the metal base escutcheon counterclockwise and proceed to Step 2.

Threaded Cap

rt knob threaded cap.png

Identifier: This style knob has a threaded cap on the top of the handle.

To Remove the Handle Assembly

Tool Required: Phillips Screwdriver

Process: See article, Roman Tub Handle Knob: Threaded Cap

Threaded Hub

rt knob threaded hub.png

Identifier: This style knob does have a removal cap and visible screw, however this is not how this handle is removed. See Process.

To Remove the Handle Assembly

Tools Required: None

Process: Hold the cross knob while rotating the large round middle section counterclockwise and proceed to Step 2.

Step 2: Identify Handle Mechanism

Once your handle assembly has been removed, compare the visible parts to the images below to identify your handle mechanism. This information will be beneficial for choosing from the recommended articles below.

white nut.png

Handle Mechanism: White Adapter w/White Hex Nut-Service Kits: 13401/90274, 12343

Garden Tub 4902

Handle Mechanism: 13401, 90274

Cartridge: 14891, 1224

Roman Tub 6979 & 6980

Handle Mechanism: 12343

Cartridge: 1248

Handle Assembly: Top Cap

chrome nut.png

Handle Mechanism: White Adapter w/Chrome Nut -Service Kits: 13462,13463

Cartridge Replacement: 14891, 1248

Handle Assembly: Top Cap, Threaded Hub

installed add on.png

Handle Mechanism: (Introduced 2008) White Adapter w/White Cap- Service Kits: 143002, 140709, 106378

Cartridge Replacement: 1248

Handle Assembly: Top Cap, Threaded Hub

full splines with top view.png

Handle Mechanism: Splined Stem Extension-Service Kits: 101956, 106378, 140709, 161758

Cartridge Replacement: 1248

Handle Assembly: Threaded Hub, Hex Screw

partial splines with top view.png

Handle Mechanism: Splined Stem Extension (Long Valve)-Service Kits: 182500

Cartridge Replacement: 1258

Handle Assembly: Threaded Hub, Hex Screw

partial splines short with top view.png

Handle Mechanism: Splined Stem Extension (Short Valve)-Service Kits: 174290

Cartridge Replacement: 1258

Handle Assembly: Threaded Hub, Hex Screw