Grohe 47921000 Handle

Summary

GROHE 47921000 Grohtherm 2000 Concealed Bath Shower Flow and Diverter Handle Chrome

GROHE 47921000 is a chrome shut-off and diverter control handle for Grohtherm 2000 NEW concealed bath and shower controls. It is the upper operating handle in the two-control arrangement, rather than the separate lower temperature-control handle.

The handle operates the AquaDimmer mechanism to turn the water on or off and select between two outlets. In the bath/shower arrangement, the central position is closed, clockwise operation selects the spout, and anticlockwise operation selects the shower. The handle is an external control component, not the internal flow cartridge or thermostatic cartridge.

Technical Details

Confirmed Models

• GROHE 19355001 Grohtherm 2000 Thermostat with Integrated 2-Way Diverter
• GROHE 19964000 Grohtherm 2000 Thermostat with Integrated 2-Way Diverter, UK version

Concealed-Body Context

These finishing controls are associated with the following Rapido T body arrangements. Identify the finishing-set model before ordering, as a concealed-body code alone does not determine which external handle is required.

• GROHE 35500000 Rapido T Concealed Thermostatic Mixer Components
• GROHE 35050000 Rapido T Concealed Thermostatic Mixer Components

Before Ordering

Confirm the exact finishing-set reference and that the upper flow/diverter handle is the part required. Compare the rear connection, fixing arrangement and existing cover cap. Other Grohtherm 2000 versions can use different controls, so appearance or the range name alone is not sufficient to identify this handle.

Related Spares You May Need

The following are separate service parts for the relevant control or concealed-body arrangement, not a list of items supplied with this handle. Select the part that matches the installed assembly; the adapter versions, partial waterway sets and thermostatic cartridges are not interchangeable simply because they appear below.

• GROHE 47920000 Temperature Control Handle, separate lower control for the 19355001 arrangement; do not assume the same temperature handle is used on the UK 19964000 version
• GROHE 47364000 AquaDimmer Flow Cartridge, internal cartridge responsible for shut-off and outlet selection
• GROHE 12701000 AquaDimmer Adapter, adapter for the 19355001 AquaDimmer arrangement; match the installed version
• GROHE 12701001 AquaDimmer Rocket Waterway Attachments, service assembly for installations using this waterway version
• GROHE 12701001X AquaDimmer Waterway Attachments, attachment components only, with the rocket waterway excluded
• GROHE 12701001R AquaDimmer Metal Attachment, metal attachment only, not the complete waterway assembly
• GROHE 49347000 AquaDimmer Cartridge and Adapter Assembly, combined service option instead of purchasing the 47364000 cartridge and the matching adapter separately
• GROHE 0305600M AquaDimmer Cartridge O-Ring, separate cartridge sealing ring
• GROHE 47483000 Thermostatic Cartridge, separate temperature-control component for the 35500000 concealed-body arrangement
• GROHE 47950000 Thermostatic Cartridge, temperature-control component for the 35050000 TMV2 valve arrangement
• GROHE 47765000 Retaining Ring, retaining component for the thermostatic cartridge assembly
• GROHE 47753000 Non-Return Valve, check-valve component within the concealed mixer body
• GROHE 47186000 Reverse Thermostatic Cartridge, only for installations requiring the specified reversed hot and cold supply arrangement
• GROHE 19332000 34mm Hex Socket Box Spanner, service tool for the specified valve fittings; 34mm is the tool size, not a handle dimension
• TACSIL 3g Cartridge Silicone Grease, for lubricating appropriate cartridge seals during servicing
• GROHE 29007000 Safety Combination for Rapido T, optional concealed-body safety assembly, only where specified for the installation

Fitting Notes

Isolate the hot and cold water supplies before dismantling the controls. Follow the installation sequence for the exact finishing set, keeping the stop-ring marking uppermost and the keyed splined adapter correctly positioned. Fit the flow handle with its button uppermost, secure the fixing and refit the cover cap. Check the closed position and operation of both outlets after reassembly.

Troubleshooting

Symptom: Water continues to drip from the shower head or spout when switched off. Likely Cause: A fault within the AquaDimmer flow-control or waterway assembly. Solution: Check the cartridge, adapter and seals before ordering; replacing the external handle alone does not renew these internal components.

For help identifying the correct control, contact us with the model reference and photographs of the installed controls and the rear of the removed handle.