The tub spout you have with the knob on the end of it is a shower diverter. The knob diverts water away from the tub spout and up to the shower head. In your case, the diverter needs to be replaced.

The tub spout you have with the knob on the end of it is a shower diverter. The knob diverts water away from the tub spout and up to the showerhead. In your case, the diverter needs to be replaced.

including digital thermostat unit Digital Controller - intuitive multifunctional operating unit - wireless technology - temperature and flow control (temperature adjustable up to max. 46° C) - ...

GROHE SafeStop safety button at 38°C (calibration required) GROHE SafeStop Plus optional temperature limiter at 43°C or 46°C included GROHE AquaDimmer, integrated shut off/diverter valve knobs with ...

If you want a little more control over your showering experience, a thermostatic (TS) valve may be a better choice. TS valve shower systems, like the Iriber 12 Inch Rainfall Shower Head, keep the ...