Grohe Non Rapido volume control rough-in valve is an integral part of a shower system that allows adjustment of the volume of water flow. This product is meant to be used in conjunction with a valve that controls water temperature.
You can download the installation instructions here.
To find out more information about Grohe products warranty terms and conditions please click here.
For more details, please see the technical sheet below;
SKU: 29273000 – 29274000