22mm Concealed Shower Thermostat with Diverter, 2 or 3 Outlets

22mm concealed shower thermostat, with diverter, 2 or 3 outlets – Treemme – concealed stainless steel shower thermostat with integrated diverter, on a vertical plate: thermostatic handle and diverter button, both cylindrical and knurled.

The 22mm collection, designed by Marco Fagioli, Emanuel Gargano and Giampiero Castagnoli, is based on a 22 mm diameter stainless steel tube: curved pipes with clean lines and cylindrical knurled handles, with a fine texture that provides a secure grip even with wet hands. It is made entirely from satin-finished AISI 316L stainless steel or PVD colours.

What you receive: the external part (plate, handle and button), in the model and finish of your choice; the concealed body only if you choose the complete set.

External part or complete set?

This product is wall-mounted and has two parts:

• external part – the visible part: handle, plate or rosettes, pipe, in the finish of your choice;
• concealed body (code RWIT 8A46 ZZ 20) – the part that is built into the wall by the plumber. It is not visible and is the same for all finishes.

Without the concealed body, the product cannot be installed. From the Set menu, choose:

• External part only – if you already have a Treemme concealed body installed in the wall (for example, if you are replacing a tap or the plumber has already installed it);
• Complete set with concealed body – for a new installation: you will receive everything you need.

Finishes

Satin stainless steel or one of the three PVD colours: gun metal, bronze and gold. PVD finishes are applied in a vacuum and are highly resistant to scratches and limescale.

Technical specifications

• External part codes: RWIT 8A46 .. 16 (2 outlets), RWIT 8A72 .. 16 (3 outlets)
• Concealed body code: RWIT 8A46 ZZ 20
• Flow rate: 21 l/min
• Installation: concealed
• Collection: 22mm – designed by Marco Fagioli, Emanuel Gargano and Giampiero Castagnoli
• Material: AISI 316L stainless steel, satin-finished or with a PVD finish
• Manufacturer: Treemme Rubinetterie, Asciano (Siena) – Made in Italy

Complete dimensions are shown in the technical drawing in the image gallery.

Frequently asked questions

What does the thermostat do?

It maintains the set water temperature, even if the water pressure or temperature in the mains changes, for a comfortable and safe shower.

What do 2 or 3 outlets mean?

The diverter directs the water to each outlet in turn: for example, the shower head and hand shower (2 outlets) or the shower head, hand shower and side jets or bath spout (3 outlets). Choose the number of outlets from the menu.

What do the knurled handles mean?

The 22mm cylindrical handles have a fine texture engraved into the steel, which makes them pleasant to touch and easy to turn even with wet or soapy hands.

Why stainless steel?

AISI 316L stainless steel is the same steel used in the food and shipbuilding industries: it does not rust, does not release metals into the water and is resistant to limescale and cleaning products. PVD finishes are applied in a vacuum and are highly resistant to scratches.

Do I need the concealed body?

Yes, it is mandatory for a new installation. Choose “Complete set with concealed body”. The “External part only” option is only for those who already have a Treemme concealed body installed in the wall.

How is it installed?

Installation is carried out by a plumber. For concealed models, the body is built into the wall before tiling, and the external part is fitted at the end.

How long does delivery take?

Delivery to your country takes 0–6 weeks, depending on the finish.

For projects, technical sheets or help choosing a finish, the IdeaCasa team is at your disposal – free consultation.

Import duties and taxes are paid by the customer on delivery.