BRV Bonetti Rubinetterie Valduggia S.r.l.


Regolare e distribuire energia pulita

°Caleon Thermostat - Wi-Fi

Elegant chrono-thermostat with TFT capacitive touch panel. Wi-Fi N 2.4 Ghz connection for remote control by °Caleon app.

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ModvFresh Basic

Compact heat exchange unit to deliver fresh domestic hot water (DHW).

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Full bore 2-way zone ball valve, with bidirectional actuator with quick connection. Dimensions from 1/2" DN15 to 1"1/4 DN32.

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DomvS Clima

Control unit for manifolds of heating and cooling radiant panels up to 200 m2. Fixed point thermostatic mixer or motorized rotary mixing valve. LCD room control unit.

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Mixing kit for ModvFresh Basic

35÷60°C thermostatic mixing kit designed for ModvFresh Basic, with anti-scald thermostatic mixing valve for small applications.

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Multifunctional compact hydraulic module for the management of a direct circuit, a mixed circuit and the production of domestic hot water (DHW)

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726 - Basic Series

Anti-scald thermostatic mixing valve for medium and small applications. Compact size. Available Kvs: 1.5, 1.8 and 3.4.

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Solar Kit 2

Solar-boiler thermostatic connection kit with adjustable diverting temperature
The kit, fully assembled and tested, consists of:

  • Thermostatic diverting valve 1” Male with adjustable diverting temperature from 38°C up to 54°C, by  means of a graduated  knob - Kvs 3,5.
  • Solar check valve and filter built in the connection pipe to the solar storage tank.
  • T-shaped swivel connection to the boiler with storage tank.
  • Anti scald thermostatic mixing valve 1” Male - Kvs 2,5. Control of the user temperature adjustable by means of a knob from 35°C up to 60°C.
  • Solar check valve and filter built in the connection pipe to the cold water.
Centre Distance 163 mm (95mm bolier).
EPP insulation box (Measurements: 255x125x100 mm).
T-shaped central connection with adjustable angular position of the connections.
In some positions I’ll be necessary to remove the insulation box.

Maximum static pressure 10 bar (PN 10); dynamic 5 bar.
Maximum ratio between the pressures 2:1.
Inlet maximum temperature: constant temperature 100°C;
(short time temperature: 120°C for 20 s).
Diverting valve temperature setting field: 38°÷54°.
Commutating field 4K (between 42 and 52°C).
Users temperature setting field: 35÷60°C. Accuracy ±1°C.

External connections:  3/4” Male (swivel connection).

In compliance to
the Italian Ministerial
Decree N°174/2004

PED 2014/68/EU 4.3
Avalilable Kvs:
1.7 = Middle water consumption;
max. 49 l/min (3 bar)
Diverting temperature:
Adjustable from 38°C up to 54°C
Scheme of a thermal solar system, gravity or forced circulation

NB: This schema is just as an indication
Forced circulation solar collector
ModvSol solar station
Solar water tank
Gravity solar collector with storage tank

Wall boiler, or standing boiler with built-in storage tank
Solar Kit 2
Control thermometer


The adjustable solar kit for boiler allows to manage automatically and to exploit at its best the thermal energy delivered by a thermal solar system and to supply hot domestic water for end user, at a controlled temperature. The adjustable diverting valve allows to maximize the exploitation because the diverting temperaure can be fitted on the installation features, on its geographic location and on users practice.
It also possible to change the diverting temperature in accordance with the seasons of the year: lower temperature in summer time ot higher tempeature in winter time.

The kit, supplied in a suitable and smart EPP insulating box, works in two ways:
  • In case temperature of water coming from solar storage tank, either a gravity or a forced loop with glycol, is high enough, for example in summer, the first device of the kit, the adjustable thermostatic diverting valve, at the selected temperture, diverts the fluid towards the thermostatic mixing valve, so avoiding  ineffective boiler startings (scheme 1). Then the mixing valve mixes the fluid with cold water from mains, up to presetted temperature.
  • Whereas, as it happens in winter, temperature of water in solar water tank is low (lower then the selected temperature) the first valve diverts in a proportinal way the pre heated fluid towards the boiler storage tank, so exploiting to  the maximum its energy and reducing to the minimum the boiler working time (scheme 2). The anti-scald thermostatic mixing valve, placed at the outlet of the kit, always controls and restricts the water temperature to the users.
The anti-scald function automatically stops the hot water flow in case of failure in the cold water line.

Scheme 1: working conditions at a diverting temperature of 42°C (summer time setting) Scheme 2: working conditions at a diverting temperature of 48°C (winter time setting)

Adjustable thermostatic diverting valve; outlet towards the gate 1 if the temperature is lower than the selected temperature; outlet towards the gate 2 if it is higher than the selected value.

  Solar check valve
it is built-in in the 3/4” male fitting
Anti scald thermostatic mixing valve, adjustable from 35°C to 60°C;
H inlet hot water from the brass fitting;
C inlet cold water from mains;
MIX exit mixed hot water towards end user.
it is built-in in the 3/4” male fitting

DANGER OF SCALDS: djustment temperatures of the thermostatic mixing valve more than 55°C can cause scalds in short time, particularly to the kids. In this case we recommend to install the security anti-scald device Art. 790 before the outlets considered dangerous (showers etc.).

Most popular solar hydraulic schemes
Natural circulation (gravity)
Forced circulation (glycol / closed circuit)
Forced circulation (glycol / closed circuit) and boiler integration
Code 3/4” Kvs 1,7: 103736-1.7