BRV Bonetti Rubinetterie Valduggia S.r.l.


Regolare e distribuire energia pulita


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

Product file

°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.

Product file

ModvFresh Basic

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

Product file

Mixing kit for ModvFresh Basic

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

Product file

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.

Product file

726 - Basic Series

Anti-scald thermostatic mixing valve for medium and small applications. Compact size. Available Kvs: 1.5, 1.8 and 3.4 (news from October 2019).

Product file


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

Product file

M2 MIX3 Energy G21 - DN25

2-Way pump unit with 3-way mixing valve with MID approved compact energy meter

The unit for 1” (180 mm) circulating pumps consists of:


  • Connection.
  • Mixing valve: 3-way.
  • High efficiency synchronous pre-wired circulating pump (for the models that include it).
  • 3-way flanged ball valve supplied with in-handle thermometer (coded red, range 0°C-120°C). The third way M10x1 allows the dip fitting and the lead sealing of a ø5x45 mm sensor.


  • Flanged ball valve with non return valve 20 mbar (which can be excluded by rotating the handle by 45°) supplied with in-handle thermometer (coded blue; 0°C-120°C).
  • Distance piece made in plastic 3/4”x110 mm (DN15) or 1”x130 mm (DN20) that has to be removed, after having cleaned the installation, to fit the energy meter.
  • “T” Connection for mixing valve.
  • Connection.

Energy meter G21, included into the packing, available in two versions:

  • DN15, Qn 1,5; 3/4”x110 mm; Kvs 3,0
  • DN20, Qn 2,5; 1”x130 mm; Kvs 5,0

Centre distance 125 mm. EPP insulation box (Measurements: 250x380x170 mm).

PN 10, max temperature 90°C (unit without pump).
External connections:  1” and 1"1/4 Female.

For power up to 39 kW (with Δt 20 K) and maximum flow 1700 l/h (*).
Kvs value: please look to the below table.
For an accurate measuring please refer to the curves shown in the technical section.
Available circulating pumps:
Wilo Yonos Para RS 25/6 (Y6)
Grundfos UPM3 Auto L 25-70 (U7)
Wilo Yonos Para RS 25/7,5 (Y8)
Available energy meters:
G21 - DN15 - Qn 1,5 (1.5)
G21 - DN20 - Qn 2,5 (2.5)

We suggest you to install two isolating valves Art. 552 (see Correlated Articles) before the pump unit to allow an easy service or replacement of the components of the unit.
The pump units ModvlvS Energy are made to meter the energy in centralized heating and cooling installations. The second temperature sensor is directly put into isolating valve of the supply way, without any adapter or pit. This special 3-way ball valve, placed after the circulating pump, allows the lead sealing of the sensor and also the replacement of it without draining the installation: it is enough to close the valve to isolate the sensor from the hydraulic circuit.
In this way the placement of the energy meter, after having cleaned and serviced the circuit or replaced it, is very easy.

Approximate data to select the appropriate meter

Model Energy
Δt Kvs of
the unit (*)
power and flow
of the installation
circulating pump
M2 G21 1,5 m3/h 20 K 2,8 18 kW  -  800 l/h Wilo Yonos Para RS 25/6 5,5 mH2O
M2 G21 2,5 m3/h 20 K 4,2 23 kW  -  1000 l/h Wilo Yonos Para RS 25/6 5,5 mH2O
M2 G21 2,5 m3/h 20 K 4,2 43 kW  -  1850 l/h Wilo Yonos Para RS 25/7,5 5,0 mH2O
M2 MIX3 G21 1,5 m3/h 20 K 2,8 18 kW  -  800 l/h Wilo Yonos Para RS 25/6 5,5 mH2O
M2 MIX3 G21 2,5 m3/h 20 K 3,8 23 kW  -  1000 l/h Wilo Yonos Para RS 25/6 5,0 mH2O
M2 MIX3 G21 2,5 m3/h 20 K 3,8 39 kW  -  1700 l/h Wilo Yonos Para RS 25/7,5 5,0 mH2O
(*) The indicated Kvs concerns the unit including the energy meter installed.

Measuring and check of a Energy DN25 system

  Clicking on the icon at side it is possible to download an Excel file dealing with the measuring and the check of a Energy DN25 pump unit; it is possible to select the model and the working parameters, so getting a check of the power and of the residual lifting power. In case of underfloor heating system the surface that can be managed is approximately calculated. Changing the starting data it is possible to simulate different employment situations and to make your considerations.

RUNNING OUT  Code DN15, connection 1": 203518-M3-1.5  -  with circ. pump: 203518-M3-(Y6/U7/Y8)-1.5
Code DN20, connection 1": 203518-M3-2.5  -  with circ. pump: 203518-M3-(Y6/U7/Y8)-2.5

RUNNING OUT  Code DN15, connection 1"1/4: 204518-M3-1.5  -  with circ. pump: 204518-M3-(Y6/U7/Y8)-1.5
Code DN20, connection 1"1/4: 204518-M3-2.5  -  with circ. pump: 204518-M3-(Y6/U7/Y8)-2.5

Note: The DN to which the identification codes of the units
are related to the nominal diameter of the energy counter.