BRV Bonetti Rubinetterie Valduggia S.r.l.


Regolare e distribuire energia pulita

ModvFresh Basic

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

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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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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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°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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M2 FIX3 Energy - DN20

2-way pump unit with fixed temperature mixing valve made for the fitting of an energy meter

The unit for 1/2” (130 mm) circulating pumps consists of:


  • Connection.
  • Thermostatic mixing valve with temperature setting range, models F1 and F2.
  • Synchronous pre-wired circulating pump with cable 2 m. long (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.

Centre distance 90 mm. EPP insulation box (Measurements: 180x302x142 mm).
PN 10, max temperature 90°C.
Connections: 3/4” Male with swivel tang to the heat source or to the distributor. 3/4” Female to the user.

For power up to 22 kW (with Δt 20 K) and maximum flow 1000 l/h (*).
Kvs Value: 2,0 (*).
Approximate data calculated with a 6 m nominal lifting power circulating pump.
For an accurate measuring or for higher flows, please refer to the diagram.
(*) The data are relevant to the pump unit without energy meter installed.
Thermostatic valves:
Range 20-45°C (F1)
Range 45-70°C (F2)
Circulating pumps:
Wilo Yonos Para RS 15/6 RKC (C6)
Grundfos UPM3 AUTO L 15-70 (UL7)
Wilo Yonos Para RS 15/7,5 RKC (C8)

Fitting up energy meters:

DN15 - 3/4” x 110 - Qn 1,5 (15)
DN20 - 1” x 130 - Qn 2,5 (20)

We suggest you to install two isolating valves Art. 552 3/4” (see "Distributor" section) before the pump unit to allow an easy service or replacement of the components of the unit.

Typical curves of the pump unit and of the circulating pumps

Click to zoom

Measuring and check of a DN20 system

  Clicking on the icon at side it is possible to download an Excel file dealing with the measuring and the check of a system consisting of one distributor and of up to three DN20 pump units. It is possible to select the model and the working parameters for each pump unit, so getting a check of the powers of the system and the residual lifting power for each way. In case of underfloor heating loops the maximum surface manageable is also estimated. Changing the starting data it is possible to simulate different employment situations and to make your considerations.

The pump units ModvlvS Energy are made to meter the energy in centralized heating and cooling installations. These pump units, thanks to two isolating valves on the return way, allow an easy mounting of the energy meter. 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.

RUNNING OUT  Code DN15: 202518-(F1/F2)-15  -  with circ. pump: 202518-(F1/F2)-(C6/UL7/C8)-15
Code DN20: 202518-(F1/F2)-20  -  with circ. pump: 202518-(F1/F2)-(C6/UL7/C8)-20

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