BRV Bonetti Rubinetterie Valduggia S.r.l.


Regolare e distribuire energia pulita

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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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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ModvFresh Basic

Compact heat exchange unit to deliver fresh 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 (news from October 2019).

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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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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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M2 FIX3 - DN20

2-way pump unit with fixed temperature mixing valve

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).
  • Flanged ball valve supplied with in-handle thermometer
    (coded red, range 0°C-120°C).


  • 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).
  • “T” Connection for mixing valve.
  • Connection.

Centre distance 90 mm. EPP insulation box (Measurements: 180x302x142 mm).
PN 10, max temperature 110°C (unit without pump).
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.
Available thermostatic mixing valves:
Setting range
20-45°C (F1)
Setting range 45-70°C (F2)
Circulating pumps:
Wilo Yonos Para RS 15/6 RKC (C6)
Wilo Yonos Para RS 15/7,5 RKC (C8)
Grundfos UPM3 AUTO L 15-70 (UL7)

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.
Approximate data for underfloor heating and radiators heating systems
Model Field of
Kvs Approximate power and flow
of the installation

circulating pump
lifting power
Approximate surface
of the underfloor
heating system
20-45 °C 8 K 2,0 4,5 kW - 500 l/h Wilo Yonos Para RS 15/6 5 mH2O Up to 50 m2
F2 45-70 °C 20 K 2,0 11 kW - 500 l/h Wilo Yonos Para RS 15/6 5 mH2O -
20-45 °C 8 K 2,0 9 kW - 1000 l/h Wilo Yonos Para RS 15/7,5 5 mH2O From 50 m2
up to 100 m2
F2 45-70 °C 20 K 2,0 22 kW - 1000 l/h Wilo Yonos Para RS 15/7,5 5 mH2O -
Reference temperatures:  Models F1: Th: 55°C ; Tc: 24°C ; Tmix: 32°C;   Models F2: Th: 75°C ; Tc: 40°C ; Tmix: 55°C
Thanks to the new MultiMix thermostatic mixer the pump unit can give the maximum supply temperature, the same as the one of the inlet hot water. If lower temperatures are requested, to allow a regular and continuous mixing, it is necessary that the inlet hot water temperature is 3÷5 K higher than the requested value of the outlet mixed temperature.

Typical curves of the pump unit and of the circulating pumps

Click to zoom

Optional: safety
bimetallic thermostat.
(see section “Servomotors and Room Thermostats")

Ordered in the group by adding “-T” in the code.
f.i.: 20255R-F1-C6-T

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.

Code: 20255R-(F1/F2) - with circ. pump: 20255R-(F1/F2)-(C6/C8/UL7)

Standard version: right supply.
Left supply version available with extra price: see price list.