BRV Bonetti Rubinetterie Valduggia S.r.l.


Regolare e distribuire energia pulita


Modular multi-zone distribution box for wall-mounted gas boilers or heat pumps. Three types of available pump units: direct, mixed motorized, mixed fixed point.

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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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ModvFresh Basic

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

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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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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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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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Technical part

Technical part: DN25 Distributors

Distribution headers for heating installations made in electro-welded and painted iron pipe suitable for power up to 70 kW.

EPS 25 mm thermic insulation according to DIN 4102-B2 and galvanized steel
cover 0,55 mm thickness. Hydraulic test at 12 bar.
ModvlvS: connection center distance 125 mm. The range of the distributors is suitable for 1” ModvlvS pump units and DN32 1”1/4; for the latters you must use the special adapters.


Different pump units can be connected to a distributor,depending on the kind of the installation (f.i. underfloor heating system, radiator heating system, etc.) each pump unit for each branch of the installation; therefore the dynamics of the fluid that is flowing through the distributor is strongly influenced by the models of the pump units used, each of them with its flow and its working temperature.
Headlosses. For the above reasons the headlosses of a distributor are quantifiable in a difficult way. The diagrams show approximately the headlosses of the range of distributors HV 60 and HV 70 (draw. 1) and of the hydraulic switcher HW 60 (draw. 2).

Draw. 1: HV60 and HV70 distributors headlosses
Click to enlarge
MAX: the straight line shows the conditon of maximum headloss of each pump unit, corresponding to the the estreme working conditions of the distributor.

MIN: the straight line shows the conditon of minimum headloss of each pump unit, corresponding to the average working conditions of the distributor.

The surface between the two curves shows approximately the range of the headlosses in the different working conditions.
Draw. 2: HW60 hydraulic
switcher headlosses
Click to enlarge

Thanks to the hydraulic switcher the flows on the primary and on the secondary circuit are not necessarily the same. Please refer to the flows of the following table:

Model of
Model of
hydraulic switcher
Flow of the primary circuit
reccomended / maximum
Total maximum flow
of the secondary circuit
HV 60/125 (1”) HW 60/125-04 (1”) 2000 l/h    /    4000 l/h 4000 l/h
HV 70/125 (1”1/4) HW 60/125-05 (1”1/4) 3000 l/h    /    5000 l/h 5000 l/h