BRV Bonetti Rubinetterie Valduggia S.r.l.


Regolare e distribuire energia pulita


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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°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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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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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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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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ModvFresh Basic

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

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Non return valve for 4-way mixing valve and for return ball valves
Non return valve to be installed into the body of the 4-way mixing valve on the return way. It prevents back flow of energy in presence of complex installations (f.i. differents circulating pumps and/or several mixing valves on the distributor). The check valve can also be be used for return flanged ball valves sold as individual components.

Minimum opening pressure: 20 mbar.
Kvs 8,8.
Max Temperature 110°C.
Unwanted circulation into a heating installation

Into a heating installation equipped with pump units mounted on a distributor, sometimes an “unwanted circulation“, pointed out in orange colour in the illustration, could start. In the above shown example, the circulating pump of the direct pump unit (P2) produces this circulation into the mixed circuit (Circuit 1), that, as a consequence, warms up. This happens owing to different elements: the kind of mixing valve of the Circuit 1, the position of it (open, closed or mixing) and the possibility that the circulating pump P1 is stopped.

To avoid the unwanted circulation it is necessary to put in the indicated position (2) an additional check valve, specific for the model of installed pump unit.

Approximate schem with the representation
of a DN25 4-way mixing valve

Held in seat check valve
Attention: in the DN25 Pump Units, once the check valve is installed it is impossible to remove it witout broken it
Check valve fitted as standard in the pump unit.
Additional check valve.
Code: 10101