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    Pressure Independent Control Balancing Valve: SD 9777/9776

    SD 9777 balancing valve is designed for the automatic balancing of heating and cooling systems, regardless of fluctuating pressure conditions of the system.

    Thanks to its unique design, SD 9777 balancing valve is able to perform three functions:

    • REGULATION
      Selection of required flow rate;
    • CONTROL
      Constant flow rate indipendent of pressure fluctuations;
    • MODULATION
      “Full authority” flow rate modulation.

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    SD 9777 balancing valve is designed for the automatic balancing of heating and cooling systems, regardless of fluctuating pressure conditions of the system.

    Thanks to its unique design, SD 9777 balancing valve is able to perform three functions:

    • REGULATION
      Selection of required flow rate;
    • CONTROL
      Constant flow rate indipendent of pressure fluctuations;
    • MODULATION
      “Full authority” flow rate modulation.

    Features

    The main features of SD 9777 are the following:

    • Easy required flow rate selection using presetting dial;
    • Automatic balancing in the event of fluctuating pressure conditions in system branches;
    • Full modulation regardless of the presetting (flow rate setting)
    • Flexibility if the system is modified after the first installation;
    • Reduction of balancing costs, improved energy saving and high environmental comfort;
    • Easy flushing procedure thanks to quick and simple removal of differential pressure control cartridge placed inside valve body;
    • Reduced installation dimensions thanks to compact valve construction, which does not require inlet and outlet straight pipelines to stabilize the flow.