The operation of shut-off valves exploits the monitoring of fluid temperature inside a boiler, a direct method to ascertain its operational state. An excessive temperature, in fact, may be the symptom of a problem and thus of potential damages to the boiler itself.
By using shut-off valves, it is possible to cut the fuel supply and thus remove the cause of the problem and the potential danger. The advantage of using this device is that, unlike the dump valve, it does not discharge fluid from the pump line, meaning that, from the moment in which the dangerous situation is resolved, the plant might be restarted.
Shut-off valves are positive-action devices with manual reset; in the event, therefore, of any anomalous circumstance, including damage to the valve sensor, the device blocks the flow of fuel.
Shut-off valves, too, as the other items in the Gnali Bocia catalogue, are realized in brass, starting from a forged body ensuring their resistance and compactness, and accordingly their reliability and endurance.
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