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april 2011

Anti-sticking junctions for the safety valve

Installation of a safety valve inside the plant in order to ensure its integrity

The pressure limitation on those plants where elevated temperatures might be reached is of fundamental importance for safeguarding the integrity of both the persons and the plant itself. To that end, a safety valve enabling the excess pressure to be discharged is usually inserted at a point that lies immediately downstream of the generator’s output.
Calibrated in a laboratory, the safety valve guarantees its intervention when it is subjected to too high a stimulation, by discharging part of the fluid contained in the plant and bringing it back to a safe condition. The fluid discharged by this action will then be reinstated into the pipes, a task usually entrusted to a filling device.
One of the peculiarities of every safety valve produced by GNALI BOCIA is to guarantee the restraint, i.e. its action is only carried out in the event of a marked excess over the calibration process, thereby avoiding the continuous drip system of the plant.
In order to ensure a constant operation over time, the sealing junction of the safety valve is realized in a special synthetic rubber capable of avoiding pasting, being a phenomenon which might dangerously shift the calibration point upwards.
Within the range of these items, there are also models with a manual control lever for draining the plant, being an operation demanded in special cases.


See also
14/02/2015 Safety valves are necessary for your own protection Protect your system against damages by using a safety valve to be applied to the output of your generator.

14/09/2016 Safety valve for boiler approved in accordance with the PED directive Safety valve for boiler made in brass on numerical control machines at the Lumezzane plants

14/03/2016 In the event of an emergency, the shut-off valve comes into operation Shut-off valves and security valves prevent damages to the thermic system.

14/05/2021 Safety valve and assembly onto the water heater The safety and check valve must be fitted onto the water heater inlet for it to operate correctly

14/05/2014 Interception valves and I.S.P.E.S.L. standards The interception valve requirements are defined in the ISPESL standards

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