Installing the safety valve

Let's talk about the safety valve and its use for protecting heating systems from overpressure, which can damage the components and above all create a hazard to persons. 
The safety valve only intervenes when the pressure in the system generates a force greater than the one created from the setting spring, this leads to a discharge of the flowing fluid in order to bring the system back to a safe condition. 
The field of application is that of systems with power generators up to 35 KW and may only be used if made, as is the case of the GNALI BOCIA safety valve, in accordance with the "Collection R" requirements for safety rules for pressure apparatuses. 
They are used to protect storage tanks. The mounting can be in a vertical or horizontal position, but never in an inverted position in order to avoid the accumulation of impurities that could damage the sealing disc over time. There must be no shut-off valves between the safety valve and the device to be protected.  
Once the device becomes operational, it does not close until the pressure has dropped to a value at least 20% lower than that of calibration. 
If a drain pipe is required, it must be specified that this must not in any way prevent the correct operation of the valve and must have a diameter at least equal to that of the outlet connection.
 

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