PIETRO FIORENTINI FE Series - Safety Devices; Slam-Shut Valve for Maximum Downstream Pressure

35
SERIES FE
LOW-PRESSURE GAS REGULATOR | DESCRIPTION AND OPERATION | REV. 00
EN
Use, maintenance and warning manual
4.6 - SAFETY DEVICES
To prevent the safety devices from tripping during normal service (when there are no faults at user level):
• do not exceed the maximum capacity values of the gearbox;
• do not feed the gearbox with pressures lower than the minimum values specied;
• do not purge of the downstream line with the gearbox installed.
4.6.1 - SLAM-SHUT VALVE FOR MAXIMUM DOWNSTREAM PRESSURE
NOTE!
If the valve trips, service will be interrupted.
The slam-shut valve for maximum downstream pressure (A) is a safety device that remains open in normal service
conditions and automatically and completely closes the gas ow when the maximum downstream pressure exceeds the
calibration values.
A
Fig. 4.3. Slam-shut valve for maximum pressure