Excess Flow Lock-Up Device - PIETRO FIORENTINI FE Series Manual

4.6.2 - EXCESS FLOW LOCK-UP DEVICE

NOTE!
If the device trips, service will be interrupted.
The excess flow lock-up device (A) is a safety device which remains in the open position under normal operating condi-
tions and closes automatically and completely when the pre-set flow limits are exceeded.
The device trips due to the increase in the flow rate between 110% and 150% of the guaranteed flow rate specified on
the plate (see paragraph 2.8).
A
Fig. 4.4. Excess flow lock-up device
LOW-PRESSURE GAS REGULATOR | DESCRIPTION AND OPERATION | REV. 00 36
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Use, maintenance and warning manual