PIETRO FIORENTINI FE Series - Excess Flow Lock-Up Device

36
SERIES FE
EN
LOW-PRESSURE GAS REGULATOR | DESCRIPTION AND OPERATION | REV. 00
Use, maintenance and warning manual
4.6.2 - EXCESS FLOW LOCK-UP DEVICE
NOTE!
If the device trips, service will be interrupted.
The excess ow 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 ow limits are exceeded.
The device trips due to the increase in the ow rate between 110% and 150% of the guaranteed ow rate specied on
the plate (see paragraph 2.8).
A
Fig. 4.4. Excess ow lock-up device