PIETRO FIORENTINI FE Series Manual page 32

Some typical versions are listed below, also by way of example:
NOTE!
The different versions of the equipment must be:
• contractually established;
• set up at PIETRO FIORENTINI S.p.A. plants only
Type
Version
with safety
diaphragm
Version
with thermal valve
Version
set up for
indoor installation
Underground version
Painted version
Low temperature version
LOW-PRESSURE GAS REGULATOR
EN
Use, maintenance and warning manual
Description
In case of breakage of the working diaphragm, installing a safety diaphragm guarantees:
• service continuity;
• adjusted pressure control;
• the ability to identify the working diaphragm through controlled gas leakage into the
atmosphere (< 30 l/h gas).
The thermal valve, built into the inlet fitting, ensures that the power supply to the regula-
tor is cut off when the ambient temperature reaches 160 °C.
NOTE!
The version with thermal valve requires that specific fittings are requested
from the sales offices PIETRO FIORENTINI S.p.A..
In the event of complete failure, this version guarantees that gas is dispersed into the
atmosphere at a lower than 30 l/h flow rate.
NOTE!
Indoor installation is subject to the regulations in force in the country of in-
stallation. Regulatory checks are the responsibility of the installer.
Special surface guards combined with the use of specific components make this ver-
sion suitable for installation in underground wells.
ATTENTION!
The underground version of the regulator is not suitable for operation if com-
pletely covered by earth or other types of debris.
NOTE!
For specific installation and checks of the underground version after com-
missioning, see chapter 7.
This version is suitable for:
• marine environments (against salt corrosion);
• highly humid atmospheres.
This version guarantees correct operation with:
• Ambient temperature: up to -40 °C and/or
• gas temperature up to -20 °C.
NOTE!
The low temperature version of the regulator is identified through a specific
plate (see paragraph 2.8).
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