TECHNICAL MANUAL MT103
18
4.0
MODULARITY
The modular-type design of REFLUX 819/FO series regulators means that it is also possible to feitner the
emergency monitor regulator PM/819 or it the slam-shut incorporated with the body itself even after the
installation of the regulator without any modifications.
4.1
INCORPORATED SLAM-SHUT VALVE
When closing the slam shut incorporated into pressure regulator to be considered as safety accessory according
to Directive PED, cuts off the feeding of gas both to pressure regulator and to its pilot.
4.2
INCORPORATED SB/82 SLAM-SHUT VALVE
This is a device (fig. 8) which immediately blocks the gas flow if, following some kind of failure, the downstream
pressure reaches the set-point for its intervention, or is operated manually.
On the REFLUX 819/FO regulator, it is possible to have the SB/82 slam-shut incorporated both with the service
regulator and on the one functioning as in-line monitor.
The main characteristics of the slam-shut device are:
• intervention with pressure increase and/or decrease;
• design pressure: 100 bar for all the components;
• intervention accuracy (AG): ± 1% of the pressure set-point for pressure increases; ± 5% for pressure drops;
• manual resetting with internal by-pass operated by the resetting lever.
Fig. 8
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Содержание REFLUX 819/FO
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