Italy giuliani anello Made Aluminium Pressure Regulator With Built-in Filter FGDR Model
Fuel: all three families of gas (city gas, methane, LPG); non
Connection: threaded UNI EN 10226-1; flanged PN16 EN1092-4
Maximum inlet pressure: 1 bar (MB); 6 bar (MB/6B)
Ambient temperature: -10°C to 60°C
Response pressure: blue spring: 30 to 120 mbar;neutral spring: 80
to 550 mbar
Max surface temperature: 60°C
Material: aluminium valve's body and cover; stainless steel springs
and control piston; NBR rubber basket and O-ring;other part are of
brass, aluminium and galvanised steel.
The maximum pressure slam shut off valves in the MB and MB/6B
series are safety devices kept open under normal work conditions
thanks to an automatic mechanism triggered upon
manually rearming. If the shut off plenum detects an inlet pressure
greater than the alibration value, it releases the closure device
which stops the gas flow.
The maximum pressure slam shut off valves MB - MB/6B conform to
Directive 2014/34/UE (ATEX) in group II category 2G and in group
II, category 2D; as such they are suitable for
installation in zones 1 and 21 and, even more so, in zones 2 and 22
as classified in enclosure I of Directive 99/92/EC.
The shut off valves described here are not suitable for use in
zones 0 and 20 as defined in Directive 99/92/EC. To determine the
qualification and extension of the hazardous zones, see standard EN
60079-10. If installed and maintained as per the conditions and
instructions given in the enclosed technical manual, the shut off
valve is not a source of specific danger.
In particular, under normal operating conditions, the device does
not emit inflammable substances such as to generate an explosive
atmosphere. The shut off plenum has a work membrane and a safety
membrane; if the work membrane breaks, the safety membrane
guarantees gas emission with flow rate no higher than 30 dm3/h.
A continuous explosive atmosphere able to generate a hazardous zone
0 is emitted solely in the event both membranes break
simultaneously. In the event the valve is installed in an
unmanned or poorly aired location, all the necessary precautions
should be taken to prevent the valve from being the cause of a zone
0. For example, the shut off plenum breather may be routed outside
via a copper pipe connected to the threaded hole G1/8" by removing
the dustproof brass cap.
The assembly position is indifferent; on horizontal piping, do not
position the valve rearming knob facing down. The following
guidelines should be followed: do not lever on the sleeve when
assembling the valve; ensure that the piping is well aligned and
that there are no obstructions or dirt inside; observe the flow
direction as shown by the arrow printed on the valve body; check
that all pressure, voltage, temperature etc. parameters are
complied with; do not install the valve in contact with plastered
walls; do not hinder or in any way obstruct the stroke of the rearming knob, as closure may not be guaranteed; fit a
suitable gas upstream of the valve. The shut off valve should be
installed upstream of the pressure regulator. The impulse outlet
(threaded hole G1/8") on the plenum should be connected via copper
pipe, with diameter no less than 4 mm, downstream of the regulator
at a distance from the regulator of 5 times the diameter of the
These valves are rearmed solely by hand in order to be able to
check and clear the causes of the emergency. To assist the
rearming, all flanged models are equipped with a dual gate pin,
which prevents having to construct by-passes on the piping between
valve upstream and downstream. To rearm the valves with dual gate
pin follow the instructions enclosed inside the pack, whereas for
the threaded series, which has only one gate
pin, simply pull the aluminium knob above the valve sleeve.
1. Check that all the utilities are off.
2. Slowly open the on/off valve upstream of the system.
3. Increase the shut off pressure by turning the appropriate
4. Open the valve by following the rearming procedure; if the valve
closes again, increase the shut off pressure again.
5. Increase the regulator outlet pressure until the set shut off
value. If while increasing the regulator the pressure, the shut off
valve is triggered, increase the shut off pressure until the valve
6. Slowly decrease the shut off pressure until the valve is
7. Restore the initial regulator outlet pressure.
8. Screw on the plastic safety caps on the screws that adjust the
regulator and the shut off valve.
The shut off valves do not require any special maintenance. In the
event of a fault, run a general overhaul and relative test on site.
Periodically check the working efficiency of the entire safety
system by increasing the regulator pressure until the shut off
valve is triggered. If the valve must be disassembled for any
reason, make sure there is no pressure in the circuit.
|FGDR32||009.0223.101||With neutral spring 10-25 mbar||1-1/4"|
|FGDR32||009.0223.102||With green spring 5-15 mbar||1-1/4"|
|FGDR32||009.0223.103||With violet spring 20-70 mbar||1-1/4"|
|FGDR32||009.0223.104||With brown spring 65-130 mbar||1-1/4"|
|FGDR32||009.0223.106||With white spring 120-250 mbar||1-1/4"|
|FGDR32||009.0223.107||With black spring 240-350 mbar||1-1/4"|