Technical Data; Model Identification; Commissioning The Device; Operations Prior To Installation - Madas RG/2MB MIN Manual Del Usario

2.0 - TECHNICAL DATA

• Use
• Ambient temperature
• Max operating pressure
• Trigger pressure range
• Accuracy class
• Overpressure shut off accuracy unit
• Closing pressure class
• Shut off closing time
• Mechanical strength
• Rp Threaded connections
• Flanged connections that can be coupled
to PN 16 flanges
• NPT threaded or ANSI 150 flanged connections : on request
• In compliance with
* DN 25 with swivel flanges

2.1 - MODEL IDENTIFICATION

RG/2MB MIN: Pressure regulator for gas with underpressure shut off (UPSO) without filter
FRG/2MB MIN: Pressure regulator for gas with underpressure shut off (UPSO) with incorporated filter

3.0 - COMMISSIONING THE DEVICE

3.1 - OPERATIONS PRIOR TO INSTALLATION

• It is necessary to close the gas upstream of the device prior to installation;
• Make sure that the line pressure DOES NOT EXCEED the maximum pressure declared on the product label;
• Protective caps (if any) must be removed prior to installation;
• The pipes and inside of the device must be clear of any foreign bodies;
• IMPORTANT: to avoid possible pumping and/or disturbances in the gas flow, a straight pipe section equal to at least 5
DN must be installed (downstream of the regulator).
• IMPORTANT: install manual gas closing devices (e.g. ball valves) upstream and downstream of the regulator to protect
it from any pipe leak test;
If the device is threaded:
• make sure that the pipe thread is not too long, to prevent damaging the body of the device when screwing it on;
If the device is flanged:
• make sure the inlet and outlet counter-flanges are perfectly coaxial and parallel in order to prevent unnecessary
mechanical stress to the body. Also calculate the space to insert the seal gasket;
• With regard to tightening operations, equip yourself with one or two calibrated torque wrenches or other controlled
locking tools;
• If the regulator is not fitted with a filter, it is advisable to install an adequate filter upstream;
• Consider the space required to restore the device and any maintenance operations;
• With outdoor installation, it is advisable to install a protective roof to prevent rain from oxidising or damaging parts of the device.
• According to the plant geometry, check the risk of an explosive mixture arising inside the piping;
• If the regulator is installed near other devices or as part of an assembly, compatibility between the regulator and
these devices must be evaluated beforehand;
• Provide a protection against impacts or accidental contacts if the device is accessible to unqualified personnel.
RG/2MB MIN - FRG/2MB MIN
: non-aggressive gases of the three families (dry gases)
: -15 - +60 °C
: 0.5 bar or 0.5 - 2 bar (see product label)
: 30 - 450 mbar or 300 - 700 mbar (see product label)
: AC=15 → (P2 or Pa ± 15%)
: AG= up to 10
: SG=30
: < 1 s
: Group 2 (according to EN 13611)
: (DN 20 - DN 25 - DN 32 - DN 40 - DN 50) according to EN 10226
: (DN 25* - DN 32 - DN 40 - DN 50) according to ISO 7005
: Directive PED 2014/68/EU (only for versions with Pe 0.5-2 bar)
ATEX Directive 2014/34/EU
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Madas Technical Manual - 4|4.3b - REV. 0 of 26 Feb 2019
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