Technical Data; Commissioning The Device; Operations Prior To Installation - Madas RG/2MBLZ Manual Del Usuario

2.0 - TECHNICAL DATA

• Use
• Ambient temperature
• Max operating pressure
• Safety lock closing time
• Accuracy class
• Overpressure shut off accuracy unit
• Closing pressure class
• Relief valve
• Connecting the vent
• Mechanical strength
• Rp threaded connections
• Flanged connections that can couple with PN 16 flanges
• NPT threaded or ANSI 150 flanged connections
• In compliance with
2.1 - MODEL IDENTIFICATION (for configurations see page 41 ÷ 43)
RG/2MBLZ: Pressure regulator - with safety shut-offs

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);
• install manual gas closing devices (e.g. ball valves) upstream and downstream of the regulator to protect it from any
pipe leak test;
• do consider that if the regulator is equipped with a relief valve, the latter is suitable for small quantities of gas to be
discharged and CANNOT replace the relief valve installed separately as a specific device;
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;
• 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 protection against impact or accidental contact if the device is accessible to unqualified personnel.
RG/2MBLZ
: non-aggressive gases of the three families (dry gases)
: -20 - +60°C
: 0.5 bar
: < 1 s
: AC=10 - (P2 ± 15%)
: AG=10
: SG=30
: tested according to the indications in EN 334
: G 3/8
: Group 2 (according to EN 13611)
: (DN 32 - DN 40 - DN 50) according to EN 10226
: (DN 32 FL - DN 40 FL - DN 50 FL) ISO 7005 / EN 1092-1
: on request
: ATEX Directive 2014/34/EU
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Madas Technical Manual - 4|4.2b - REV. 0 of 1 Apr 2019
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