Technical Data; Model Identification; Commissioning The Device; Operations Prior To Installation - Madas RG/2MTX Serie Manual Tecnico

2.0 - TECHNICAL DATA

• Use
• Ambient temperature
• Maximum pressure/operating pressure range
• Class
• Mechanical resistance
• Rp threaded connections in line
• 90° Rp threaded connections
• NPT threaded connections
• Filter element (only models FRG/2MT)
• In compliance with

2.1 - MODEL IDENTIFICATION

RG/2MT = without filter
FRG/2MT = with filter
A = (connections in line)
B = (connections in line)
C = (connections in line)
D = (connections in line)
E = (connections in line)
R = (if present, 90° connections- see fig.2)
X = (version suitable for ATEX zones 1, 21, 2, 22)
E.g.: FRG/2MTERX = Gas pressure regulator with filter, P1 range 400÷500 mbar, 90° connections, ATEX

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;
• Check that the line pressure IS WITHIN the P1 range indicated on the label of the product and that IT IS NOT
HIGHER than the maximum value;
• 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;
• Make sure that the pipe thread is not too long, to prevent damaging the body of the device when screwing it on;
• If the regulator is not fitted with a filter, it is advisable to install an adequate filter upstream;
• 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/2MT...X - FRG/2MT...X
: non-aggressive gases of the three families (dry gases)
: -15 ÷ +60 °C
: 100 mbar (version A) - 100÷200 mbar (version B) - 200÷300 mbar (version C)
300÷400 mbar (version D) - 400÷500 mbar (version E)
: A (P2 ± 15%)
: Group 2 (according to EN 13611)
: (DN 15 - DN 20 - DN 25) according to EN 10226
: (DN 15 - DN 20 - DN 25) according to EN 10226
: request feasibility
: filtering 50µm
: Regulation (EU) 2016/426 (Appliances burning gaseous fuels)
except models with note
ATEX Directive 2014/34/EU
P1 range: up to 100 mbar
P1 range: 100÷200 mbar
P1 range: 200÷300 mbar
P1 range: 300÷400 mbar
P1 range: 400÷500 mbar
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(pag. 24 and 27)
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Madas Technical Manual - REV. 0 of 10 May 2018
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