RMG 214 Guide

214.20
Gas Pressure Regulator
RMG 214 (D 144a)
Operation and Maintenance,
Spare Parts edition 07/2003
Serving the Gas Industry - WORLDWIDE

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1. General
The "Technical Description 214.00" for the gas pressure regulator of series RMG 214 contains technical data,
versions and dimensions.
Our brochure "General Operating Instructions for Gas Pressure Regulators and Safety Devices" will be
useful to fit the valve into the line, put into the line, put into service and find faults that might disturb the
operation.
The construction, set-up, supervision and maintenance of gas pressure pressure stations are subject to
various national technical rules, which should be strictly observed. In Germany please refer to the DVGW-
Worksheets G 490, G 491 and G 495.
Note: The vent line of the integrated safety relief valve is to be connected to the open atmosphere (outside of
the building).
The frequency of periodical maintenance of gas pressure regulator RMG 214 should be determined
according to the prevailing conditions and the type and composition of the gaseous medium. We, therefore,
abstain from imposing any fixed intervals. In Germany please refer to the recommandations given by the
DVGW-Worksheets G 495.
For maintenance all parts are to be cleaned and subjected to a thorough visual inspection. A visual inspection
should not be omitted when the course of operation or functional tests have shown lack of regulating
accuracy.
Particular care should be given to the checking of sealings and diaphragms, as well as carrying and moving
parts. Damaged parts should be replaced by new ones.
The item numbers referred to in the maintenance instructions are identical with those of spare parts drawings
and spare parts lists. We recommend to keep all parts that are marked "W" in the spare parts lists in stock for
prompt maintenance availibility. .
2. Special Operating Instructions
valve seat diameter
Ta ke care that not more than the permissible inlet pressure prevails on the inlet side of the RMG 214 as to
avoid damage to internal parts
valve seat diameter 6 mm pe max = 350 bar
valve seat diameter 8 mm pe max = 220 bar
valve seat diameter 11 mm pe max = 150 bar
regulating deviations
Admissible regulating deviations depend on constructive details and can be caused by:
a) inlet pressure variations (see table in Technical Description 214.00 or in the RMG booklet)
b) flow variations (accuracy depending on the individual setpoint spring, see table in Technical
Description 214.00 or in the RMG booklet)
c) flow resistance in the outlet channels (increases with higher flowrate)
bubble-tight shut-off
As the regulators have valve sealing made of plastic material, the close bubble-tight at zero consumption.

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3. Maintenance Hints
3.1 piston (7)
The piston (7) responsible for tight shut-off can be exchanged after removing the screw cap (21).
3.2 internal parts (valve seat (8), guide piece (10), diaphragm (11), setpoint spring (14), etc.)
The internal parts can be reached from under the body by unscrewing the spring housing (15)
or the intermediate piece (52).
The internal parts should move easily and must be faultless. Take care that the measuring diaphragm
is not beginning to dissolve or fall apart due to aggressive gas components.
NOTE: When mounting the spring housing take care not to tighten the lid too strongly. Only apply
enough force to press the diaphragm down for not more than 1 mm. This is sufficient to achieve
tightness.

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W 31
30
29
W 28
27
26
25
23
22 W
21
20 W
18
17
16
15
14
13
W12
W11
10
W 9
8
W 7
6
5
W 4
W 3
2
24
19
1internal safety
relief valve
4. Spare Parts RMG 214
4.1 Spare Parts Drawing
4.1.1 Version with internal measuring impulse connection
parts marked Ware to be kept in stock for maintenance.

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57
56 W
55
54 W
53
52
W 51
50
1
19
24
2
W 3
W 4
5
6
W 7
8
W 9
10
W 11
W 12
13
14
15
16
17
18
20 W
21
22 W
23
25
26
27
W 28
29
30
W 31
integrated safety
relief valve
4. spare parts RMG 214
4.1 spare parts drawing
4.1.2 version with external measuring line
parts marked Ware to be kept in stock for maintenance.

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4. spare parts RMG 214
4.1 spare parts drawing
4.1.3 back-flow proof version, only for valve seat dia. 6 mm
8380 81
W
82 84 85
W
parts marked Ware to be kept in stock for maintenance.

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pos.-
no. description amount W material RMG part no.
1 gauge, at option:
0 to 400 bar 1 Ms 00 026 772
0 to 100 bar 1 Ms 00 026 479
2 intermediate piece 1 St 10 015 185
3 sealing ring at option:
0,5 mm thick 1 W LM 00 018 788
1,0 mm thick 1 W LM 00 018 323
4 sealing ring 1 W Cu 00 018 586
5 setpoint spring 1 NFSt 10 014 771
6 intermediate piece for spring 1 Ms 10 014 785
7 piston, at option:
for valve seat dia. Ø 6 and Ø 8
peup to 100 bar 1 W NSt/Teflon 10 014 764
peabove 100 bar 1 W NSt/Nylon 10 014 768
for valve seat dia. Ø 11
peup to 100 bar 1 W NSt/Teflon 10 014 775
peabove 100 bar 1 W NSt/Nylon 10 014 778
8valve seat dia., at option:
valve seat dia. Ø 6 1 Ms 10 014 761
valve seat dia. Ø 8 1 Ms 10 014 772
valve seat dia. Ø 11 1 Ms 10 014 737
9 sealing ring 1 W Cu 00 003 879
10 guide piece 1 Ms 10 014 740
11 diaphragm, at option:
pato 10 bar (4 mm thick) 1 W KG 10 014 757
pato 10 bar (6 mm thick) 1 W KG 10 014 759
12 sealing ring, at option:
pato 10 bar (for diaphragm 4 mm thick) 1 W K 00 018 167
pato 10 bar (for diaphragm 6 mm thick) 1 W K 00 018 056
13 spring plate, at option:
pa1 to 5 bar for spring F1 Ø 8 1 St 10 014 746
pa3 to 25 bar for spring F2 Ø 11 1 St 10 014 749
pa5 to 60 bar for spring F3 Ø 14 1 St 10 014 752
pa10 to 80 bar for spring F4 Ø 16 1 St 10 014 755
14 spring, at option:
pa1 to 5 bar F1 Ø 8 1 FSt 10 014 745
pa3 to 25 bar F2 Ø 11 1 FSt 10 014 748
pa5 to 60 bar F3 Ø 14 1 FSt 10 014 751
pa10 to 80 bar F4 Ø 16 1 FSt 10 014 754
15 lid 1 Ms 10 014 736
16 intermediate piece for spring, at option:
pa1 to 5 bar for spring F1 Ø 8 1 St 10 014 747
pa3 to 25 bar for spring F2 Ø 11 1 St 10 014 750
pa5 to 60 bar for spring F3 Ø 14 1 St 10 014 753
pa10 to 80 bar for spring F4 Ø 16 1 St 10 014 756
17 setpoint adjusting screw 1 Ms/St 10 014 738
parts marked Ware to be kept in stock for maintenance.
material key:
St ... steel
LM ... aluminium
Ms ... brass
Cu ... copper
K... plastic material
KG ... rubber-like plastic material
FSt ... spring steel
NFSt ... inox spring steel
NSt ... inox steel
4.2 spare parts list RMG 214

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pos.-
no. description amount W material RMG part no.
18 hexagonal nut 1 Ms 18 353 938
19 gauge or Verschluflschraube
gauge, at option:
0 to 10 bar 1 Ms 00 026 281
0 to 25 bar 1 Ms 00 026 284
0 to 60 bar 1 Ms 00 026 283
0 to 100 bar 1 Ms 00 026 285
sealing screw 1 Ms 10 014 784
20 sealing ring 1 W Cu 00 018 512
21 sealing screw 1 Ms 10 014 787
22 sealing ring, at option:
0,5 mm thick 1 W LM 00 018 797
1 mm thick 1 W LM 00 018 818
23 body G1 1 Ms 10 014 783
24 adjusting screw 1 Ms 10 014 791
25 counter nut 1 Ms 10 014 797
26 spring, at option:
paup to 30 bar 1 NFSt 10 014 771
paabove 30 bar 1 NFSt 10 014 794
27 screw connection DS 10 1 St 00 030 015
28 sealing ring 1 W LM 00 018 524
29 piston 1 Ms 10 014 789
30 egalizing piece for spring 1 Ms 10 014 795
31 sealing hub 1 W KG 00 018 057
50 wire ring 1 NSt 10 015 198
51 sealing washer 1 W Teflon 10 015 197
52 intermediate piece 1 Ms 10 015 195
53 glide washer 1 Ms 10 015 191
54 sealing ring, at option:
2,0 mm thick 1 W LM 00 018 639
2,5 mm thick 1 W LM 00 018 640
3,0 mm thick 1 W LM 00 018 641
55 screw connection DS 16 1 St 00 030 008
56 sealing ring 1 W LM 00 006 608
57 steering pin, complete 1 Ms 10 015 208
80 body G1 1 Ms 10 015 201
81 sealing ring 1 W LM 00 018 706
82 spring 1 NFSt 10 015 206
83 sealing ring 1 Cu 00 005 121
84 screw connection 1 NSt 10 015 203
85 piston 1 W NSt/K 10 015 204
parts marked Ware to be kept in stock for maintenance.
material key:
St ... steel
LM ... aluminium
Ms ... brass
Cu ... copper
K... plastic material
KG ... rubber-like plastic material
FSt ... spring steel
NFSt ... inox spring steel
NSt ... inox steel

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The RMG Group of Companies on the internet: http://www.rmg.de
We supply you with products
for gas pressure regulation:
We reserve the right for technical changes
Serving the Gas Industry - WORLDWIDE
The other RMG Companies:
Bryan Donkin RMG Gas Controls Ltd.
Enterprise Drive, Holmewood, Chesterfield S42 5UZ, England
Telephone (++44) 1246 501-501 • Fax (++44) 1246 501-500
gas pressure regulating equipment, below ground gas control modules
RMG REGEL +MESSTECHNIK GMBH
Osterholzstrasse 45, D-34123 Kassel, Germany
Telephone (++49) 561 5007-0 • Fax (++49) 561 5007-107
gas pressure regulators and safety devices
RMG-GASELAN Regel + Meßtechnik GmbH
Julius-Pintsch-Ring 3, D-15517 Fürstenwalde, Germany
Telephone (++49) 3361 356-60 • Fax (++49) 3361 356-836
gas pressure regulating equipment, displacement meters, complete stations
RMG Messtechnik GmbH
Otto-Hahn-Strasse 5, D-35510 Butzbach, Germany
Telephone (++49) 6033 897-0 • Fax (++49) 6033 897-130
turbine meters, vortex meters, correctors, flow computers, odorizers
WÄGA Wärme-Gastechnik GmbH
Osterholzstrasse 45, D-34123 Kassel, Germany
Telephone (++49) 561 5007-0 • Fax (++49) 561 5007-207
design and assembly of gas pressure regulating and metering stations
Bryan Donkin RMG Co. of Canada Ltd.
50 Clarke Street South, Woodstock, Ontario N4S 7Y5, Canada
Telephone (++1) 519 5398531 • Fax (++1) 519 5373339
domestic regulators and safety devices
Karl Wieser GmbH
Anzinger Strasse 14, D-85560 Ebersberg, Germany
Telephone (++49) 8092 2097-0 • Fax (++49) 8092 2097-10
Heinrich-Lanz-Strasse 9, D-67259 Beindersheim/Pfalz, Germany
Telephone (++49) 6233 3762-0 • Fax (++49) 6233 3762-40
data logging, monitor systems, danger alarm systems
Betriebsstelle Beindersheim