RMG REGEL + MESSTECHNIK GMBH

... providing all components you need for reliability in gas supply

Bild einsetzen(maximale Größe)

Operation and Maintenance 630.20Spare Parts Edition 08/94

Osterholzstraße 45 • D-34123 Kassel • P. o. Box 10 29 67 • D-34029 KasselTelephone (0561) 5007-0 • Telefax (0561) 5007-107 • Telex 099 626

1. General Remarks

Our leaflet 630.00 gives full information with technical data, different versions and dimensions of the pilot RMG 630 a.

Our brochure "General Operating Instructions for Gas Pressure Regulators and Safety Devices" will be useful to

fit the pilot into the line, put it into service and find faults that might disturb the operation.

The construction, set-up, supervision and maintenance of gas pressure regulating stations are subject to special

technical rules which should be strictly observed, in particular those given by the DVGW Worksheets G 490, G 491,

and G 495.

The frequency of periodical maintenance to be foreseen for the pilot RMG 630 a should be determined according

to the prevailing service conditions and the type and composition of the gaseous medium. We, therefore,

abstain from imposing any fixed intervals and would rather refer you to the recommendations given by the

DVGW Worksheet 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 performance tests have shown lack of regulating accuracy.

Particular care should be given to the checking of sealings and diaphragms, as well as of all carrying and movable

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 specially marked in the spare parts lists in stock for prompt maintenance

availability.

630.20 p.2

2. Special Operating Instructions

2.1 Start-up valve

Depending on size, the gas pressure regulators RMG 402/502/503 are provided with a start-up valve to facilitate a

quick pressure compensation to be effected at the regulations diaphragm upon pressurization.

The following regulators wil be provided with a start-up valve:

• Before pressurizing open the start-up valve.

• After pressurizing close the start-up valve.

2.2 Adjusting the load limiting pressure

RMG 402

RMG 502/503

from DN 50 with pilot RMG 630a/640

from DN 80 with pilot RMG 620/630a/640

DN 80/150, 100/200

RMG 502, 503

approx 10-15 bar

RMG 402

approx 5-10 bar

The level of the adjusted load limiting pressure exerts a great

influence on the regulating accuracy of the pilot. In the order to

reach a high regulating accuracy combined with a low closing

pressure the load limiting pressure should be raised to such a

level as would not prejudice the operational stability of the gas

pressure regulating station. We recommend to set the load

limiting pressure as follows :

Load limiting setpoint level abovethe outlet pressure with regulators

3. Special maintenance Instructions

Pre-formed diaphragm (119, 169, 260)

When fitting the diaphragm be sure to observe the correct mounting position of the loop (see spare parts drawings

of the pilot units on pages S.11, S.13, S.15, S.17)

Diaphragm plate (107, 154, 276)

When tightening the closing cap (103, 167), hexagon nut (123, 280), and union piece (258) the diaphragm plate

should be secured against distorsion by spanner SW 24.

load limitingpressure gauge

measuring line

start-upvalve

load limiting pressureset point screw

outlet pressure set point screw

vent lineinlet pressuregauge

dosing screw

Pilot RMG 630a

bleedline

Main Regulator inlet pressure p outlet pressure pe a

Filter

Fig. 1: Basic Diagram of Pilot RMG 630 a with a main regulator.

630.20 p.3

- Dosing screw

The dosing screw is delivered with a basic adjustment set by RMG. For reducing the amplification

turn the dosing screw anti-clockwise.

bleed line only for regulators RMG 502/503

Controlunit

Load limi-ting unit

adjusting movement

valve body

diaphragm

hexagon nut

pencil-marks:

for the stops

for the central position

Adjusting the diaphragm system (119, 260)

Fig. 2: Diaphragm System

Torque

item no. torque

M in Nm

6

12

20

A

Union piece (158)

Grease the threaded plug of the completely assembled union piece with LOCTITE and srew it into the metal harmonica

connection piston (173) so that the cross hole of the union piece is positioned 0,5 mm to 1mm below the valve body

(171) cross hole.

Attention: Both cross holes must be in alignment.

Valve insert (105, 156, 278)

Use the adjusting screw (124, 185, 284) to get the diaphragm system in a position that will allow the valve insert to be

fitted.

Base plate (1)

The locating faces of the load limiting and control unit base plates must be adjusted even to each other.

Spindle (33) of the amplifying valve

For basic adjustment of the amplifying valve turn the spindle (33) so far, that the spindle groove (with a black mark)

comes in line with the front edge of the sleeve (31) fixed in the guiding screw (32).

176

4, 114, 115, 132, 165, 183, 251, 267, 271, 272

103, 123, 167, 258, 280

630.20 p.4

For correct fitting of the diaphragm system into a safe position in which the cross holes of the union piece (122, 263)

and of the valve body (121, 261) are in true alignment: turn diaphragm clockwise and anti-clockwise to the stops to

find the central position.

Lubricants

part (to be greased slightly)

all o-rings

all sliding surfaces

spring plate recesses (22, 108, 161, 263)

threads of cover (112, 282)

threads of plate (181)

all fastening and pipe screws

lubricant

silicone grease

fitting paste

high duty grease

part no.

00 027 081

00 027 091

00 027 058

Screw Locking

part (to be greased slightly) screw locking part no.

threads of locking cap (103, 167)

threads of hexagon nut (123, 280)

threads of union piece (158, 258) LOCTITE 00 026 688

630.20 p.5

4. Spare Parts4.1 Spare Parts Drawing / Pilot RMG 630a - outlet pressure range Wh 0,15 bar to 1 bar (with enlarged diaphragm type measuring unit)

at option: without or with pa-gauge

with pa-gauge

without pa-gauge

Parts marked by an asterisk * are to be kept in stock for maintenance.

630.20 p.6

overpressureprotectionsee 925.20

turned by 45°

sketch without filterand inlet connection

filtersee 905.20

automatically operatingload limiting unitsee page 11

control unitsee page 17

(without filter and inlet connection)

adjustable amplifying valve

Spare Parts Drawing / Pilot RMG 630a- outlet pressure range Wh 1 bar to 40 bar (with diaphragm type measuring unit)

at option: without or with pa-gauge

with pa-gauge

Wh 1 bar to 20 bar Wh 10 bar to 40 bar

without pa-gauge

control unitsee page 13

automaticallyoperatingload limiting unitsee page 11

adjustable amplifying valve

(without filter and inlet connection)

filtersee 905.20

sketchwithout filterand inlet connection

Parts marked by an asterisk * are to be kept in stock for maintenance.

630.20 p.7

overpressureprotectionsee 925.20

630.20 p.8

Parts marked by an asterisk * are to be kept in stock for maintenance.

Spare Parts Drawing / Pilot RMG 630a- outlet pressure range Wh 20 bar to 90 bar (with metal harmonica type measuring unit)

at option: without or with pa-gauge

with pa-gauge

without pa-gauge

control unit see page 15

automaticallyoperatingload limiting unitsee page 11

filtersee 905.20

adjustable amplifying valve

(without filter and inlet connection)

sketchwithout filterand inlet connection

part no.item

no. description

Parts marked by an asterisk * are to be kept in stock for maintenance.

material key:

St ... steel

Ms ... brass

NSt ... stainless steel

material

... plastic material

... rubber-like plastic material

... light metal

4.2 Spare Parts List / Pilot RMG 630a

630.20 p.9

K

KG

LM

1

2

3

4

5

-

-

-

-

-

6

7

8

9

10

11

12*

13

14

15

16

17

18

19

20

21

22

-

-

-

23

-

-

-

-

-

24

25

26

27

28

29

0,15 bar...1bar 1 bar ...40 bar 20 bar ... 90 bar

base plate

screwed socket

washer

hexagon screw

pressure gauge:

for pressure rating PN 16

for pressure rating PN 25/ANSI 150

for pressure rating PN 40

for pressure rating ANSI 300

for pressure rating ANSI 600

screwed socket

cap nut

cutting ring

straight pipe

dosing screw Ø 0,5

screwed socket

sealing ring

screwed socket

screwed socket

locking cone

cap nut

cutting ring

straight pipe

cap nut

cutting ring

screwed socket

spring plate:

for Wh 0,15 bar to 1 bar

for Wh 1 bar to 10 bar

for Wh 5 bar to 40 bar

spring plate:

for Wh 0,15 bar to 1 bar (blue)

for Wh 1 bar to 5 bar (yellow)

for Wh 2 bar to 10 bar (brown)

for Wh 5 bar to 20 bar (red)

for Wh 10 bar to 40 bar (green)

locking screw

screwed socket

cap nut

cutting ring

screwed socket

o-ring (8 pcs.)

- Wh 0,15 bar to 1 bar (with enlarged diaphragm type measuring unit)

- Wh 1 bar to 40 bar (with diaphragm type measuring unit)

- Wh 20 bar to 90 bar (with metal harmonica type measuring unit)

LM

St

St

St

NSt/Ms

NSt/Ms

NSt/Ms

NSt/Ms

NSt/Ms

St

St

St

St

Ms

St

LM

St

St

St

St

St

St

St

St

St

LM

LM

LM

FSt

FSt

FSt

FSt

FSt

Ms

St

St

St

St

KG

10 021 758

00 030 023

00 008 279

00 010 024

00 026 314

00 026 284

00 026 282

00 026 283

00 026 285

00 031 810

-

-

-

10 014 015

10 000 714

00 018 842

00 031 810

00 031 609

00 032 004

00 030 803

00 030 903

00 032 101

00 030 804

00 030 904

00 030 074

10 000 114

-

-

10 000 156

-

-

-

-

10 000 121

00 030 111

00 030 804

00 030 904

00 030 074

00 020 225

10 021 758

00 030 023

00 008 279

00 010 024

00 026 314

00 026 284

00 026 282

00 026 283

00 026 285

00 031 865

00 030 803

00 030 903

00 032 101

10 014 015

10 000 714

00 018 842

00 031 810

00 031 609

00 032 004

00 030 803

00 030 903

00 032 101

-

-

-

-

10 000 114

10 000 148

-

10 000 063

10 000 115

10 000 064

10 000 149

10 000 121

00 030 111

00 030 804

00 030 904

00 030 074

00 020 225

10 021 758

00 030 023

00 008 279

00 010 024

-

-

-

00 026 285

00 026 285

00 031 810

-

-

-

10 014 015

10 000 714

00 018 842

00 031 810

00 031 609

00 032 004

00 030 803

00 030 903

00 032 101

-

-

-

-

-

-

-

-

-

-

-

10 000 121

00 030 111

00 030 804

00 030 904

00 030 074

00 020 225

part no.item

no. description

Parts marked by an asterisk * are to be kept in stock for maintenance

material key:

St ... steel

FSt ... spring steel

NSt ... stainless steel

material

... plastic material

... rubber-like plastic material

... plexiglass

Spare Parts List / Pilot RMG 630a

630.20 p.10

K

KG

PGl

0,15 bar...1bar 1 bar ...40 bar 20 bar ... 90 bar

- Wh 0,15 bar to 1 bar (with enlarged diaphragm type measuring unit)

- Wh 1 bar to 40 bar (with diaphragm type measuring unit)

- Wh 20 bar to 90 bar (with metal harmonica type measuring unit)

LM ... light metal

Ms ... brass

30

31

32

33

34*

35*

36*

60

61*

37

38

39

40

41*

42

-

-

-

-

43

44

-

-

-

-

45

46

47

48*

49

50

51

52

53

54

55

56

57*

protection cap

sleeve

guiding screw

spindle

o-ring (1 pc.)

o-ring (1 pc.)

locking washer

disc

o-ring (1 pc.)

at option: without/with pa - gauge

without pa - gauge

cap nut

cutting ring

dosing screw Ø 0,5

screwed socket

sealing ring

with pa - gauge Wh 0,15 bar to 20 bar

pressure gauge:

for Wh 0,15 bar to 1 bar

for Wh 1 bar to 5 bar

for Wh 2 bar to 10 bar

for Wh 5 bar to 20 bar

screwed socket

overpressure protection:

for Wh 0,15 bar to 1 bar

for Wh 1 bar to 5 bar

for Wh 2 bar to 10 bar

for Wh 5 bar to 20 bar

screwed socket

dosing screw Ø 0,5

screwed socket

sealing ring

with pa - gauge for Wh 10 bar to 90 bar

pressure gauge

screwed socket

screwed socket

cap nut

cutting ring

straight pipe

dosing screw Ø 0,5

screwed socket

sealing ring

K

PGl

Ms

NSt

KG

KG

FSt

LM

KG

St

St

Ms

St

LM

NSt/Ms

NSt/Ms

NSt/Ms

NSt/Ms

St

St

Ms

St

LM

NSt/Ms

St

St

St

St

St

Ms

St

LM

00 026 343

10 000 171

10 000 144

10 000 145

00 020 332

00 020 283

00 019 065

10 022 218

00 020 231

00 030 804

00 030 904

10 014 015

10 009 683

00 018 842

00 026 891

-

-

-

00 031 810

10 023 335

-

-

-

00 031 817

10 014 015

10 009 683

00 018 842

-

-

-

-

-

-

-

-

-

00 026 343

10 000 171

10 000 144

10 000 145

00 020 332

00 020 283

00 019 065

10 022 218

00 020 231

00 030 804

00 030 904

10 014 015

10 009 683

00 018 842

-

00 026 281

00 026 314

00 026 284

00 031 810

-

10 023 336

10 023 337

10 023 338

-

10 014 015

10 000 714

00 018 842

00 026 282

00 031 810

00 031 455

00 030 804

00 030 904

00 032 141

10 014 015

10 009 683

00 018 842

00 026 343

10 000 171

10 000 144

10 000 145

00 020 332

00 020 283

00 019 065

10 022 218

00 020 231

00 030 804

00 030 904

10 014 015

10 009 683

00 018 842

-

-

-

-

-

-

-

-

-

-

-

-

-

00 026 285

00 031 810

00 031 455

00 030 804

00 030 904

00 032 141

10 014 015

10 009 683

00 018 842

Parts marked by an asterisk * are to be kept in stock for maintenance.

630.20 p.11

standard execution for connection to electric actuator

4.3 Spare Parts Drawing / RMG 630a load limiting unit - automatically operating

part no.item

no. description

Parts marked by an asterisk * are to be kept in stock for maintenance.

material key:

St ... steel

LM ... light metal

NSt ... stainless steel

material

Ms

KG

NFSt

... brass

... rubber-like plastic material

... stainless spring steel

4.4 Spare Parts List / RMG 630a

630.20 p.12

K ... plastic material

AlBz ... aluminium bronze

valve seat dia. Ø 3

load limiting unit - automatically operating

101

102

103

104*

105*

106

107

108

109

110

113

115

117*

118*

119*

120*

121

122

123

126*

130*

131

132

cover

pressure spring

locking cap

o-ring

valve insert

grooved dowel pin

diaphragm plate

spring plate

pressure spring

spring housing

washer

hexagon screw

piston, pre-assembled

o-ring

pre-formed diaphragm

sealing insert

valve body

union piece

hexagon nut

o-ring

plate, pre-assembled

washer

cylinder screw

LM

NFSt

NSt

KG

LM

St

LM

LM

NFSt

LM

St

St

LM/NSt/NFSt/K

KG

KG

KG

LM

NSt

St

K

Ms/AlBz/NSt/

St/LM/KG

St

St

10 000 190

10 010 463

10 000 188

00 020 225

10 000 061

00 017 197

10 000 110

10 000 073

10 000 072

10 000 071

00 008 279

00 010 377

10 000 186

00 020 332

10 000 191

10 000 066

10 000 137

10 000 108

00 013 114

00 020 293

10 010 480

00 008 279

00 010 150

Parts marked by an asterisk * are to be kept in stock for maintenance.

630.20 p.13

4.5 Spare Parts Drawing / RMG 630a control unit - with a downgrade characteristic line

10 000 190

10 010 463

10 000 188

00 020 225

10 000 061

00 017 197

10 000 110

10 000 062

10 000 100

10 000 116

00 008 279

00 006 493

00 010 377

10 000 186

00 020 332

10 000 191

10 000 066

10 000 137

10 000 108

00 013 114

10 002 795

00 013 136

part no.item

no. description

Parts marked by an asterisk * are to be kept in stock for maintenance.

material key:

St ... steel

LM ... light metal

NSt ...stainless steel

material

FSt

KG

NFSt

... spring steel

... rubber-like plastic material

... stainless spring steel

4.6 Spare Parts List / RMG 630a

630.20 p.14

K ... plastic material

valve seat dia. Ø 3

control unit - with a downgrade characteristic line

101

102

103

104*

105*

106

107

108

109

110

111*

112

113

114

115

117*

118*

119*

120*

121

122

123

124

125*

cover

pressure spring

locking cap

o-ring

valve insert

grooved dowel pin

diaphragm plate

spring plate

pressure spring

spring housing

sealing

cover

washer

hexagon screw

hexagon screw

piston, pre-assembled

o-ring

pre-formed diaphragm

sealing insert

valve body

LM

NFSt

NSt

KG

LM

St

LM

LM

FSt

LM

K

St

St

St

St

LM/NSt/NFSt/K

KG

KG

KG

LM

NSt

St

NSt

St/K

s. p.7 items 22, 23

union piece

hexagon nut

adjusting screw

hexagon collar nut

Parts marked by an asterisk * are to be kept in stock for maintenance.

630.20 p.15

standard execution for connection toelectric actuator

4.7 Spare Parts Drawing / RMG 630a control unit with metal harmonica type - with a downgrade characteristic line measuring unit

LM

LM/NSt/NFSt/K

NSF

LM

KG

LM

St

NSt

LM

St

NSt

FSt

St

St

St

St

NSt

KG

KG

KG

LM

KG

NSt/St

KG

St

St

KG

St

St

St

St/K

NSt

LM

LM

K

St/Ms

St

St

KG

St/NSt

Parts marked by an asterisk * are to be kept in stock for maintenance.

material key:

St ... steel

LM ... light metal

NSt ... stainless steel

10 011 768

10 000 186

10 010 463

10 000 110

00 020 225

10 011 775

00 017 197

10 011 773

10 011 767

10 011 772

10 011 774

10 010 444

00 026 385

00 026 384

00 010 548

00 008 279

10 000 188

00 020 332

10 000 191

10 000 066

10 011 769

00 020 416

10 011 764

00 020 317

00 006 157

00 010 318

00 020 293

10 011 770

00 008 279

00 010 097

00 013 145

10 010 447

10 011 795

10 021 766

10 021 765

10 000 079

00 014 156

00 010 150

00 020 326

10 010 538

control unit with metal harmonica - with a downgrade characteristic line

type measuring unit

part no.item

no. description material

FSt

NFSt

Ms

... spring steel

... stainless spring steel

... brass

4.8 Spare Parts List / RMG 630a

630.20 p.16

valve seat dia. Ø 3

151

152*

153

154

155*

156*

157

158

159

160

161

162

163

164

165

166

167

168*

169*

170*

171

172*

173

174*

175

176

180*

181

182

183

184*

185

190

191

192*

193

194

195

196*

197

cover

piston, pre-assembled

pressure spring

diaphragm plate

o-ring

valve insert

grooved dowel pin

union piece

spring housing

guiding pin

spring plate

pressure spring

axial disk (2 pcs.)

axial needle bearing

cylinder screw

washer

locking cap

o-ring

pre-formed diaphragm

sealing insert

valve body

o-ring

metal harmonica, complete

o-ring

washer

cylinder screw

o-ring

plate

washer

cylinder screw

hexagon collar nut

hexagon screw

for connection to electric actuator

spring plate

ring

sealing

plate, complete

washer

cylinder screw

o-ring

clutch device, pre-assembled

K ... plastic material

KG ... rubber-like plastic material

*Parts marked by an asterisk are to be kept in stock for maintenance

630.20 p.17

4.9 Spare Parts Drawing RMG 630a Control unit with enlarged diaphragm -Wh 20 mbar to 1000 mbar Type neasuring unit

part no.

valve seat dia. Ø 3

item

no. description

Parts marked by an asterisk * are to be kept in stock for maintenance.

material key:

St ... steel

NSt ... stainless steel

NFSt ... stainless spring steel

material

... plastic material

... rubber-like plastic material

... rubber-like plastic material (NBR)

4.10 Spare Parts List / RMG 630a

630.20 p.18

K

KG

KV

control unit with enlarged - Wh 20 mbar to 1000 mbar

diaphragm type measuring unit

Ms ... brass

LM ... light metal

251

252

253*

254*

255

256

257*

258

259*

260*

261

262*

263

264

265

266

267

268*

269

270

271

272

273*

274

275*

276

277*

278*

279

280

281

282*

283

284

cylinder screw

disc

o-ring

diaphragm

thrust piece

diaphragm plate

o-ring

connection piece

o-ring

diaphragm

valve body

stem seal

connection piece

spring plate

pressure spring

disc

hexagon screw

hexagon collar nut

pressure spring

diaphragm cover

hexagon collar nut

cylinder screw

USIT-ring

diaphragm body

piston, premounted

diaphragm plate

o-ring

valve insert

grooved dowel pin

hexagon collar nut

spring body

sealing

cover

adjusting screw

St

St

KG

KG

LM

LM

KG

Ms

KG

KG

LM

KG

NSt

LM

FSt

St

St

St/K

NFSt

LM

St

St

St/KG

LM

NFSt/NSt/KV

LM

KG

LM

St

St

LM

K

St

NSt

00 010 551

00 014 153

00 020 518

10 008 547

10 011 939

10 011 938

00 020 595

10 011 935

00 020 332

10 000 191

10 000 137

10 000 066

10 000 108

10 000 114

10 000 156

00 008 279

00 006 493

00 013 136

10 011 928

10 011 937

00 005 559

00 010 550

00 020 908

10 011 936

10 000 186

10 000 110

00 020 225

10 000 061

00 017 197

00 013 114

10 000 062

10 000 100

10 000 116

10 021 331