RMG 711 S2 Guía

711.22

edition 09/2004

Operation and Maintenance,

Spare Parts

Serving the Gas Industry - WORLDWIDE

We supply you with products

for gas pressure regulation:

Safety Shut-Off Valve

RMG 711 S2

The other RMG Companies:

711.22 p.02 GB

Contents page

1. General remarks 3

2. Safety notices 3

3. Special operating notices 4

4. Special maintenance notices 4

4.1 Switch gear 4

4.2 Main valve 4

4.3 Screw tightening torques 5

4.4 Lubricants 5

5. Spare parts

5.1 Spare parts drawing 6

5.2 Spare parts list 7, 8

5.3 Spare parts drawing additional parts 9

5.4 Spare parts drawing accessories 10

5.5 Spare parts list additional parts 11

5.6 Spare parts list accessories 11

5.6 Parts for maintenance 12

1. General remarks

Every person engaged with installation, supervision, or maintenance of the safety shut-off valve (SSV)

RMG 711 S2 is requested to read the following leaflets and brochures beforehand:

- Technical Description 711.02 - contains technical data, measurements, and describes function and

design.

- General Operating Instructions for Gas Pressure Regulators and Safety Devices - this RMG bro-

chure describes installation and operation, nad includes general hints on fault finding and repair.

- Operation and Maintenance, Spare Parts 711.22 - contains further details on installation and operation

of the safety shut-off valve RMG 711 S2. Maintenance instructions and the spare part drawings and -lists

of the main valve are also included.

- The related functional elements are described in separate “Operation and Maintenance, Spare Parts”-

leaflets:

SSV actuator type K 16, K 17, K 18, K 19 RMG leaflet 670.20

push-button valve RMG 910a RMG leaflet 910.20

Additionally, the relevant national rules and laws have to be observed (In Germany please refer to the

DVGW worksheets G 600, G 459/II, G 491 und G 495).

The frequency of periodical maintenance of the safety shut-off valve RMG 711 S2 should be determined

according to the prevailing conditions and the type and composition of the gaseous medium. Therefore,

no fixed maintenance intervals can be prescribed. For Germany: At the beginning we recommend to use

the maintenance intervals stated in the DVGW worksheet G 495. Then individual maintenance intervals

should be determined for every station.

For maintenance all parts are to be cleaned and subjected to a thorough visual inspection. A visual in-

spection should also occur 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 mo-

ving parts. Damaged parts should be replaced by new ones. The item numbers referred to in the mainte-

nance instructions are identical with those of spare parts drawings and spare parts lists.

We recommend to keep all parts that are specially marked "W" in the spare parts lists in stock for prompt

maintenance availibility.

1.1 Safety symbols

Safety symbols include the following key words in these operating instructions

711.22 p.03 GB

explanation

risk of human injury

risk of damaging equipment or environment

additional information or requirements

symbols

!Caution!

Note

!Warning!

3. Special maintenance notes

Opening the safety shut-off valve (SSV)

For opening the SSV main valve push lever ( 53 ) into the corresponding hole in the disc (24), and turn.

711.22 p.04 GB

•

Prior to disassembly all chambers carrying gas media must be depressurised.

4. Special maintenance notes

4.2 Valve flap

close SSV (use manual release)

remove lid (6)

remove disc (24)

loosen screws (51) to release closing springs (26) in the spring housing (25)

Attention: When loosening the screws (51) stick the lever (53) into the hole in the spring housing and

hold tight to prevent the closing spring force from turning the housing whilst unscrewing.

swivel the valve flap (12) outward

When inserting a new greased o-ring

(11)

into the groove of the valve flap

(12),

first press

the ring at 3 - 4 points equally spaced around its circumference into the groove. Then press

the o-ring in completely.

Prior to turning back the valve plate (12), pull T-shaped lever (47)

4.2.1 Exchange of the valve sealing (O-ring item no. 11) in the valve plate (12)

Hint: If the valve flap (12) has been separated from the valve flap lever (10), then tighten the locking nut (14)

with the required torque and secure the nut again using the split pin (16).

Closing the safety shut-off valve (SAV) via manual release

For closing the SSV pull the T-shaped lever (47) upward.

•

4.1 Switch gear

4.1.1 Position of the retaining disc (34) for closed SSV

(standard version)

Bild 1 right-hand-side operation Bild 2 left-hand-side operation

switch gear lid

switching rod

switch gear screw

retaining disc

4.1.2 Mounting the switching rod (37)

When mounting the pre-assembled group consisting of switching

rod (37) / piston (42) / manual release (46) in the retaining holes

of the switch gear lid (39), please observe the position of the

switching screw (48).

Bild 3 Einbaulage der Schaltstange

Danger

Note

711.22 p.05 GB

Closing springs ( 26 )

The spring housing ( 25 ) contains 2 moulded receiving grooves for the closing springs. The

grooves are required for the different mounting of closing springs for "right-hand-side operation"

or "left-hand side operation" designs.

When inserting the closing springs, first place them into the spring housing (25). Note the correct

orientation of the springs as in figures 4 and 5.

The pre-tension of the closing springs is correct when all 4 fastening screws (51) can be fitted

to the housing (approx. half a turn of the spring housing). The valve flap must be in the closed

position.

•

tightening torques (MAin Nm)

DN screw (item no.)

4.3 Screw tightening torques MA

4.4 Lubricants

1 and 4 14 21 49 51 54 1000 1014

25 20 8 8 8 8 20 8 8

50 40 12 8 8 8 20 8 8

80 75 40 8 20 20 20 8 8

100 75 40 8 20 20 20 8 8

figure 5 Orientation of closing springs for

"left-hand" operation

figure 4 Orientation of closing springs for

"right-hand" operation

(standard design)

components lubricants RMG part no.

all O rings, sliding guides,

sliding faces and switch elements silicon grease 00 027 081 (tube 0.1 kg)

all fastening screws

and pipe connections assembly grease 00 028 267

711.22 p.06 GB

sectional view A - A

B - B

valve flap "open"

(only switch device)view X

7 W

11 W

28 W

29 W

28 W

38 W

41 W

M please refer to torque table on page 5!

Wparts to be held in stock for maintenance.

5.1 Spare parts drawing

711.22 p.07 GB

item

no. decription amt. W material DN 25 DN 50 DN 80 DN 100

RMG stock no.

5.2. Spare parts list

1 cylindrical screw 5 St 10 551

1 cylindrical screw 9 St 10 400

1 cylindrical screw 11 St 10 563

1 cylindrical screw 15 St 10 556

2 ring nut 1 St 13 129 13 130 13 137 13 137

3 threaded pin 1 St 12 382 12 043 100 118 100 119

4 hexagonal nut 1 St 5 559 5 692 13 120 13 120

5 safety washer 6 FSt 14 112

5 safety washer 10 FSt 14 113

5 safety washer 12 FSt 14 114

5 safety washer 16 FSt 14 114

6 lid 1 St 10 022 279 10 022 329 10 022 379 10 022 429

7 o-ring 1 W KG 21 141 20 248 20 250 20 457

8 dowel 1 St 17 270 17 270 17 200 17 200

9 body, at option:

9 PN 25 and PN 40 1 GS 10 022 250 10 022 300 10 022 350 10 022 400

9 ANSI 300 RF 1 GS 10 022 253 10 022 303 10 022 353 10 022 403

9 ANSI 300 RJ 1 GS 10 022 254 10 022 304 10 022 354 10 022 404

9 ANSI 600 RF 1 GS 10 022 255 10 022 305 10 022 355 10 022 405

9 ANSI 600 RJ 1 GS 10 022 256 10 022 306 10 022 356 10 022 406

10 valve flap lever 1 St 10 022 263 10 022 313 10 022 371 10 022 421

11 o-ring 1 W KG 20 236 20 458 20 330 20 313

12 valve flap, complete 1 Ms/NSt/St 10 022 262 10 022 312 10 022 357 10 022 407

13 o-ring 1 KG 20 282 20 154 21 224 21 224

14 safety nut 1 St 13 199 13 200 13 202 13 202

15 spring 1 FSt 10 018 394 10 018 394 10 001 262 10 001 262

16 dowel 1 St 15 000 15 000 15 005 15 005

17 metal filter insert 1 St 100 017 100 017 100 017 100 017

18 screw 1 NSt 10 030 024 10 030 024 10 030 024 10 030 024

19 push-button valve RMG 910a 1 10 030 030 10 030 030 10 030 030 10 030 030

20 safety washer 4 FSt 14 111 14 111 14 111 14 111

21 hexagonal nut 4 St 10 181 10 181 10 181 10 181

22 cylindrical scew 1 St 10 618 10 618 8 177 8 177

23 washer 1 St 14 082 14 082 14 137 14 137

24 disc, complete 1 LM/St 10 022 348 10 022 348 10 022 448 10 022 448

WParts to be held in stock for maintenance

Materials key

St ... steel LM ... light alloy SSt ... foam

NSt ... stainless steel Ms ... brass K ... plastic

FSt ... spring steel Cu ... copper KG ... rubbery plastic

NFSt ... stainless spring steel Bz ... bronze KGFP... rubbery plastic with special coating

GS ... steel cast GLM ... light alloy cast FPM ... rubbery plastic material

GGG ... iron cast with spheroidal graphite GMs ... brass cast FP ... special plastic material

GZn ... zink cast AlBz ... aluminium bronze PGL ... plexiglass

GBz ... bronze cast

711.22 p.08 GB

item

no. description amt. W material DN 25 DN 50 DN 80 DN 100

RMG part no.

25 spring housing, complete 1 GLM/K 10 024 535 10 024 535 10 024 635 10 024 635

26 spiral band spring 3 NSt 10 022 336 10 022 336

26 spiral band spring 4 NSt 10 022 436 10 022 436

27 guide bush 1 Ms 10 022 319 10 022 319 10 022 369 10 022 369

28 o-ring 2 W KG 20 227 20 227 20 235 20 235

29 o-ring 2 W KG 21 142 21 142 20 607 20 607

30 feather key 1 St 26 256 26 256 26 241 26 241

31 valve flap rod 1 NSt 10 030 012 10 030 012 10 030 013 10 030 014

32 guide bush 1 Ms 10 022 318 10 022 318 10 022 368 10 022 418

33 housing for switching device 1 LM 10 030 015 10 30 015 10 030 016 10 030 016

34 retaining disc 1 K/NSt 10 030 018 10 030 018 10 030 018 10 030 018

35 washer 1 St 14 127 14 127 14 127 14 127

36 safety nut 1 St 13 200 13 200 13 200 13 200

37 switching rod 1 NSt 10 030 019 10 030 019 10 030 019 10 030 019

38 o-ring 1 W KG 20 664 20 664 20 664 20 664

39 lid for switching device 1 LM 10 030 017 10 030 017 10 030 017 10 030 017

40 circlip ring 1 FSt 19 109 19 109 19 109 19 109

41 o-ring 1 W KG 20 293 20 293 20 293 20 293

42 piston 1 Bz 10 030 020 10 030 020 10 030 020 10 030 020

43 o-ring 1 KG 20 333 20 333 20 333 20 333

44 spring 1 NFSt 100 019 100 019 100 019 100 019

45 spring lid 1 LM 10 030 022 10 030 022 10 030 022 10 030 022

46 rod for manual release 1 NSt 10 030 021 10 030 021 10 030 021 10 030 021

47 T-shaped grip 1 K 100 021 100 021 100 021 100 021

48 screw 1 St 100 018 100 018 100 018 100 018

49 cylindrical screw 4 St 8 177 8 177 10 551 10 551

50 safety washer 4 FSt 14 111 14 111 14 112 14 112

51 cylindrical screw 4 St 10 549 10 549 10 428 10 428

52 safety washer 4 FSt 14 111 14 111 14 112 14 112

53 grip rod, complete 1 NSt/K 10 024 536 10 024 536 10 024 636 10 024 636

54 cylindrical screw 4 St 10 551 10 551 10 551 10 551

55 safety washer 4 FSt 14 112 14 112 14 112 14 112

56 cylindrical screw 4 St 10 642 10 642 10 642 10 642

57 safety washer 4 FSt 14 113 14 113 14 113 14 113

711.22 p.09 GB

5.3 Spare parts drawing additional parts

M please refer to the torque table on page 5!

Wparts are to be held in stock for maintenance.

sectional view A - A

1006

1009

1008/ 1010 1011 1012

1003

W 1002 1005

1006

1005

1004

version with actuator unit RMG 670 and RMG 671

1005

1006

1014

1015

1005

1006

1008/1009

1010

1007 1016 1012 1011 1017 1012 1011

1004 1003 1004

1002

version with actuator unit RMG 670 or RMG 671

1007

(only switching device)

view X

1001

1000

(only switching device)

sectional view A - A

(only switching device)

view X (only switching device)

711.22 p.10 GB

5.4 Spare parts drawing accessories

version with or without electrical indication of valve plate position

version with electromagnetic release

version with electrical

indication of valve “closed”

oeration side "right"

version without

electrical indication

1020 1020

1021 1022 1023 1024

1030

1031

1032

1033

1034/1035

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