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Gas Pressure Regulator RMG 330

General Description

330.00 Edition 06/2001

Serving the Gas Industry - WORLDWIDE

Gas Pressure Regulator RMG 330 Contents 1. Technical data ...........................................................................................................................................

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2. Dimensions ...............................................................................................................................................

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3. Operation ..................................................................................................................................................

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4. Type description .......................................................................................................................................

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Gas Pressure Regulator RMG 330 Application • for domestic and industrial applications • suitable for regulation systems requiring quick response (gas furnaces) • for natural gas and all non-corrosive gaseous media

Characteristics • large inlet pressure range • can be provided with various valve seats of different sizes • valve with inlet pressure compensation • with or without incorporated safety shut-off valve (SSV) • diaphragm assembly provided with safety relief valve (SBV) for gas leakages or with additional safety diaphragm • easy maintenance due to interchangeable cartridge assemblies (plug-in system) • noise attenuation by fitting metal foam as an optional feature

1. Technical data

max. inlet pressure pemax admissible operating pressure

16 bar 16 bar

outlet pressure range Wa

in mbar

spring no./colour

20 to 30 25 to 50 45 to 100 90 to 200 150 to 300 250 to 400 350 to 500 450 to 600 550 to 800 650 to 1000

0 / blue 1 / grey 2 / yellow 3 / brown 4 / bright red 5 / dark red 6 / light blue 7 / white 8 / green 9 / black

accuracy class (AC) and lock-up pressure class (SG)

AC ≥ 2.5 SG ≥ 10

sizes

DN 25, DN 50, DN 80, and DN 100

wire dia. in mm for measuring unit size 1 size 2 3.6 4.0 4.5 5.3 6.3 7.0 7.5 8.5 9.5 10.5

5.0 6.3 7.0 8.0 9.0 10.0 11.0 12.0 13.0 14.0

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Gas Pressure Regulator RMG 330 connections

flanged to DIN PN 16

materials

valve body and SSV diaphragm casing internal parts diaphragm, gaskets

aluminium alloy sheet steel aluminium, brass, steel synthetic rubber (NBR)

ambient temperature range class 2

-20°C to +60°C

function and strength

according to DIN EN 334, DIN 3381

PED/CE and DIN-DVGW

approved

Valve data SSV type RMG 720 K1a, K4 and K5

measuring unit

setpoint spring

K1A

K4

K5

no.

1 2 3 4

colour

yellow bright red dark red white

wire dia. in mm

2.5 3.2 3.6 4.75

5 light blue 6 white 7 black

1.1 1.2 1.4

2 bright red 3 dark red 4 black

3.2 3.6 4.5

5 light blue 6 black

1.1 1.4

5 dark red 6 black

3.6 4.5

5 light blue 6 black

1.1 1.4

overpressure release re-engagement differential between response pressure and normal adjustable service pressure

response range (bar)

0.05…0.1 0.08…0.25 0.2 …0.5 0.5 …1.5

∆p 0 (bar)

underpressure release

adjustable response range (bar)

between upper and lower response pressure with spring no.5

0.07 0.09 0.14 0.31

0.045 0.055 0.085

0. 55 0. 65 0.095

0.17 0.27

0.20 0.30

0.03 0.06

*) The higher value is valid for the first half, the lower value is valid for the second half of the adjusting range.

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0.13 0.18 0.33

10/5 10/5 5/2.5 5/2.5

5/2.5 2.5 2.5/1 15/5 10/5

0.01 0.02

0.10 0.20

no.7

15 15/5 5

0.012 0.03 0.06

0.02 0.03 0.06

0.015…0.05 0.04 …0.12

no.6

AG* response precision category

(bar) 0.05 0.07 0.12 0.29

0.005…0.02 0.015…0.06 0.20…0.80 0.60…1.50

re-engagement differential

∆p u (bar)

0.03 0.05 0.10 0.25 0.01 …0.015 0.014…0.04 0.035…0.12

0.04…0.10 0.08…0.25 0.20…0.50

re-engagement differential between response pressure and normal service pressure

2.5 2.5/1 15/5 10/5

Gas Pressure Regulator RMG 330 Safety relief valve (SBV) for gas leakages (integrated in diaphragm assembly as an optional feature) diaphragm assembly size

spring no.

wire dia. in mm

adjusting range > pa

1 1

1 2

3.5 5

10 mbar to 100 mbar > pa 75 mbar to 300 mbar > pa

2 2 2

1 2 3

3 3.6 4.5

fixed adjustment 15 mbar > pa fixed adjustment 40 mbar > pa fixed adjustment 130 mbar > pa

safety diaphragm as an optional feature, for diaphragm assembly size 1, to be mounted with setpoint springs no. 1 to no. 6 (20 mbar ... 500 mbar).

Valve data size

valve seat dia. in mm

flow rate coefficient KG (for natural gas, ρn=0,83 kg/m3)

DN 25

20 33

200 420

16 (16) 10 (16)

200

DN 50

20 33

200 500

16 (16) 10 (16)

230

25 31 41 50

400 850 1400 1750

16 (16) 10 (16) 8 (16) 5 (10)

25 31 41 50 60 80 100

400 850 1400 1750 3000 4200 4700

DN 80

DN 100

inlet pressure range ∆ pe * in bar for diaphrahgm assembly (max. inlet pressure in brackets) size 1 size 2

16 (16) 16 (16) 16 (16) 10 (16) 16 (16) 16 (16) 16 (16) 10 (16) 10 (16) 6 (12) 4 (8)

face to face dimensions (mm)

420

500

* The accuracy class and the lock-up pressure class stipulated by the DVGW type tests are confirmed under the following conditions: "The inlet pressure may exceed the ∆ pe-figure stated in the table at the most by twice its value, provided the inlet pressure deviations ∆ pe does not exceed the p emax-value stated in the table. However, it may not exceed the nominal pressure rating."

The limitation of the inlet pressure range ∆ pe for a diaphragm assembly is not given for reasons of material strength but in the interest of maintaining the regulating accuracy.

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Gas Pressure Regulator RMG 330 2. Dimensions

measuring line

vent

measuring

line

line SSV

Dimensions in mm main valve body

safety shut-off device size 1

DN

A

B

C

D*

E

ØF

G

25

200

66

66

350

230

max.

385

50

230

77

77

80

420

165

127

580

360

max.

100

500

175

150

580

330

180

regulator with diaphragm assembly size 2

ØH

J*

ØH

J*

600

395

710

510

130 450

297

560

690

*) dimension for dismantling

Weight in kg regulator with diaphragm assembly size 1

6

G

size 2

DN

with SSV

25

10.5

without SSV 9.5

-

with SSV

without SSV -

50

12

11

-

-

80

28

21

42

35

100

-

-

46

39

860

Gas Pressure Regulator RMG 330

measuring line

B

measuring vent

line SSV

line

Line connections diaphragm assembly size 1

diaphragm assembly size 2

diaphragm assembly: measuring line vent line

connection* of: pipe 12 x 1.5 (pipe 12 x 1.5 at SSV) pipe 12 x 1.5 (thread R 1/2")

connection* of: pipe 16 x 2 (pipe 16 x 2 at SSV) pipe 12 x 1.5 (thread R 1/2")

control element of SSV measuring line SSV vent line

connection* of: pipe 12 x 1.5 (thread M 16 x 1.5) pipe 12 x 1.5 (thread M 16 x 1.5)

connection* of: pipe 12 x 1.5 (thread M 16 x 1.5) pipe 12 x 1.5 (thread M 16 x 1.5)

*) pipe screw joints without brazing in accordance with DIN 2353, with the exception of the diaphragm assembly vent line connection

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Gas Pressure Regulator RMG 330 3. Operation

regulating assembly setpoint adjusting screw

inlet pressure outlet pressure

setpoint spring

atmosphere leakage relief valve SBV measuring diaphragm compensating diaphragm final control element

control element of SSV SSV diaphragm ball release mechanism setpoint springs SSV measuring unit

RMG 330, DN 25 and DN 50 This gas pressure regulator was designed to keep the outlet pressure of a gaseous medium constant in the mains and independent of disturbing influences like inlet pressure and/or flowrate changes.

The RMG 330 consists of a main valve body and the units "regulator" and "safety shut-off valve" (SSV measuring unit). Both units can easily be removed from the body by loosening the connection screws. This advantage of easy maintenance offers the following possibilities: For regular maintenance the parts of the regulator and shut-off control elements can be taken out of the body and easily subjected to a visual inspection. In case of failure the

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regulator and shut-off units can be replaced by spare units, and the repair works can be carried out in the workshop without having to shut down the system.

A compensating diaphragm ensures pressure balance at the control element of the regulator main valve which can be equipped with orifices of various sizes. The regulating assembly can be equipped with a leakage relief valve (SBV) as an optimal feature.

The outlet pressure to be controlled is fed to the diaphragm assembly via the measuring line.

Gas Pressure Regulator RMG 330 regulating assembly setpoint adjusting screw setpoint spring leakage relief valve SBV measuring diaphragm compensating diaphragm final control element

control element of SSV SSV diaphragm ball release mechanism setpoint springs SSV measuring unit

RMG 330, DN 80 and DN 100 The measuring diaphragm takes up the actually prevailing outlet pressure and compares it to the setpoint value preadjusted and given by the force of the setpoint spring. Any deviation of the outlet pressure from the setpoint will cause a corresponding change of the valve stem position, and the resulting change in flow rate will re-adjust the outlet pressure to the setpoint.

The SSV measuring diaphragm and switching bush then moves into the release position, and the ball mechanism sets the valve stem free to close the SSV valve. The safety shutoff valve can be re-opened by hand only, after the outlet pressure at the measuring point has been restored to a value below the re-engagement differential (after a preceeding overpressure release) or to a value above the re-engagement differential (after a preceeding underpressure release).

The regulator gives tight shut-off on zero flow.

The control element of the safety shut-off valve (SSV) installed in the inlet side of the body cuts off the gas flow if the outlet pressure in the main rises above or falls below preset limits.

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Gas Pressure Regulator RMG 330 RMG 330 - 50 - K1 / E1 / HA / F - 33 / 1 / 1 - So

4. Type description (example)

l) ize etai d s. s as ed in m ifi e c rag alv e ize iaph e spe fv s s o a d y t l b e i n r l , b . n o ete e o ati em g no re (t g u ic r n u rin et se dic iam ss su agn relea te in at d gm a t spri feat a e om al o se ra in ial V m ctr nu rem alve iaph etpo pec s SS ele ma el. d s v itio

s po

size DN 25 DN 50 DN 80 DN 100 DN / SSV measuring unit 25 ... 50 K1A 80 K4 80 K5 100 K4 100 K5

RMG stock no. for body 10 004 852 10 004 850 10 009 031 10 009 104 adjustment range in bar Who

Whu

0.050 to 1.5 0.040 to 0.5 0.200 to 1.5 0.040 to 0.5 0.200 to 1.5

0.010 to 0.120 0.005 to 0.060 0.015 to 0.120 0.005 to 0.060 0.015 to 0.120 release upon current supply

N

eD siz 25 50 80 100

RMG stock no.

10 010 590 10 008 332 10 008 352 10 008 333 10 008 353

K1A K4 K5 K4 K5

electromagnetic release E1 for K1A, K4, K5 manual release by contact valve RMG 912 HA for K1A, K4, K5 F electric remote indication of valve position "closed" for K1A, K4, K5 valve seat diaphragm RMG stock no. with safety diaphragm standard type diameter assembly DN 25 and 50

20 33 25 31 41 50 DN 80 25 31 41 50 25 31 41 DN 100 50 60 80 100

1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 2 2

Wa 0.020..0.5

Wa 0.020..0.5

Wa 0.5..1 bar

with safety diaphragm: 1SM

10 004 802 10 004 812

10 004 835 10 004 836

with safety diaphragm: 1SM

10 004 834 10 004 813 10 004 814 10 004 817

10 006 152 10 009 027 10 009 028 10 009 029 10 006 179 10 009 016 10 009 026 10 009 170 10 006 179 10 009 016 10 009 026 10 009 126 10 009 170 10 009 171 10 009 172

10 004 840 10 004 841 10 006 153 10 009 023 10 009 024 10 009 025 10 006 180 10 009 019 10 009 018 10 009 017 10 006 180 10 009 019 10 009 018 10 009 017 10 009 173 10 009 174 10 009 175

with leakage relief valve: 2 L

setpoint spring no.

0 blue 1 grey 2 yellow 3 brown 4 light red 5 dark red 6 light blue 7 white 8 green 9 black

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with leakage SBV: 2 L

outlet pressure range 20 to 30 mbar 25 to 50 mbar 45 to 100 mbar 90 to 200 mbar 150 to 300 mbar 250 to 400 mbar 350 to 500 mbar 450 to 600 mbar 550 to 800 mbar 650 to 1000 mbar

"

ed

os

cl n"

20 33 25 31 41 50 25 31 41 50 25 31 41 50 60 80 100

with diaphragm assembly/RMG stock no. size 1 size 2 10 007 241 19 083 654 10 003 629 10 009 068 10 003 630 10 009 069 10 003 631 10 009 070 10 003 632 10 009 071 10 003 633 10 009 072 10 003 634 10 009 073 10 012 563 10 009 163 10 012 564 10 009 164 10 004 894 10 009 165

1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 2 2

0 1 2 3 4 5 6 7 8 9

Gas Pressure Regulator RMG 330

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We supply you with products for gas pressure regulation: RMG REGEL + MESSTECHNIK GMBH Osterholzstrasse 45, 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, 15517 Fürstenwalde, Germany Telephone (++49) 3361 356-60 • Fax (++49) 3361 356-836 gas pressure regulating equipment, displacement meters, complete stations

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, underground compact units

Bryan Donkin RMG Canada Ltd. 50 Clarke Street South, Woodstock, Ontario N4S 7Y5, Canada Telephone (++1) 519 5398531 • Fax (++1) 519 5373339 domestic regulators and safety devices

The other RMG Companies RMG Messtechnik GmbH Otto-Hahn-Strasse 5, 35510 Butzbach, Germany Telephone (++49) 6033 897-0 • Fax (++49) 6033 897-130 turbine meters, vortex meters, correctors, flow computers, odorizers

Karl Wieser GmbH Anzinger Strasse 14, 85560 Ebersberg, Germany Telephone (++49) 8092 2097-0 • Fax (++49) 8092 2097-10

works Beindersheim Heinrich-Lanz-Strasse 9, 67259 Beindersheim/Pfalz, Germany Telephone (++49) 6233) 3762-0 • Fax (++49) 6233 3762-40 data logging, monitor systems, danger alarm systems

WÄGA Wärme-Gastechnik GmbH Osterholzstrasse 45, 34123 Kassel, Germany Telephone (++49) 561 5007-0 • Fax (++49) 561 5007-207 design and assembly of gas pressure regulating and metering stations

Die RMG Group of Companies on the internet: http://www.rmg.de

Your competent partner

serving the gas industry - WORLDWIDE