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Gas Pressure Regulator RMG 505 ™

General Description

505.00 Edition 08/2001

Your competent partner

serving the gas industry - WORLDWIDE

Gas Pressure Regulator RMG 505 Application • for gas supply • for natural gas and all non-corrosive gaseous media

Characteristics • compact construction • active and monitor regulator within one body • active unit with a »fail-open« function • monitor unit with a »fail-closed« function • few pieces, construction easy to maintain

1. Technical data Max. inlet pressure pe max.

100 bar

Outlet pressure range

Wa 0,15 ... 1 bar (active only with RMG 630) 0,5 ... 2 bar (monitor only with RMG 650) 1 ... 5 bar 2 ... 10 bar 5 ... 20 bar 10 ... 40 bar 20 ... 90 bar (with metal harmonica type measuring unit)

Active Unit

two stage version pilot RMG 630 one stage verson pilot RMG 640 for inlet pressure changes less than 15 bar

Monitor Unit

pilot RMG 650

Differential pressure between inlet and outlet

∆pmin = 2 bar ∆pmax = 70 bar

Size (inlet/outlet) and KG-value

DN 50/100 DN 80/150 DN 100/200

Connections

flanged to DIN PN 40 and to ANSI 300, ANSI 600 in RF and RTJ

Temperature range class 2

-20 °C to +60 °C

Function and tightness

acc. to EN 334

2

KG = 1400 m3/h KG = 3600 m3/h KG = 5500 m3/h

Gas Pressure Regulator RMG 505 DIN-DVGW registration no.

NG-4301AS0435

Materials

main valve body

steel cast /steel

main valve internal parts

steel, aluminium alloy, brass

pilot

steel, aluminium alloy

diaphragms

NBR, ECO

gaskets

NBR

Accuracy class for the active unit

accuracy class

outlet pressure range Wh

pilot RMG 630

1 - 3 bar 3 - 5 bar 5 - 90 bar

AC 10 AC 5 AC 2,5

pilot RMG 640

1 - 3 bar 3 - 5 bar 5 - 90 bar

AC 20 AC 10 AC 5

Accuracy class and closing precision category outlet pressure range Wh for the monitor unit pilot RMG 650

1 - 2 bar 2 - 90 bar

accuracy class AC 2,5 AC 2,5

closing precision category SG 30 SG 10

3

Gas Pressure Regulator RMG 505 3. Design and Operation

active-unit closing spring throttling diaphragm expansion piece

pilot RMG 630

filter RMG 905

monitor-unit

valve seat valve sleeve closing spring inlet pressure load limiting pressure

pilot RMG 650

loading pressure outlet pressure atmosphere

The compact device RMG 505 MonitAc consists of two operating units, the first one is responsible for the active control of the outlet pressure, and the second unit for the monitor tasks: The pilot of the active unit (pilot-series RMG 640 or RMG 630a) compares the actual value of the outlet pressure with the setpoint value and drives the movements of the throttling diaphragm. The gas flow is controlled by the rolling movement of the diaphragm on the expansion piece. Thus the outlet pressure remains constant and independant from variations of the inlet pressure and the flow rate. For zero flow, the closing spring presses the diaphragm against the sealing edge.

The outlet pressure is additionally checked by the monitor unit. As the setpoint of this unit is set to an higher value as the controlled pressure of the active unit, the monitor device is normally completely open.

In case of failure, the active unit opens according to the Âťfail-openÂŤ principle, and the outlet pressure rises. The setpoint value of the monitor unit is reached and this unit starts to control the outlet pressure. A valve sleeve which is controlled by the corresponding pilot RMG 650 is used for the gas flow regulation within the monitor unit. The closing force for zero flow is produced by the closing spring, which presses the sleeve against the valve seat.

4

Gas Pressure Regulator RMG 505 3. Dimensions and Weight øE

G C

D

H

B øF

A

Dimensions in mm pipe size inlet/outlet DN 50/100 DN 80/150 DN 100/200 A B C D ØE ØF G H

380 300 267 271 240 262 419 294

550 400 390 360 378 368 440 375

550 400 395 380 378 368 440 375

5

Gas Pressure Regulator RMG 505 3

2

4

1

5 2 3

4

Connections 1 2 3 4 5 6 6

inlet line loading pressure line measuring line breathing line vent pipe (active unit) return-/bleed line (monitor unit)

E 10 E 12 E 12 E 12 E 12 DN 50/100 DN 80/150 DN 100/200

E 12 E 16 E 16

outlet pressure

4. Example of pressure graduation active unit

monitor unit

closing pressure regulating precision

setpoint of monitor-unit

setpoint of active-unit

accuracy class

accuracy class

The outlet pressure to be controlled is set within the pilot of the active unit, RMG 630 or RMG 640.The outlet pressure value of the monitoring unit is governed by the pilot RMG 650 and is adjusted at a higher level than the active outlet pressure setpoint.

At zero flow the outlet pressure rises up to the closing pressure limit of the monitor unit.

6

Gas Pressure Regulator RMG 505 5. Type Description (Example)

RMG 505 - 50/100

-

630

/

2

-

650 /

2

-

So

Type pipe size DN 50/100 DN 80/150 DN 100/200 pilot for active unit RMG 630 RMG 640

50/100 80/150 100/200

630 640

outlet pressure range 0,15 ... 1 bar (only RMG 630) 1 ... 5 bar 2 ... 10 bar 5 ... 20 bar 10 ... 40 bar 20 ... 90 bar pilot monitor unit RMG 650 outlet pressure range 0,5 ... 2 bar (only RMG 650) 1 ... 5 bar 2 ... 10 bar 5 ... 20 bar 10 ... 40 bar 20 ... 90 bar special feature (to be specified)

1 2 3 4 5 6

650

1 2 3 4 5 6 So

7

We supply you with products for gas pressure regulation: 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

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, D-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, D-85560 Ebersberg, Germany Telephone (++49) 8092 2097-0 • Fax (++49) 8092 2097-10

works Beindersheim 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

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

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

Your competent partner

serving the gas industry - WORLDWIDE