http://www.rmg.com/uploads/myth_download/Krysalis_19_-_17.09.2007_01

SERVING THE GAS INDUSTRY WORLDWIDE

Technical Information

The Krysalis 19 – Gas Control Module TM

K19.- 01.09.2007

Bryan Donkin RMG Gas Controls Limited

The Krysalis 19TM – Gas Control Module Product Information

Introduction The Krysalis 19TM contains all the elements of a conventional gas pressure reduction station. The working parts are contained in removable cartridges housed in a steel fabricated body which is installed underground into the gas mains.

Above ground is a ‘Vent Stack’ which contains vent pipes for atmospheric reference pressure and relief valve, alternative Vent Stacks are available to accommodate, various type of instrumentation, including instrument and pressure reference points, DP Gauge and provision for mechanical or electronic pressure recording devices.

Benefits •

Compact Design with all control elements contained within an underground housing.

•

Pressure control connections are automatically made when the cartridges are installed.

•

Straightforward installation – no surface box required.

•

Simplified Planning

•

Separate filter chamber – allows removal of the filter element, without the need to remove the main control unit.

•

Noise levels virtually eliminated

•

Easily adaptable to suite various type of control systems.

•

Totally buried design allows installation in a city or rural location.

Bryan Donkin RMG Gas Controls Limited

K19 – 01.09.2007

2

The Krysalis 19TM – Gas Control Module Product Information

Service Conditions Maximum Inlet Pressure

19 bar g

Minimum Differential pressure

0.5 bar (required for each stage)

Outlet Pressure

0.025 to 8 bar g dependant on the pilot

Configuration

Slam /Active : Monitor /Active : Slam /Monitor /Active

Operation

Single stage Pilot Control

KG value

3000

Relief Valve

LP model: up to 200 mbarg MP model: up to 6 barg HP model: up to 10 barg Up to 14 barg (dependent upon model)

Corrosion Protection

Glass Flake Epoxy

Connections Flanged

PN16 or ASA #150

Sizes

Inlet: DN 100 Inlet: DN 150

Slam Shut Valve

Outlet: DN 200 Outlet: DN 200

Major Components Materials

Materials

Body

Steel: Pipes API 5L Plates to EN10025:S355J2G3

Regulator Cartridge

Aluminium: BS1474 6082 (HE30)

Filter

Stainless Steel 50 Micron

Regulator & Pilot Control Safety Cut-Off Valve - (Over Pressure cut-Off) (combined Over and under pressure cut-off valveUPCO/OPCO – available on request)

Series 850 main regulator(s) Series 600 control pilot (LP, MP & HP) Series 309LP – up to 240 mbarg* Series 309MP – up to 6 barg* Series 309HP – up to 10 barg*

* Encompassing various spring changes

Bryan Donkin RMG Gas Controls Limited

K19 – 01.09.2007

3

The Krysalis 19TM – Gas Control Module Product Information

Typical Capacities in scmh (SG: 0.6) Outlet Pressure

Configuration: Slam/Active Inlet Pressure in barg

1

2

4

7

10

16

19

0.02 barg

2667 iv

3992 iv

4739 ov

4739 ov

4739 ov

4739 ov

4739 ov

0. 2 barg

2667 iv

3992 iv

5565 ov

5565 ov

5565 ov

5565 ov

5565 ov

0.5 barg

2667 iv

3992 iv

6390 G

6943 ov

6943 ov

6943 ov

6943 ov

Note: Capacities shown are based on DN150 inlet and DN200 outlet pipe and reflect pipe work velocity restrictions of 20m/sec inlet and 40m/sec outlet (iv/ov = inlet/outlet velocity, G = Governor limit)

Vent Stack

Typical Installation

Inlet Pressure

Outlet Pressure

Connections

Bryan Donkin RMG Gas Controls Limited

K19 – 01.09.2007

4

The Krysalis 19TM – Gas Control Module Product Information

Sectional Arrangement Widely Used Standard Components Cartridge Type Construction Easy Access for Maintenance

5

Separate Filter Chamber Standard Spares for Major Components

PILOT

SLAMSHUT

CHAMBER

VALVE

ACTIVE CONTROL PRESSURE

FILTER SAFETY

Outlet Vent

COVER

OUTLET

INLET

FILTER

CARTRIDGE

CHAMBER

CHAMBER

TRANSFER

Inlet Pressure

Outlet Pressure

Bryan Donkin RMG Gas Controls Limited

Loading Pressure

Atmospheric Pressure

K19 – 01.09.2007

The Krysalis 19TM – Gas Control Module Product Information

Dimensions & Weights

373

890

517

6

466

1050

Weights: Kg’s

Body Only

273

Regulator Cartridge

18

Slamshut Cartridge

10

Filter Cover

14

Complete Assembly (with covers)

315

Dimensions shown for DN150 x DN200, All Dimensions in mm

The Krysalis 19TM Below Ground Module is one of many gas control products manufactured by Bryan Donkin RMG. With over 200 years experience you can be sure of the ideal solution to meet your requirements ….

Bryan Donkin RMG Gas Controls Limited

K19 – 01.09.2007

SERVING THE GAS INDUSTRY WORLDWIDE

RMG is your worldwide partner for gas control equipment, ranging from exploration to consumer supply. The comprehensive range of RMG products and systems provides you with a total solution for all your gas control and measurement needs.

Modern manufacturing techniques combined with our expertise and specialist knowledge in the design and build of gas control equipment, including fully automated stations has earned RMG a worldwide reputation for supply of safe, accurate and reliable equipment.

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POLAND GAZOMET SP. Z O.O. ul. Sarnowska 2 63-900 Rawicz, Polen Tel +48. 65 546 24 01 Fax +48. 65 546 24 08 The Bryan Donkin RMG Gas Controls policy is one of continuous improvement and development. The company reserves the right to change or introduce improved designs without notice

K19 - 01.09.2007