SERVING THE GAS INDUSTRY WORLDWIDE

Technical Description

GAS PRESSURE REGULATOR SERIES 240

BRYAN DONKIN RMG GAS CONTROLS LIMITED

GAS PRESSURE REGULATOR SERIES 24

1

GAS PRESSURE REGULATOR SERIES 240

Introduction, Application, Features, Technical Data

Application

• Designed for use on gas pressure reduction services to domestic, business premises and small industrial feeds toburners, heater units, boilers and other items of equipment where an accurate, safe and dependable pressurecontrolled supply is required.

Introduction

• The Series 240 is a direct acting single diaphragm, spring loaded open, lever operated regulator for use on gaspressure reduction systems.

• Control of varying inlet pressure and capacity applications is ensured by utilising a range of interchangeable orifices ofvarying size.

• Use with confidence on natural and manufactured gases of non-aggressive nature, including Nitrogen, Carbon Dioxide,Propane and Butane.

Size Range3⁄4” & 1” Screwed to BS.21 Rc.

Installation

The regulator may be mounted in any orientation to suit site conditions, moisture or debris must not ingress the vent hole. Foroptimum performance the recommended operating position is with diaphragm casing horizontal and spring housing pointingvertically upwards.

It is important when installing equipment that pipeline stresses are kept to a minimum and no undue external forces areplaced on the connections.

Features

• Completely independent operation of regulator andsafety cut-off valve.

• Diaphragm casing can be rotated through 360O relativeto regulator body and can be positioned at any angle toassist servicing and installation in confined spaces.

• Both regulator casing/valve head and safety cut-offvalve can be removed from the body as cartridges,ensuring straightforward maintenance withoutremoving the body from the pipeline.

• Wide operational pressure range• Regulator can be fitted with Over pressure (OPCO) or

Under/Over (UPCO/OPCO) pressure safety cut-offvalve. These devices protect the downstream system inthe event that a dangerous gas pressure conditiondevelops.

SERVICE CONDITIONS

Maximum Inlet Pressure (dependent upon orifice size fitted)

Outlet Pressure Range: Series 240

Series 240 PH

Internal Relief Valve Setting

Temperature Range

Up to 10.3 barg (150psig)

10 to 210 mbar (4” to 84” wg)

70 mbarg to 350 mbarg (28” to 140” wg)

20 mbarg (8” wg)(above regulator outlet pressure set point)

-20OC to +60OC

REGULATOR RANGE

OptionPLRROPCO - MK2S.309LP - OPCOS.309LP UPCO/OPCOPHK-ECLK-ECL-OPCO - MK2

240P•

•••

••

240LR

•

•••

240R

••••

240PH

•

DescriptionNo Internal ReliefWith Limited Internal ReliefWith Internal ReliefMK2 - Standard Over Pressure Cut-Off ValveSeries 309LP Over Pressure Cut-Off Valve (OPCO)Series 309LP Combined Under/Over Pressure Safety Cut-Off ValveHigh outlet pressure model, no internal reliefMonitor with external control line (ECL)As K-ECL with MK2 - Standard Over Pressure Cut-Off Valve

ORIFICE SELECTIONOrifice Size Maximum Inlet Pressure

mm bar 2.5 10.3 3.5 8.65.0 6.0 6.3 6.0 7.0 3.0 9.0 2.5 / 2.0*

12.5 1.5 / 1.0*

GAS PRESSURE REGULATOR SERIES 240

2

Spring Selection, Materials of Construction

REGULATOR SPRING RANGES (SERIES 240)Spring Outlet Pressure Range

Number Colour mbar g ins wg126* Red 10 - 20 4 - 6131* Self 15 - 35 6 - 14127 Green 25 - 43 10 - 17128 Orange 38 - 67 15 - 26392 White 40 - 75 16 - 30393 Blue 70 - 140 28 - 56394 Grey 140 - 210 28 - 84

S.309LP-OPCO SAFETY CUT-OFF VALVESpring Cut-Off Range

Number Colour mbar g ins wg861 Brown 35 - 90 14 - 36

1103 Gold 80 - 130 32 - 521104 Purple 120 - 250 48 - 1001105 Black 200 - 350* 80 - 140

MATERIALS OF CONSTRUCTIONRegulatorBody & body cover Cast iron to BS 1452 Lower/Upper diaphragm casing & spring housing Aluminium Alloy: BS.1490Diaphragm carrier and vent plate Nylon 11Vent pin, spring and gauze ring Stainless Steel: BS.970Orifice Brass: BS.249Valve seat & ‘O’ rings NitrileDiaphragm NitrileValve head, stem, spring adjuster and cap Aluminium: BS. 1476Lever, pins, diaphragm plate and spindle Carbon Steel: BS.4360 (Anti-corrosion plated)Safety Cut-Off Valve (MK2)Lower/Upper diaphragm casing & spring housing Aluminium Alloy: BS.1490Diaphragm, spindle and reset spindle Stainless Steel: BS.970 (Nylon bearing surface)Diaphragm plate, pins, loading & valve spring Carbon Steel: BS.4360 (Anti-corrosion plated)Diaphragm and ‘O’ rings Nitrile and VitonValve seat PolyurethaneS.309LP UPCO/OPCO Safety Cut-Off ValveBody Aluminium: BS.1490 LM6Spindle Stainless Steel: BS.970 Grade 316 S31Valve Aluminium: BS.1474 Grade 6082TFValve Seating Polyurethane: BS.1449 CS4Diaphragm & ‘O’ rings NitrileSpring Adjuster Brass: BS.249 Grade CZ 121Spring Spring Carbon Steel: BS.5216 Grade HS3

*Maximum Over pressure set point: 260mbar (104” wg) on S.240 regulator

* Use lower pressure when using spring no’s 126 & 131

Minimum differential between regulator outlet and safetycut-off pressure:• P-Type: 35 mbar (14” wg) or 10% above regulator set point,

whichever is the higher• R/LR - Type: 55 mbar (22” wg) when internal relief fitted• When UPCO/OPCO is fitted then minimum differential for

P-Type is 45 mbar (18” wg) and 65 mbar (26” wg) for R/LR-Type (with internal relief)

OPCO

REGULATOR SPRING RANGES (SERIES 240PH)Spring Cut-Off Range

Number Colour mbar g ins wg394 Grey 70 - 210 28 - 84

1166 Yellow 140 - 350 56 - 140

OPCO MK2: Over Pressure Cut-Off ValveSpring Cut-Off Range

Number Colour mbar g ins wg861 Brown 35 - 70 14 - 28868 Green 60 - 175 24 - 70869 Silver 160 - 260 64 - 104

S.309LP UPCO/OPCO SAFETY CUT-OFF VALVESpring Cut-Off Range

Number Colour mbar g ins wg1109 Grey 40 - 55 16 - 221110 Green 50 - 110 20 - 441111 Silver 110 - 200 44 - 801104 Silver/Red 150 - 240 60 - 96

UPCO 1138 Blue/Green 10 - 30 4 - 12

3

GAS PRESSURE REGULATOR SERIES 240

Capacities in SCMH for Natural Gas (SG: 0.6)

CAPACITIES

mbar20254569

2073456901 bar1.52.02.53.04.06.07.08.08.6104569

2103456901 bar1.5

4569

2103456901 bar1.5

692103456901 bar1.52.02.53.04.06.07.08.08.610

2103456901 bar1.52.02.53.04.06.07.08.08.610

2103456901 bar1.52.02.53.04.06.07.08.08.610

1.21.83.06.27.8

10.412.615.017.020.829.735.741.046.746.7

1.52.54.36.28.4

10.8

2.44.26.98.4

10.6

1.22.43.46.69.1

11.114.015.618.620.432.343.248.752.452.41.02.55.16.69.1

10.913.214.918.326.534.745.345.345.31.62.95.07.19.1

10.912.814.718.326.532.639.540.440.4

2.44.45.89.8

13.819.526.431.034.737.438.340.246.046.0

2.44.26.48.6

12.419.0

5.56.9

10.414.620.1

1.73.24.88.5

11.715.019.523.525.632.659.565.165.165.1

3.36.29.8

13.318.322.527.430.637.448.052.465.165.1

2.84.88.9

10.613.615.020.423.531.040.045.751.752.4

1.92.53.76.08.8

15.819.138.244.646.751.051.051.0

2.23.16.18.3

15.318.936.8

2.86.18.3

15.318.936.8

2.03.75.69.6

15.929.735.743.244.746.865.1

4.17.0

12.917.324.934.742.944.744.950.4

2.95.0

11.914.224.130.233.835.138.542.1

2.42.53.45.16.7

12.222.925.551.051.051.051.051.051.0

2.84.16.4

11.521.725.551.0

2.23.86.4

11.521.725.551.0

3.86.2

10.115.219.337.144.351.558.658.658.6

7.412.016.320.329.440.147.455.255.255.2

4.68.0

14.116.230.035.442.345.4

2.52.74.05.58.9

14.424.230.451.051.051.051.0

3.05.09.0

14.322.130.151.0

2.44.48.4

13.426.537.151.0

4.06.6

12.717.726.742.150.465.173.6

7.812.317.723.235.040.748.857.2

5.08.7

17.420.036.240.446.250.8

2.83.44.66.5

11.317.535.441.051.051.0

4.05.7

10.916.931.340.251.0

3.05.2

10.916.736.543.851.0

5.29.7

14.024.136.447.673.673.6

10.014.629.236.248.560.573.6

6.611.423.429.743.046.761.2

4.14.86.48.7

21.731.951.0

5.48.3

17.826.848.4

4.27.6

17.826.848.4

6.915.122.441.954.7

15.023.940.353.8

11.019.033.645.7

Inlet PressureSpring No. and Outlet Pressure

SPRINGNo. 126

10-20 mbar

SET TO15 mbar

DROOP2.5 mbar

SPRINGNo. 392

40-75 mbar

SET TO60 mbar

DROOP9.5 mbar

SPRINGNo. 131

15-35 mbarSET TO

25 mbarDROOP

3.7 mbar

SPRINGNo. 127

25-43 mbarSET TO

37.5 mbarDROOP

5.6 mbar

SPRINGNo. 393

70-140 mbar

SET TO105 mbar

DROOP16 mbar

SPRINGNo. 394

140-210 mbar

SET TO175 mbar

DROOP26 mbar

Orifice Size - Millimetres2.5 3.5 5 6.3 7 9 12.5

2 - 10 BAR CAPACITIES IDENTICAL TO THOSE FOR SPRING NO 126 GIVEN ABOVE

2 - 10 BAR CAPACITIES IDENTICAL TO THOSE FOR SPRING NO 126 GIVEN ABOVE

Type of Gases: The capacities shown in the table are given interms of natural gas SG 0.6. For all other gases multiply by the following correctionfactor:

0.6SG of gas handled

4

GAS PRESSURE REGULATOR SERIES 240

Dimensions & Weights, Sectional Arrangement

3⁄4” & 1” 153 - 40 102 172 - 270 - 145 205 2.53⁄4” & 1” c/w Mk2 OPCO 153 76 - 102 172 108 270 165 145 205 2.83⁄4” & 1” c/w S.309LP OPCO 153 100 - 102 172 115 270 230 145 205 3.23⁄4” & 1” Series 240PH 153 - 41 102 172 - 270 - 165 205 3.25

A B C D E F G H J K WT.KgSize & Model

Sectional Arrangement

Inlet Pressure Outlet Pressure Atmospheric Pressure

Safety Cut-OffValve

ResetValve

Outlet PressureTest Nipple

InterchangeableSprings

3/4” NPT VentConnection

InternalRelief Valve(Optional)

LightweightCartridge Design Union Connector

INLET

A

G

D

C

JK

1⁄8” Rc Vent

1⁄8” Rc ECL

3⁄4” NPT Vent

EØ FØ

H

B

Minimum service height

Minimum for service Minimum for reset & service

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 andsystems 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.

WWW.RMG.COM

GERMANY

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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.

R.240-01.01.08