SERVING THE GAS INDUSTRY WORLDWIDE
Technical Description
GAS PRESSURE REGULATOR SERIES 2 204
BRYAN DONKIN RMG GAS CONTROLS LIMITED
GAS PRESSURE REGULATOR SERIES 204 Introduction, Application, Features, Technical Data Introduction • The Series 204 is a high pressure Externally Impulsed (ECL) direct acting, diaphragm actuated, lever operated, spring loaded open regulator for use on gas pressure reduction systems. The regulator can also be fitted with an independently operated Safety Cut-Off Valve for Over and Under/Over pressure protection. • Control of varying inlet pressure and capacity applications is ensured by utilising a range of interchangeable orifices of varying size. • Use with confidence on natural and manufactured gases of non-aggressive nature, including Nitrogen, Carbon Dioxide, Propane and Butane.
1
Application • Designed specifically for safe accurate first stage reduction on high pressure gas systems. Extensively used for gas services to domestic, industrial and farm taps where an accurate, safe and dependable pressure controlled supply is required. Features • Diaphragm casing can be rotated through 360O relative to regulator body and can be positioned at any angle to assist servicing and installation in confined spaces. • Completely independent operation of regulator and safety cut-off valve. • Both regulator casing/valve head and safety cut-off valve can be removed from the body as cartridges, ensuring straightforward maintenance without removing the body from the pipeline. • Wide operational pressure range • Rapid response to load changes. • Wide range of orifice sizes - Interchangeable in situ. Size Range 1
⁄ 2”, 3⁄4” and 1” Screwed to BS.21 Rc. Installation
SERVICE CONDITIONS Maximum Inlet Pressure (dependent upon orifice size and safety cut-off valve fitted)
• Regulator can be fitted with the Series 309 or 315 Overpressure (OPCO) or Under/Over pressure (UPCO/OPCO) Safety Cut-Off valve. These devices protect the downstream in the event that a dangerous gas pressure condition develops. All safety cut-off valves require External Control Line connection.
Regulator only
Up to 69 barg
Regulator & Series 309 OPCO or UPCO/OPCO
Up to 10 barg
Regulator & Series 315 OPCO or UPCO/OPCO
Up to 69 barg
• Trip indicator to show Open/Closed condition.
Outlet Pressure Range
0.21 to 13.8 barg
• Remote Open/Closed position sensor.
Temperature Range
-20OC to +60OC
Installation The regulator may be mounted in any orientation to suit site conditions, moisture or debris must not ingress the vent hole. It is important when installing equipment that pipeline stresses are kept to a minimum and no undue external forces are placed on the connections.
GAS PRESSURE REGULATOR SERIES 204 Spring Selection, Materials of Construction SPRING SELECTION: SERIES 204 REGULATOR Spring Outlet Pressure Range Number
Colour
bar
psi
261
Yellow
0.2 - 0.82
3 - 12
262
Aluminium
0.69 - 1.72
10 - 25
263
White
1.38 - 4.13
20 - 60
264
Tan
3.45 - 8.6
50 - 125
265
Grey
6.9 - 13.8
100 - 200
266
Dark Green
0.69 - 6.9
10 - 100
Minimum OPCO & UPCO/OPCO Settings: • Minimum Overpressure setting: 35 mbar (14” wg) or 10% above regulator outlet setting, whichever is the greater value • Minimum Under Pressure setting: 20 mbar (8” wg) or 10% below regulator outlet setting, whichever is the greater value • Minimum Differential pressure between UPCO & OPCO setting: 80 mbarg (32” wg) ORIFICE SELECTION Orifice Size
ins 1 ⁄8 3 ⁄16 1 ⁄4 5 ⁄16 3 ⁄8 1 ⁄2
mm 3.17 4.76 6.35 8.0 9.5 12.7
Maximum Inlet Pressure With S.309 With S.315 Regulator Safety Safety Only Cut-Off Valve Cut-Off Valve bar psi bar psi bar psi 69 1000 10 145 69 1000 69 1000 10 145 69 1000 34.5 500 10 145 34.5 500 27.5 400 10 145 27.5 400 20.7 300 10 145 20.7 300 7 101.5 7 101.5 7 101.5
SPRING SELECTION: S.309 SAFETY CUT-OFF VALVE Model Type Spring Cut-Off Range Number Colour bar psi 1132 White/Blue 0.5 - 0.8 7.2 - 11.6 1133 White/Red 0.7 - 1.1 10.1 - 16 309-MP2 OPCO 1134 White Grey 1.0 - 1.8 4.5 - 26.1 1135 White/Brown 1.5 - 2.9 21.7 - 42 UPCO 1104 Purple 0.05 - 0.15 0.72 - 2.16 309-MP4 OPCO 1192 White/Purple 2-4 29 - 58 UPCO 1104 Purple 0.05 - 0.15 0.72 - 2.16 Note: Maximum Inlet Pressure for S.309 is 10 bar (145 psi) SPRING SELECTION: S.315 SAFETY CUT-OFF VALVE Model Type Spring Cut-Off Range Number Colour bar psi 1132 White/Blue 0.5 - 0.8 7.2 - 11.6 1133 White/Red 0.7 - 1.1 10.1 - 16 OPCO 1134 White Grey 1.0 - 1.8 14.5 - 26.1 1135 White/Brown 1.5 - 2.9 21.7 - 42 315-MP2 1104 Purple 0.05 - 0.15 0.72 - 2.16 1105 Black 0.1 - 0.3 2.1 - 3.6 UPCO 1255 Green 0.25 - 0.7 2.9 - 8.1 1028 Black/White 0.64 - 1.6 9.3 - 16 OPCO 1192 White/Purple 2-4 29 - 58 1104 Purple 0.05 - 0.15 0.72 - 2.16 315-MP4 UPCO 1105 Black 0.1 - 0.3 2.1 - 3.6 1255 Green 0.25 - 0.7 2.9 - 8.1 1028 Black/White 0.64 - 1.6 9.3 - 16 OPCO 1197 Blue 3 - 14 43.5 - 203 1104 Purple 0.12 - 0.47 1.73 - 6.78 315-HP UPCO 1105 Black 0.45 - 0.82 6.5 - 11.8 1255 Green 0.6 - 1.8 8.7 - 26 1028 Black/White 2 - 3.5 29 - 50
MATERIALS OF CONSTRUCTION Regulator Body, Lower Diaphragm Casing, Spring Housing
Ductile iron to BS EN 1563 Grade EN-GJS-400-18
Orifice & Valve Stem
Brass: BS 2784 CZ121
Top Cap, Diaphragm Carrier, Valve Head
Aluminium: BS 4300/5 FC1
Diaphragm, ‘O’ Rings, Valve Disc
Nitrile
Adjusting Screw & Spring Carrier
Mild Steel: BS 970 070M20 zinc Plated
Spring
Spring Steel: BS 5216
Safety Cut-Off Valve Component
Series 309
Series 315
Body
Aluminium: BS 1490 LM6
Plated Carbon Steel: BS 970 220M070
Valve Spindle
Stainless Steel: BS 970 316S31
Stainless Steel: BS 970 316S31
Valve Seating
Polyurethane
Polyurethane
Nitrile Reinforced -
Nitrile: EN 278 Epichorhydrin
Latch & Spring Adjuster
Brass: BS 2874 CZ121
Brass: BS 2874 CZ121
Rollers
Stainless Steel: DIN X90 CRMOV18
Stainless Steel: AISI 440C
Diaphragm:
MP HP
Diaphragm Plates
Aluminium: BS 1474 HE 30
Aluminium: BS 1474 2011
Springs
Spring Steel: BS 1408
Coated Spring Steel: BS 5215 HS3
Top Casing
Aluminium: BS 1474 HE 30
Plated Carbon Steel: BS 970 220M070
2
GAS PRESSURE REGULATOR SERIES 204 Sectional Arrangement
Adjusting Screw
3
Interchangeable Springs Vent Rc 1⁄2 Union Connector
INLET
ECL Connection Rc 1⁄4
Ductile Iron Body Interchangeable Orifices Inlet Pressure
Outlet Pressure
Atmospheric Pressure
GAS PRESSURE REGULATOR SERIES 204 Dimensions & Weights
H
Ø
F
4 G E 35mm
Vent Rc1⁄2
Series 204
K A
ØJ A /2
D
C
B
External Impulse Connection RC 1⁄4
Model
A
Regulator only 102
B
C
D
E
F
G
H
J
K
MP2
MP4
HP
-
-
-
127
108
256
111
280
153
-
-
Weight Kg MP2
MP4
7
-
-
HP -
With S.309
102
225
225
-
127
108
256
111
280
153
110
345
-
9
9.2
-
With S.315
102
345
345
365
127
108
256
111
280
153
110
485
-
15
15
15
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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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.204-01.01.08