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Installation
27
70458101 (EN)
CE Orifices
Table 2
Properties of CE Gases
Gas
Type
Gas
Family Group
Gas
Designation
Supply
Pressure,
mbar
Manifold Pressure
Capacity/
Model
Orifice
Diameter
(mm)
Orifice
Part
Number
Quantity
mbar
in. wc
Natural
Gas
Second
I
2H(E)
G20
20 / 25
8.9
3.57
120
4.3
M402988
3
170
4.7
M411510
4
200
4.8
M411372
4
I
2L
G25
25
12.6
5.06
120
4.3
M411373
3
170
4.7
M411510
4
200
4.8
M411372
4
I
2E+
G20
20
Unregulated Unregulated
120
3.6
M401014
3
170
3.8
M402997
4
200
3.9
M401020
4
LP
Third
I
3B/P
G30
28 / 30
Unregulated Unregulated
120
2.5
M406361
3
170
3.0
M401017
3
200
3.1
70070903
3
G30
37 / 50
30
12.05
120
2.5
M406361
3
170
3.0
M401017
3
200
3.1
70070903
3
I
3+ / 3P
G30 / G31
28 / 37
Unregulated Unregulated
120
2.5
M406361
3
170
3.0
M401017
3
200
3.1
70070903
3
Wi
Hi
Ws
Hs
d
Gas
Type
Gas
Family Group
Gas
Description
Gas
Designation
Wobbe Index
(Net)
Heating Value
(Net)
Wobbe Index
(Gross)
Heating Value
(Gross)
Density
MJ/m
3
Btu/ft
3
MJ/m
3
Btu/ft
3
MJ/m
3
Btu/ft
3
MJ/m
3
Btu/ft
3
Natural
Gas
Second
I
2H,E
Not
Applicable
G20
45.67
1226
34.02
913
50.72
1362
37.78
1014
0.555
I
2E+
2H
I
2L
Not
Applicable
G25
37.38
1004
29.25
785
41.52
1115
32.49
872
0.612
I
2E+
2L
LP
Third
I
3B/P
Not
Applicable
G30
80.58
2164
116.09
3117
87.33
2345
125.81
3378
2.075
I
3+
Pure Butane
I
3+
Pure Propane
G31
70.69
1898
88
2363
76.83
2063
95.65
2568
1.55
I
3P
LPG with
Propane
Table 3