Type MR105
7
Table 5.
Wide-Open Flow and IEC Sizing Coefficient
LINEAR CAgE
Body Size
Wide-open Flow Coefficient
IeC Sizing Coefficient
Line Size Equals Body Size
C
1
K
m
F
L
x
T
F
d
NPS
DN
C
g
C
V
1
25
463
13.7
34.0
0.81
0.90
0.73
0.36
2
50
761
22.5
33.8
0.75
0.87
0.72
0.24
3
80
997
30.5
32.7
0.78
0.88
0.68
0.22
4
100
934
27.5
34.0
0.77
0.88
0.75
0.18
QUICK OPENINg CAgE
Body Size
Wide-open Flow Coefficient
IeC Sizing Coefficient
Line Size Equals Body Size
C
1
K
m
F
L
x
T
F
d
NPS
DN
C
g
C
V
1
25
597
17.5
34.1
0.81
0.90
0.73
0.43
2
50
1740
48.2
36.1
0.81
0.90
0.82
0.34
3
80
3540
103.1
34.4
0.76
0.87
0.75
0.32
4
100
4300
135.9
31.6
0.72
0.85
0.65
0.30
REDUCED PORT QUICK OPENINg CAgE
Body Size
Wide-open Flow Coefficient
IeC Sizing Coefficient
Line Size Equals Body Size
C
1
K
m
F
L
x
T
F
d
NPS
DN
C
g
C
V
2
50
1570
43.8
35.9
0.81
0.90
0.72
0.36
Installation Location
•
The installed regulator should be adequately
protected from vehicular traffic and damage from
other external sources.
•
Install the regulator with the vent pointed
vertically down, see Figures 2 and 3.
If the vent
cannot be installed in a vertically down position,
the regulator must be installed under a separate
protective cover. Installing the regulator with the vent
down allows condensation to drain, minimizes the
entry of water or other debris through the vent and
minimizes vent blockage from freezing precipitation.
•
Do not install the Type MR105 in a location
where there can be excessive water
accumulation or ice formation,
such as directly
beneath a downspout, gutter or roof line of a
building. Even a protective hood may not provide
adequate protection in these instances.
•
Install the regulator so that any gas discharge
through the vent or vent assembly is over 3 ft / 0.9 m
away from any building opening.
•
Periodically check all vent openings to be sure that
they are not plugged.
CAUTION
To protect against precipitation, make
certain that the vents are oriented
such that the opening does not allow
precipitation to enter vents.
Regulators Subjected to Heavy
Snow Conditions
Some installations, such as in areas with heavy
snowfall, may require a hood or enclosure to protect the
regulator from snow load and vent freeze over.
Table 4.
Maximum Differential Pressure
ACTUATOR TYPE
Body SIze
MAxIMUM DIFFERENTIAL PRESSURE
gas Service (Linear Cage)
Liquid Service (Quick Opening Cage)
NPS
DN
psid
bar d
psid
bar d
Low Pressure
1
25
400 or maximum
inlet pressure,
whichever is lower
27.6 or maximum
inlet pressure,
whichever is lower
200
13.6
2
50
200
13.6
3
80
225
15.5
4
100
225
15.5
High Pressure
1
25
400 or maximum
inlet pressure,
whichever is lower
27.6 or maximum
inlet pressure,
whichever is lower
250
17.2
2
50
200
13.6
3
80
225
15.5
4
100
250
17.2
