Overpressure protection options include the Type CP403 which offers True-Monitor™ Protection
provided by an Integral Monitor Module installed on the inlet side of the valve body. This Integral Monitor
assumes control of the downstream system pressure should the primary regulator no longer regulate.
Another Overpressure protection option is provided by the Type CP404, which offers an integral slam-shut
module installed on the inlet side of the valve body that shuts off the flow of gas to the downstream system
in the event of outlet pressure rising above or falling below the predefined levels.
Optional token relief is available, which acts as a low capacity internal relief valve to relieve minor
overpressure situations due to nicks or other minor damage to the orifice or disk, or due to thermal
expansion of the downstream system. The Token relief is located in the Type 67CPR pressure loading regulator.
Internal and external outlet pressure registration is available. Constructions with external registration require an external control line/sense line.
Inlet Pressure Ratings and Flow and Sizing Coefficients
| Orifice Size |
Maximum Operating
Inlet Pressure |
Flow Coefficients
(Wide-Open) |
C1
|
IEC Sizing Coefficients |
| Inch |
mm |
psig |
bar |
Cg |
Cv |
XT |
FD |
FL |
|
3/16
1/4
3/8
1/2
5/8
3/4
|
4.8
6.4
9.5
13
16
19 |
125
125
80
60
50
40 |
8.6
8.6
5.5
4.1
3.4
2.8 |
27
50
113
182
284
356 |
0.97
1.77
3.72
5.61
7.26
9.83 |
27.7
28.2
30.4
32.4
39.1
36.2 |
0.50
0.50
0.58
0.66
0.97
0.83 |
0.91
0.92
0.89
0.82
0.74
0.72 |
0.89 |
Outlet Pressure Ranges
| Type |
Outlet Pressure Ranges |
Spring
Number |
Part Number |
Spring Color |
Spring Wire Diameter |
Spring Free Length |
| psig |
bar |
Inch |
mm |
Inch |
mm |
|
CP400, CP403 and CP404
|
1 to 2 |
69 mbar to 0.14 bar |
1 |
GE30199X012 |
Yellow Stripe |
0.085 |
2.16 |
1.47 |
37.3 |
| 2 to 5 |
0.14 to 0.34 |
2 |
GE27213X012 |
Orange Stripe |
0.096 |
2.44 |
1.47 |
37.3 |
CP400 and
CP404 |
5 to 10 |
0.34 to 0.69 |
3 |
GE39890X012 |
Black Stripe |
0.114 |
2.90 |
1.47 |
37.3 |
| 10 to 20 |
0.69 to 1.4 |
4 |
GE30200X012 |
Purple Stripe |
0.137 |
3.48 |
1.43 |
36.3 |
Body Sizes, Material, End Connection, and Pressure Rating
| Type |
Body
Material |
Body Size |
End Connection |
Face-to-face Dimension |
Pressure Rating |
| Inch |
mm |
psig |
bar |
| CP400 |
Gray Cast Iron |
1-1/4 |
NPT |
4.5 |
114 |
175 |
12.1 |
| 1-1/2 |
| 1-1/4 x 1-1/2 |
| 2 |
5 |
127 |
| NPS 2 / DN 50 |
CL125 FF |
10 |
254 |
CP400, CP403
and CP404 |
Ductile Iron |
1-1/4 |
NPT |
4.5 |
114 |
290 |
20.0 |
| 1-1/2 |
| 2 |
5 |
127 |
| 1-1/4 |
Rp |
4.5 |
114 |
| 1-1/2 |
| 2 |
5 |
127 |
| NPS 2 / DN 50 |
CL125 FF /
CL150 FF |
10 |
254 |
| NPS 2 / DN 50 |
PN 10/16 |
232 |
16.0 |
| Steel |
1-1/4 |
NPT |
4.5 |
114 |
290 |
20.0 |
| 1-1/2 |
| 1-1/4 |
Rp |
7.5 |
191 |
| 1-1/2 |
10 |
254 |
Fisher CP400 industrial Pressure reducing regulatorDownload