Parts Ordering .......................................................................9
Parts List................................................................................9
www.fisherregulators.com
Introduction
Scope of the Manual
This manual provides instructions for the installation,
maintenance, and parts ordering information for CP200 Series
pressure loaded pressure reducing regulators.
D103121X012
CP200 Series
Table 1. Available Congurations
TYPE NUMBER
CP20
OVERPRESSURE PROTECTION MODULE
0Without Overpressure Protection Module
5With Secondary Seat™ Protection
6With Secondary Seat Protection with bleed to indicate Secondary Seat is functioning
PRESSURE REGISTRATION
IInternal Registration
RELIEF
NNon Relief
TInternal Token Relief
OPTIONS
Table 2. Inlet Pressure Ratings and Flow and Sizing Coefcients
SERIES
CP200
CP205 and
CP206
1. Inlet pressures based on lock-up performance. For maximum inlet pressure values with optimum regulating performance refer to the applicable Flow Capacity table in the bulletin.
2. To comply with ANSI B109.4 relief requirements, the maximum inlet pressure may need to be reduced.
ORIFICE SIZE
InchmmpsigbarC
1/8
3/16
1/4
3/8
1/2
1/8
3/16
1/4
5/16
3.2
4.8
6.4
9.5
13
3.2
4.8
6.4
7.9
MAXIMUM OPERATING
INLET PRESSURE
125
125
125
60
40
125
125
125
100
8.6
8.6
8.6
4.1
2.8
8.6
8.6
8.6
6.9
FLOW COEFFICIENTS
(1)(2)
102
172
(WIDE-OPEN)
g
12
24
44
12
24
44
70
C
0.40
0.80
1.52
3.30
4.40
0.4
0.8
1.5
2.7
C
1
v
30
30
29
31
39
30
30
29
30
IEC SIZING COEFFICIENTS
X
0.53
0.58
0.53
0.60
0.97
0.53
0.58
0.53
0.53
T
F
0.87
0.82
0.85
0.83
0.72
0.87
0.82
0.85
0.85
D
F
0.89
L
WARNING
!
Failure to follow these instructions or to
properly install and maintain this equipment
could result in an explosion and/or re causing
property damage and personal injury or death.
Fisher® regulators must be installed,
operated, and maintained in accordance
with federal, state, and local codes, rules
and regulations, and Emerson Process
Management Regulator Technologies, Inc.
(Regulator Technologies) instructions.
If the regulator vents gas or a leak develops in
the system, service to the unit may be required.
Failure to correct trouble could result in a
hazardous condition.
Call a gas service person to service the
unit. Only a qualied person must install or
service the regulator.
Product Description
The CP200 Series pressure loaded regulators are intended
for general pressure reduction for commercial and industrial
applications using pressure factor measurement, also
referred to as xed factor billing.
2
CP200 Series
Specications
The Specications section lists the specications for the regulator. The following information are stamped on the regulator at the
factory: Type, date of manufacture, spring range, orice size, maximum inlet pressure, maximum operating outlet pressure, and
maximum outlet casing pressure.
Available Congurations
Type CP200IN - Regulator with internal registration
Type CP200IT - Regulator with internal registration and
token relief
Type CP205IN - Type CP200IN with
Secondary Seat™ Protection
Type CP205IT - Type CP200IT with
Secondary Seat Protection
Type CP206IT - Type CP200IT with Secondary Seat
Protection with bleed to indicate Secondary Seat
is functioning
See Table 1
Body Sizes, End Connection Style, and
Pressure Rating
(1)
See Table 4
Inlet Pressure Ratings
(1)
See Table 2
Maximum Outlet Pressure
(1)
Emergency Casing:25 psig / 1.7 bar
Operating: 20 psig / 1.4 bar
Outlet Pressure Ranges
See Table 3
Pressure Loading Regulator Spring Case Connection
1/4 NPT
Orice Sizes and Flow and IEC Sizing Coefcients
See Table 2
Temperature Capabilities
-20 to 150°F / -29 to 66°C
Pressure Registration
Internal
Factory Setpoint Inlet Pressures for Various
Orice Sizes
1/8-inch / 3.2 mm: 80 psig / 5.5 bar
3/16-inch / 4.8 mm: 60 psig / 4.1 bar
1/4-inch / 6.4 mm: 40 psig / 2.8 bar
5/16-inch / 7.9 mm: 30 psig / 2.1 bar
3/8-inch / 9.5 mm: 25 psig / 1.7 bar
1/2-inch / 13 mm: 25 psig / 1.7 bar
Approximate Weight
10 pounds / 4 kg
1. The pressure/temperature limits in this Instruction Manual and any applicable standard or code limitation should not be exceeded.
2. Product has passed Regulator Technologies testing for lockup, relief start-to-discharge and reseal down to -40°.
(1)(2)
Table 3. Outlet Pressure Ranges
OUTLET PRESSURE RANGES
psigbarInchmmInchmm
1 to 269 mbar to 0.14 barGE30199X012Yellow Stripe0.0781.981.3534.3
2 to 50.14 to 0.34GE27213X012Orange Stripe0.1002.541.4737.4
5 to 100.34 to 0.69GE39890X012Black Stripe0.1142.901.4737.4
10 to 200.69 to 1.4GE30200X012Purple Stripe0.1373.481.4236.2
1. Outlet pressure range is controlled by 67CP Series pressure loading regulator spring.
(1)
PART NUMBER SPRING COLOR
SPRING WIRE DIAMETERSPRING FREE LENGTH
Table 4. Body Sizes, Material, End Connection, and Pressure Rating
TYPEBODY SIZE, NPS
3/4 x 1
CP200, CP205,
and CP206
3/4 x 1-1/4
1 x 1-1/4
3/4
1
1-1/4
END
CONNECTION
NPTGray Cast Iron410217512.1
BODY MATERIAL
FACE-TO-FACE DIMENSIONPRESSURE RATING
Inchmmpsigbar
3
CP200 Series
TYPE 67CP PRESSURE
LOADING REGULATOR
VALVE DISK
CONTROL SPRING
CLOSING SPRING
DIAPHRAGM
ORIFICE
M1129
INLET PRESSURE
OUTLET PRESSURE
ATMOSPHERIC PRESSURE
LOADING PRESSURE
Figure 2. Type CP200IN Pressure Loaded Pressure Reducing Regulator with Internal Registration Operational Schematic
VALVE STEM
Principle of Operation
Refer to Figure 2. The CP200 Series has spring-to-close
construction and uses 67CP Series pressure loading regulator
to supply loading pressure to the top of the main diaphragm.
Since the loading pressure regulator controls the main
regulator, adjustment to the downstream pressure is made
using the loading pressure regulator. The load pressure
supplied by the loading regulator is constant and equal to the
desired downstream pressure plus the pressure required to
overcome the light closing spring.
LEVER
MAIN REGULATOR
Zero Downstream Demand (Lockup)
As downstream demand decreases further, the outlet
pressure registering under the main diaphragm together
with the closing spring act to close the main disk against the
orice seating surface. At this point the loading regulator will
continue to supply a small amount of gas downstream that is
equal to the capacity of the bleed restriction in the diaphragm
assembly. As downstream demand decreases to zero ow
outlet pressure rises to meet the lock-up pressure of the
loading regulator. This causes the loading regulator to lock up
PRESSURE RETAINING
PLUG (DO NOT REMOVE)
to stop all ow downstream.
Type CP200 Base Regulator
Type CP205 with Secondary Seat™ Protection
Increasing Downstream Demand
As downstream demand increases the outlet pressure
registering on the underside of the main diaphragm decreases
and the constant loading pressure above the main diaphragm
forces the diaphragm downward. This downward diaphragm
motion is transferred through the lever causing the main
disk to move away from the orice seating surface to supply
additional ow downstream to the required demand.
Decreasing Downstream Demand
As downstream demand decreases the outlet pressure
registering on the underside of the main diaphragm
increases forcing the main diaphragm upward. This upward
motion is transferred through the lever causing the main disk
to move toward the orice seating surface to reduce ow to
meet the required demand.
Refer to Figure 3. The Type CP205 provides
Secondary Seat Protection. As downstream demand
decreases and downstream pressure rises to the regulator
pressure lock-up value, the regulator will lock up. If,
however, damage has occurred to the primary disk, to the
primary orice’s seating surface, or debris has become
lodged between the primary disk and primary orice, the
outlet pressure will continue to rise. This additional pressure
causes the primary disk to apply additional force to the
orice seating surface, which causes the secondary seating
surface to move toward the secondary disk or sealing
surface. If downstream demand decreases to zero, then the
secondary seating surface will contact the sealing surface to
provide lockup.
4
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