Emerson CP200 Instruction Manual

Instruction Manual Form 5834
December 2013
CP200 Series
CP200 Series Commercial / Industrial Pressure­Loaded Pressure Reducing Regulator
P1180
Figure 1. Typical CP200 Pressure Loaded Pressure Reducing Regulator
Table of Contents
Introduction ............................................................................1
Specifications ........................................................................3
Principle of Operation ............................................................4
Installation and Overpressure Protection ..............................6
Startup ...................................................................................7
Adjustment.............................................................................7
Shutdown...............................................................................7
Maintenance ..........................................................................8
Parts Ordering .......................................................................9
Parts List................................................................................9
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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 Congurations
TYPE NUMBER
C P 2 0
OVERPRESSURE PROTECTION MODULE
0 Without Overpressure Protection Module
5 With Secondary Seat™ Protection
6 With Secondary Seat Protection with bleed to indicate Secondary Seat is functioning
PRESSURE REGISTRATION
I Internal Registration
RELIEF
N Non Relief
T Internal Token Relief
OPTIONS
Table 2. Inlet Pressure Ratings and Flow and Sizing Coefcients
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
Inch mm psig bar C
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 qualied 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
Specications
The Specications section lists the specications for the regulator. The following information are stamped on the regulator at the factory: Type, date of manufacture, spring range, orice size, maximum inlet pressure, maximum operating outlet pressure, and
maximum outlet casing pressure.
Available Congurations
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
Orice Sizes and Flow and IEC Sizing Coefcients
See Table 2
Temperature Capabilities
-20 to 150°F / -29 to 66°C
Pressure Registration
Internal
Factory Setpoint Inlet Pressures for Various
Orice 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
psig bar Inch mm Inch mm
1 to 2 69 mbar to 0.14 bar GE30199X012 Yellow Stripe 0.078 1.98 1.35 34.3
2 to 5 0.14 to 0.34 GE27213X012 Orange Stripe 0.100 2.54 1.47 37.4
5 to 10 0.34 to 0.69 GE39890X012 Black Stripe 0.114 2.90 1.47 37.4
10 to 20 0.69 to 1.4 GE30200X012 Purple Stripe 0.137 3.48 1.42 36.2
1. Outlet pressure range is controlled by 67CP Series pressure loading regulator spring.
(1)
PART NUMBER SPRING COLOR
SPRING WIRE DIAMETER SPRING FREE LENGTH
Table 4. Body Sizes, Material, End Connection, and Pressure Rating
TYPE BODY 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
NPT Gray Cast Iron 4 102 175 12.1
BODY MATERIAL
FACE-TO-FACE DIMENSION PRESSURE RATING
Inch mm psig bar
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
orice 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 orice 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 orice 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 orice’s seating surface, or debris has become lodged between the primary disk and primary orice, the
outlet pressure will continue to rise. This additional pressure causes the primary disk to apply additional force to the
orice 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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