Emerson Bettis CBB Series - Return to Service; Pressure Requirement & Limitations for CBB-SR Actuators

Service Instructions
137465E Rev. F
May 2012
16
Section 4: Actuator Testing
Actuator Testing
NOTE:
This test is to be done off of the valve or when valve stem is not coupled to the actuator
torque shaft.
4.1.8.1 Adjust the pressure regulator to the pressure rating that the customer
uses to operate the actuator during normal service.
4.1.8.2 Apply the above pressure to the actuator and allow the actuator to
stabilize. The actuator should stroke a full 90° travel with the stops
properly set.
4�2 Return to service
4.2.1 Install breather (30) into end cap (4-20).
4.2.2 After the actuator is installed back on the valve all accessories should be hooked
up and tested for proper operation and replaced, if found defective.
4�3 Pressure requirement & limitations for
CBB-SR actuators
Table 4� Pressure requirement and limitations
Actuator
Model
Nominal
Operating
Pressure
Maximum
Operating
Pressure
Actuator
Model
Nominal
Operating
Pressure
Maximum
Operating
Pressure
CBB Psig Barg Psig Barg CBB Psig Barg Psig Barg
315-SR40 40 2.76 155 10.69 520-SR40 40 2.76 110 7.59
315-SR60 60 4.14 152 10.48 520-SR60 60 4.14 116 8.00
315-SR80 80 5.52 150 10.34 520-SR80 80 5.52 120 8.27
315-SR100 100 6.89 164 11.31 520-SR100 100 6.89 132 9.10
415-SR40 40 2.76 100 6.89 525-SR40 40 2.76 146 10.07
415-SR60 60 4.14 112 7.72 525-SR60 60 4.14 151 10.41
415-SR80 80 5.52 117 8.07 525-SR80 80 5.52 159 10.96
415-SR100 100 6.89 114 7.86 525-SR100 100 6.89 163 11.24
420-SR40 40 2.76 157 10.83 725-SR40 40 2.76 102 7.03
420-SR60 60 4.14 156 10.76 725-SR60 60 4.14 115 7.95
420-SR80 80 5.52 161 11.10 725-SR80 80 5.52 124 8.55
420-SR100 100 6.89 166 11.45 725-SR100 100 6.89 124 8.55