Operation; Operating Media - Emerson EL-O-Matic F Series Sicherheitshandbuch

Safety Guide
DOC.SG.EF.EN Rev. 2

3.2 Operation

WARNING - MOVING PARTS
When rotating the actuator stem or shaft with loading pressure applied, use caution to keep
hands and tools out of the actuator travel path. Personal injury and property damage is possible
if something is caught between the actuator stem and other control valve assembly parts.

3.2.1 Operating media

1. Use clean, dry or lubricated air or inert gas.
2. Maximum Operating Pressure (MOP) = 8.3 barg/120 psig
MOP is the pressure required to produce the maximum rated torque at the break
position for all actuators.
Pressure should not exceed MOP during valve rotation.
MOP should be the maximum pressure regulator setting.
WARNING - DO NOT EXCEED SPECIFICATIONS
It can be assured that the housing will not rupture or burst when applying 10 bar of pressure
but the cycle function cannot be guaranteed as it totally depends on the time span to which
actuator is subjected at 10 bar and the frequency at which these pressure peaks occurs. Every
time this peak occurs will, for sure, have a significantly negative effect on the life expectancy of
the actuator.
3. Refer to below table on applications where the spring stroke of spring-return
actuators is pneumatically operated.
Table 3.1 Maximum pressure on spring stroke of spring-return actuators
Spring set
N=10
N=20
N=30
N=40
N=50
N=60
4. Dew point at least 10K below ambient temperature.
5. For subzero applications take appropriate measures.
6. Mentioned pressure levels are "gauge pressures". Gauge pressure is equal to
absolute pressure minus atmospheric pressure.
Maximum pressure on spring stroke of spring-return actuators
7 barg / 101.5 psig
6 barg / 87.0 psig
5 barg / 72.5 psig
4 barg / 58.0 psig
3 barg / 43.5 psig
2 barg / 29.0 psig
EL-O-Matic F-Series
April 2018
4
EN