Masoneilan 41005 Series Globe Valves with API-6A Capabilities Instruction Manual
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During this operation, make sure that the plug does
not turn when it is seated. If the plug travel is very
small and there is a large amount of plug stem inside
the actuator, it may be necessary to remove the
yoke nut and lift the actuator so that the plug is not
touching the seat.
Align the internal parts as follows:
1. In the case of air-to-extend actuators, supply air to the
actuator at the maximum pressure indicated on the serial
plate and in the case of spring-to-extend actuators, do not
supply air to the actuator, so that the optimum positioning
of the valve plug (B112) and cage (B107) can be obtained.
2. Single bolting circle: in all the case, mount the nuts in
order to indicate by the Figures 12 and 13 and screw
them by successive, uniform and progressive levels.
Make sure that the bonnet’s face stays parallel at the
body one, up to the torque value given in table 5 and 6
are reached.
CAUTION
CAUTION
WARNING
DANGER
Due to the use of metal body gasket(B015), the body
(B001) and the bonnet (B003) will NEVER
be in metal/metal contact.
Figure 12 - Torque Sequence Single Bolting Circle 8 Bolts
Figure 13 - Torque Sequence Single Bolting Circle 12
Bolts
Summary of Contents for Masoneilan 41005 Series
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