Honeywell HON 5020 Assembly page 27

Spare parts
Maintaining the
actuator assembly
HON 5020 gas pressure regulator
Nominal size Pressure rating
Class 600
6" (DN 150)
Prepare the following spare parts:
 Flow restrictor (if necessary)
 Diaphragm
 O-ring
Proceed as follows:
Figure
Screw specifications
1" UNC grade 7
M24
Step Description
1 Remove the pilot, together with all the
corresponding connecting pipes, from the
actuator assembly.
2 Disassemble the lid.
CAUTION! The lid is spring-loaded. Risk of
injury due to bouncing up when the screws
are unscrewed. Push the lid down when
unscrewing the screws.
3 Remove the closing spring (1) and the
diaphragm unit (2).
4 Remove the flow restrictor.
If the flow restrictor is damaged: Replace
the flow restrictor with a new one.
Maintenance
Tightening torque
705 Nm (520 ft lbs)
27