How to make the maintenance of DCX4 divert valve NO normally open

Follow step by step the different operations to make the maintenance of DCX4 divert valve.
All operations are described in details to disassembly the valve, to set up the safety device, to remove and replace the seals and to reassemble the valve.
See which tools are needed to make the maintenance operations safely and what are the documents used as a reference.
Making the right maintenance operations with original spare parts and using the right tools guarantees perfect running of the production lines.