MVI422...MXI422... valves require no maintenance.
When servicing the valve/actuator:
- Deactivate the pump and turn off power.
- Close the shutoff valves.
- Fully reduce the pressure in the piping system and allow pipes to completely cool down.
If necessary, disconnect the electrical wires.
Stem sealing gland
The stem sealing gland cannot be exchanged. The entire valve must be replaced in the event of leakage. Contact your local office or branch.