Flowserve Cast Globe Valves - Manual (Page 13)

Globe Valves FCD ADENIM0011-00
13
4.0 OPERATING THE VALVE
(Continued)
4.5 Operating Tips
Do:
- Operate valves at least every 6 months.
- Keep stem clean and lubricated.
- Inspect valves regularly.
- Lap seats promptly if valve leaks.
- Use normal torque on handwheel.
- Check packing regularly.
Do Not:
- Overtighten packing.
- Torque-out motor operator against backseat.
- Keep valve backseated during normal operation.
- Bypass or reset torque or limit switches.
- Use unauthorized actuator assists such as – pipe wrenches – cheaters.
- Bring valve to fully backseated position immediately upon opening a valve
in a hot system. Allow 15 minutes for stem to cool before backseating
valve.