Force
– Two Piece Trunnion
Mounted Ball Valve
Document Number:
Revision:
Release Date:
EDC 514
A
05/09/2022
IOM: Installation, Operation and Maintenance Manual
28/43
Ⅵ. Periodic inspection
1.6
Care for removal of the valves from pipelines or installation of the valves on pipelines
Discharge the fluid from pipes and reduce line pressure to the atmospheric level
when dismantling valves from pipelines.
Discharge the fluid and pressure trapped within the valve body with the valve in
partially open position before disassembling.
In case fluid is toxic, inflammable, or corrosive, remove the fluid completely from
pipes and internals of the valves.
Take protective measures to prevent direct exposure to the fluid and catching fire.
Keep off the working area to prevent personal injury if valves are installed at
higher places.
Wear personal protective gear such as goggles, gloves and working boots.
Keep a secure footing while dismantling and mounting valves.
Pipes and valves should be properly supported to avoid misalignment, when the
valves are removed or installed.
Mark both pipes and valve flanges, before valves are removed from pipelines.
Valves should be reinstalled with these marks mated.
Ensure to use new gaskets, when valves are reinstalled in pipelines.
