Azbil VDC - Page 8

Safety Guide Azbil Corporation
vi Model MTG11A/18A, MTG11B/18B, MTG14C
4-2 : Installation work
CAUTION
• Ensure that centers of upstream and downstream pipes are aligned when pipe
installation has been completed. Any mis-alignment of pipe will distort the valve
and will cause leakage from the connections. (Gasket)
• Make sure that the face to face dimension of pipe anges is equal to face to face
dimension of valve body plus gasket thickness.
• When installing a buttery valve on a pipe, keep the valve body (vane or disk) in
the fully closed position. When lifting a valve using the eyebolts on the actuator,
make sure that the rated weight of the bolt does not exceed the limit given in
the instruction manual. A load in excess of the limitation will cause damage to
actuator or will result in air leakage.
• Use proper gaskets for pipe anges. Otherwise, process uid may leak. Always
use new gaskets for pipe anges that will meet process uid specications,
temperature and pressure
conditions. Otherwise
process uid leakage
may occur.
• When ushing pipes,
keep valve in the fully
open position and do not
stroke valve. Welding
spatter or foreign matter
may damage valve.
WARNING
When installing a valve on
a pipe, keep hands and feet
away from valve body's
bottom or from between
anges to avoid physical
injury.
When reinstalling the
valve after inspection,
maintenance or
modication, ush out
process uid remaining in
the pipe or replace it with
safer liquid.
Weight
limit
1
2
3
4
Tighten diagonally