Installation, Operation and Maintenance Manual
SERIES T/TE/TW/TWE
ONE-PIECE TOP ENTRY
TRUNNION BALL VALVE
Page:
12
of
12
Document Name: IOM-T
Revision:
15333
Release Date: 06/26/2015
Vent and
drain leakage
Leakage through drains and vents caused by
damage of elastomeric seal material or when
minimum torque required is not achieved
(wrong torque applied or threaded parts
damaged).
In this case there is a leakage of fluid or gas
from vent and drain.
If elastomeric seal material is
damaged it is substituted after
dismounting the vent and
drain.
In case there is any missing
torque the correct torque is
applied (after the verification of
integrity for threaded area).
Leak from the gasket seal can
require the dismounting of the
flange and substitution of
gasket seal.
