Emerson KTM Series Operating And Safety Instructions

KTM SERIES POWDER DISCHARGE SYSTEM (PDS) BALL VALVES
OPERATING AND SAFETY INSTRUCTION
Before installation these instructions must be read fully and understood
1 SCOPE OF APPLICATION
This instruction manual applies to the PDS ball
valve.
2 HANDLING SUMMARY
2.1 Piping summary
In order to keep using the valve in good
condition for long, carry out piping in
ac-cordance with the following procedure.
a. Before installing the delivered product,
collate whether it meets specified opera-
tional conditions (e.g. temperature,
pressure, fluid property, environment,
piping standard).
b. Check each section of the valve for
components such as bolts, and nuts. Make
sure there is no loosening of each section
caused by transportational vibration, etc.
If a loose section is found, tighten it as
required.
c. Since both flanges of the valve are covered
with dustproof seals, peel them off.
d. Before installing the valve, carry out
adequate flashing of pipe lines (inside
of pipe line) to remove foreign matters.
Installing and operating the valve to open
and close leaving welding or cut chips
unremoved inside pipes may threaten to
cause damage to the ball and seat of the
valve.
e. The valve can be mounted to a horizontal
or vertical pipe, or can be installed in any
direction such as turning it sideways, except
that the mounting attitude of the valve may
be limited for maintenance or automatic
operation.
f. When fastening flange bolts, alternately
fasten each pair of those opposite to each
other toward the center of the flange by
applying uniform strength with care for
uneven fastening. Uneven fastening of
flange bolts causes pipe stress, thereby
damaging the flange, or inducing an
excessive operating torque.
Emerson.com/FinalControl
2.2 Checkup and maintenance
To make the valve perform its intrinsic function
to the utmost end without fail, carry out
periodic checkup and maintenance of it as
required.
a. Valve seat
The valve seat is made of stainless steel
deposited of stellite. In case unusu-ally
excessive leakage occurs from the valve
seat disassemble the valve to check for
leakage from the surface of seat and ball.
Since a scratch or flaw on the surface of
ball or seat may cause excessive leakage
from the vale seat, it is necessary to replace
the seat or ball as re-quired. (Since the
allowance for leakage from the valve seat
is prescribed by the ANSI/FC170-2bCLASS
5, the KTM employs the allowance as
standard.)
In addition, when reassembling the valve,
replace the gasket with a new one.
b. Mating face between the body and the
body cap
The mating face between the valve body and
the body cap uses a gasket. Make sure there
is no leakage from the mating face. In case
slight leakage occurs from the mating face,
retighten bolts and nuts for the body cap.
In case even slight leakage still continues,
disassemble the valve, check the gasket
to make sure of the presence or absence
of abnormality, and replace the gasket as
required.
© 2020 Emerson. All rights reserved.
VCOSI-14922-EN 20/01