IM-S24-42
CTLS Issue 10
49
Note: Before actioning any installation, observe the 'Safety information' in Section 1.
5.1 General
Valve parts are subject to normal wear and must be inspected and replaced as necessary. Inspection and
maintenance frequency depends on the severity of the service conditions. This Section provides instructions
on the replacement of the packing, stem, plug and seat. All maintenance operations can be performed with
the valve body in the line.
Note:
It is recommended that all soft seals and gaskets are replaced whenever the valve is disassembled.
Annually
The valve should be inspected for wear and tear replacing any worn or damaged parts such as valve plug
and stem, valve seat and gland seals, refer to Section 6 'Spare parts'.
Note 1:
High temperature graphite packed seals are subject to wear during normal operation. We therefore
recommend the graphite packing be replaced during this routine inspection to prevent premature failure of
the packing during normal operation.
Note 2:
It is recommended that all soft seals and gaskets be replaced whenever the valve is disassembled.
Table 2
Recommended tightening torques - Control valve sizes DN125 to DN300
DN125
DN150
DN200 to DN300
KE
203 N m
211 N m
265 N m
KEA
-
245 N m
365 N m
Fig. 15 DN125 to DN300
5. Maintenance : DN125 to DN300
Summary of Contents for Spira-trol K Series
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