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Installation, Operation & Maintenance
Where liquid media with great strain on the body and cover
under pressure. Heat expansion and temperature fluctua-
tions are used in the system. Impermissibly high pressures
can result, which place too great a strain on the body and
cover under pressure. In such cases, the valve and the pipe-
line must be secured against impermissibly high pressure.
The dead spaces in the valve must be secured separately by
means of a pressure-relief bore hole or other measures.
When the valve is installed in the pipeline, the arrow
on the fitting must point in the pressure direction.
Tightness in the opposite direction is not guaranteed.
2.2.3 Installation
•
The valve has to be installed without tension in a clean
pipeline.
•
Before the valves are installed, check that the connec-
tion dimensions of the valve flanges or the welding end
connectors match those of the pipeline.
•
The flange seals must be centred.
•
The fastening screws on the connection flanges must
be tightened evenly and crosswise.
•
Welded valves are to be welded in place without
tension, taking technical rules into account. (Welding
and any heat treatment that may be necessary takes
place at the responsibility of the pipeline construction
company).
•
The valve may not serve as an anchor in the pipeline
system; it must be carried by the pipeline.
2.3 Commissioning
•
Before the valve is put into operation, check that the
correct valve has been installed in installation position
according to 2.3.2.
•
Check the correct position of the valve in relation to the
way the system works.
•
All installation work must be completed correctly be-
fore operation is started.
•
Check the valve for leaks during and after it has been
put into operation by means of visual inspection.
2.4 Maintenance and Testing
2.4.1 Maintenance Interval
Depending on the type of system and operating data
involved, the valve will need some maintenance.
The maintenance interval must be determined by the
system owner-operator on the basis of his specific
operational experience. In particular, air tightness
and function must be checked regularly according to
operational experience or legal regulations.
CAUTION!
Valves for the flow medium oxygen must not be
allowed to come into contact with unsuitable materials, e.g.
lubricants!
2.4.2 Testing Pressure
The testing pressure for recurring tests must not exceed the
value of the testing pressure at the manufacturer's. This can
be found in the valve's acceptance test certificates.
2.4.3 Stuffing Box on Ball Valves
•
Check that the stuffing box is leakproof.
•
If the stuffing box is not leakproof, tighten carefully
until it is.
•
Valve actuation must be guaranteed, however.
•
If tightness cannot be achieved, the stuffing box
packing must be replaced.
The stuffing box packing may only be replaced when the
instructions under section 1.2 + 2.8 of this operating manual
are taken into account.
The packing ring material must be resistant to the flow
medium and be suitable for the respective operating data,
operating pressure and operating temperature.
The special packaging instructions of the packing
manufacturer must be taken into account for the different
packing materials, or the valve manufacturer must be
consulted if necessary.
ATTENTION
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ATTENTION
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ATTENTION
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ATTENTION
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ATTENTION
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Содержание TUFSEAT Performance Series
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