Disassembly And Reassembly - Flowserve Valtek FlowTop V750 User Instructions

Valtek FlowTop

13 Disassembly and Reassembly

The Valtek FlowTop control valve is al-
lowed to be disassembled and reassem-
bled only by qualified staff - personnel
who are familiar with disassembling, re-
assembling, installation and commission-
ing of this product, and possess the rele-
vant qualifications in their field of activity.
Control valves are pressure vessels.
WARNING
Improper opening of the valve or actuator can result in bodily injury.
Prior to disassemble and reassemble, we require, that you check the following conditions to reduce the risk of malfunction
and safety related incidents.
No. Important information
1 Disregarding these instructions may bring serious or
harmful consequences.
2
Always observe system safety instructions when
preparing for and performing the repair procedure.
3
Make sure the pipeline is depressurized and in
ambient state, also a suitable rigging (e.g. End-
less Sling) and securing devices (e.g. Vee Trough with
Stands / Vise) are readily available.
4 Confirm that you have the required spare parts at the site.
5
Confirm that you have the required tools avail-
able to manage the disassembly and reassem-
bly (See Section 16: Special Tools).
6 Review the serial plate information to identify the valve.
The serial number and the part numbers needed are re-
quired when ordering spare parts.
7 Do not damage any valve surfaces during repair.
Check all parts for damage such as scoring, deformities,
8
corrosion or overexpansion.
FCD VLEEIM1485-04 (EN/A4) November 2022
When performing repairs, personnel are to follow these
instructions using only original equipment manufacturer
(OEM) spare parts and recommended special tools to ensure
the reliability of the Valtek FlowTop control valve.
Only Flowserve trained and authorized personnel are allowed
to repair (disassemble and reassemble) the Valtek FlowTop in
hazard areas.
Valves are provided for oil and grease-less service or oxygen
service may only disassembled and reassembled in clean
rooms (ISO 14644- ISO 8, US FED STD 209 E - M 6.5, or
equivalent).
Failure to comply with these user instructions will render
the manufacturer's guarantee and liability null and void.
Unless otherwise agreed, the manufacturer's general
terms and conditions of sale shall apply.
Potential hazards and their sources are under the operator's
influence. The operator must observe national and interna-
tional environmental regulations for control valve removal
from the pipe and cleaning. Permissible exposure limits
must be maintained, appropriate personal protective equip-
ment must be used and service personnel must be properly
instructed in performing the repair procedure.
Remove the Valtek FlowTop from the pipeline in a depres-
surized and ambient state. Failure to do so can cause seri-
ous personal injury.
The control valve is not equipped with integral stands,
therefore guard against the valve from tipping over. Bodily
injuries can be the result. Use appropriate clamps, block-
ing or other stabilizing support. Attachment to overhead
crane can ensure stability.
Not having the full complement of parts, accessories and
tools can slow or stop repair work.
Improper tools and / or improper use of tools can result
in personal injury or damage to the parts.
A serial plate used for product identification is attached
on every control valve (See Section 3: Product Identifica-
tion).
Damaging the stem surface and / or packing area may
lead to premature leakages in the packing area.
If in doubt, replace faulty parts.
Never reuse gaskets.
Table 9: Basic safety massages for repairing the control valve
Possible malfunction or safety related incident
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