Flowserve ZK 313 User Manual
Page 4
4
Important Notes
(continued)
Warning
Danger
If the control valve is used in an inexpert or improper manner by unqualified
staff, it can cause danger to life and limb for the user or for third parties,
possibly resulting in death.
During operation, the control valve ZK 313 is under pressure. In this condition,
screws, nuts or bolts must not be slackened. Hot water or steam could flow out
and could cause severe scalding over the entire body.
During operation, the valve might be hot. If the valve is touched when in the
operational condition, severe burns are possible. It must be ensured that,
when handwheels are being operated, the operator wears gloves.
Any installation or removal work may only be performed when the equipment
is at zero pressure and has cooled down. When such work is to be done, the
pressure in the pipes upstream and downstream of the valve must have been
reduced to zero and the valve must have cooled down sufficiently. It must be
ensured that, during the work, the system section in which pressure has been
reduced to zero cannot be accidentally put back into operation. The shut-off
valves needed for this purpose must be separately secured and marked.
In addition, it must be ensured that the actuators of the valve are not in the
connected state. The connection to the energy supply (electric, pneumatic,
hydraulic) must be disconnected and must be secured to prevent it from being
operated accidentally. One or more warning notices, for example containing
the text "DO NOT SWITCH ON", must be displayed in a clearly visible manner
at each operating element.
Ratings Pursuant to Article 9 of the Pressure Equipment Directive
Gaseous
Liquid
Fluid
1
2
1
2
Use
No
Yes
No
Yes
Category
Exception
according
to Art.3.3
I
II
III
IV
(safety
equipment)
Nominal size of connection, DN
25
32 – 100
125
≥150
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CE marking
No
Yes
Yes
Yes
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The control valve may only be used in accordance with the above-mentioned ratings pursuant
to Article 9 of the Pressure Equipment Directive. Any other type of use must be considered as
improper.