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Version 0 • Dokument-Nr. 74572811
Internet: www.gefa.com • E-Mail: gefa@gefa.com
2.6 Product safety
The valves of GEFA Processtechnik GmbH correspond to the state of the art and the prescribed safety rules,
but nervertheless hazards can occur in connection with valves. The valve may only be operated in proper condi-
tion, in the intended area and under consideration of all associated documentation. Any change to the valve
may only be made after approval by the manufacturer. The basic requirement for trouble-free operation is
proper connection of the electrical, hydraulic and pneumatic lines.
WARNING
Improper use / excessive stress of the valve
The use of material incompatible media or operating outside the approved specification, exceeding
the manufacturer's approved pressure and temperature limits, the use of the valve as a climbing
aid, including all actuators (hand lever, gearbox, drive, feedback and control systems), and from
the outside acting loads and shear forces due to additional stresses can lead to failure of the pres-
sure-bearing parts and bursting of the valve.
2.7 Product-specific dangers
WARNING
Dangers relating to a valve
The flow medium, the control pressure, the temperature and moving parts can potentially pose a
hazard. These potential hazards must be prevented by appropriate activities by the operator.
It is not permissible to reach into the valve at any time. In general, there is a risk of injury to moving
parts.
2.8 Outflowing media
WARNING
Outflowing media
If harmful or environmentally hazardous media leak out (e.g. leaks or disassembly of the valve),
they must be collected in such a way that there are no hazards to persons or the environment. Ob-
serve all applicable local regulations that apply to the disposal of the respective medium and the
valve.
2.9 Failure of actuator operating power
WARNING
Failure of actuator operating power
In case of failure of actuator operating power, the valve could go into a state of insecurity for its in-
tended use.
Choose your valve in such a way that if the actuator operating power fails, the valve can change
into a safe operating state for its intended use.
2.10 Mounting of actuators
Observe the following notes for mounting of a valve actuator.
CAUTION
Ventilation of pneumatic components
a) During venting operations on pneumatic components, increased noise may occur.
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Prevent this by suitable measures (silencer).
NOTICE
Mounting of actuators
Actuators must be installed in alignment with the valve stem. Tensions can lead to increased wear
or leakage of the stem seal.
The weight of a built-up actuator must not load the stem of the valve on one side. Therefore actuat-
ors must be intercepted if necessary - without fixation.
Pneumatic or hydraulic actuators must be operated at the agreed design pressure. Pay attention to
the maximum permissible operating pressure.