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7.
Marking of the valve
The valve housing is marked with following information:
Manufacturer sign
Order number
Tag number
Year of manufacture
Material
DN XXX / PN XX
PED marking
8.
Commissioning and operation
8.1
General information
To ensure long service life of the valves, the following information must be observed:
• Loose parts must be (re-)tightened.
• The valve must not be blocked.
• If fluid leaks from the valve, operation must be stopped, and the manufacturer must be contacted.
• If the valve is iced up, operation must be stopped, and the manufacturer must be contacted.
• If the valve does not perform its full travel, operation must be stopped, and the manufacturer must be
contacted.
• A travel check must always be performed to make sure that all parts are correctly assembled. In case of
clamping/jamming or friction noise, operation must be stopped immediately, and the cause must be
investigated.
Establish the electrical and pneumatic connections for all pneumatic (e.g. solenoid valves, pneumatic
actuators, position controllers) and electrical (e.g. switches, position controllers) components according to
the technical drawing of the valve.
Prior to commissioning of a new system and particularly after repair work, the entire piping system must be
purged. For that purpose, all valves must be put in the open position. In this process, all hazardous
particles, such as chips and welding beads are removed
8.2
Pneumatic valves
• The compressed air values must comply with the pneumatic diagram in the
customer's drawing.
• Control the valve by applying the appropriate input signal to the control signal
element of the valve (e.g. position controller or solenoid valve).
• Always connect the pneumatic air pressure line to the valve according to the
pneumatic diagram in the customer's drawing.
