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WARNING
Danger of crushing due to moving parts!
The ball valve contains moving parts (actuator and control shaft
as well as the hand lever) that can lead to crushing if reaching
into it.
Do not reach into the bracket during operation.
When working on the ball valve, interrupt and lock pneumat-
ic energy and the control signal.
Danger of injury during the switching operation if performing
test runs on valves not installed in the pipe!
Do not reach into the valve. This can result in serious injuries.
Danger of injury due to venting the actuator!
During operation, when regulating or opening and closing the
ball valve, the actuator can be ventilated.
Install the ball valve such that the actuator does not ventilate
at eye level.
Use suitable silencers and plugs.
Wear eye protection and, if necessary, hearing protection
when working near valves.
Danger of injury due to preloaded springs!
Ball valves that are equipped with spring preloaded actuators
are under mechanical tension.
Before working on the actuator, release the compression from
the preloaded springs, see the corresponding actuator docu-
mentation.
Danger of injury due to residual medium in the ball valve!
When a ball valve must be removed from a pipe, medium can
escape from the pipe or the ball valve.
In the case of media that is harmful to health or hazardous,
the pipe must be completely emptied before a ball valve can
be removed.
Pay attention to the afterfl ow of residuals or residuals that re-
main in dead spots of the ball valve.
Danger of injury due to the releasing of body screw connec-
tions!
If the body screw connections must be released, medium can es-
cape from the ball valve.
The screw connections on the connection of the body parts
may only be released or loosened after the ball valve has
been removed.
During reassembly, tighten the screws according to Table 15-
1 in Chapter "15-1-1 Tightening torques" using a torque
wrench
Dangers due to use as an end fi tting!
During normal operation, in particular with gaseous, hot and/or
hazardous media, spraying medium can cause hazards. It must
be kept in mind that the media is usually hazardous!
A blind fl ange must be assembled on the free connecting
pieces or the ball valve must be secured against unauthorised
actuation.
If a ball valve used as an end fi tting in a pressurised line is
opened, this may only be done with extreme caution so that
the escaping medium does not cause any damage.
EB 20a_EN
November 2023 edition
Subject to technical changes
Safety instructions and safety measures
WARNING
Deviation of the breakaway and actuating forces due to
non-actuation of the ball valve!
Depending on the period of time of non-actuation, the breaka-
way and actuation forces can deviate considerably from the ac-
tuating power data in the data sheet.
It is recommended to actuate the ball valve at regular intervals.
In consideration of the design, actuation must take place dur-
ing the year.
Indicate the duration of non-actuation when making an en-
quiry, so that this condition is taken into consideration in the
actuator design.
In the case of retrofi tted actuators by the operator, the correct
actuator design as regards the duration of non-actuation is
no longer the responsibility of PFEIFFER.
1.3 Notes regarding possible property
damage
NOTE
Damage to the ball valve due to contamination!
Contamination (e.g. solid particles) in the pipes can damage the
ball valve.
The plant operator is responsible for cleaning the pipes in the
plant.
Rinse the pipes prior to commissioning.
Observe the maximum permissible pressure for the ball valve
and plant.
Damage to the ball valve due to unsuitable medium properties!
The ball valve is designed for a medium with certain properties.
Other media can damage the ball valve.
Use the ball valve only in media that complies with the design
criteria.
Damage to the ball valve due to plant vibrations!
If necessary, secure hand-operated ball valves in the case of
plant vibrations with a locking device to prevent it from mov-
ing by itself.
Damage to the ball valve and leakage due to excessively high
or low tightening torques!
The ball valve components must be tightened with defi ned tor-
ques. Deviating torques can lead to ball valve leakage or dam-
age.
Excessively tightened components are subject to increased
wear.
Insuffi ciently tightened components can cause leakage.
Observe the tightening torques, see Table 15-1 in Chapter
"15.1.1 Tightening torques".
1-3
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