Samson EB 14b, Монтаж и эксплуатация

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1-2
EB 14b_EN
January 2022 edition
Subject to technical changes
Safety instructions and safety measures
− The butter fl y valve is only used as intended as described in
this chapter.
− An actuator unit that is subsequently installed on the butter fl y
valve is adapted to the butter fl y valve and the max. torque is
observed, and is correctly adjusted in the end positions, and
in particular in the closed position of the valve.
− The pipe system and control system are properly installed
and regularly checked. The wall thickness of the butter
fl y
valve body is measured such that an additional load of the
usual magnitude is taken into account for a pipe system in-
stalled properly in this way.
− The valve is connected properly to these systems.
− The customary fl ow rates in continuous operation are not ex-
ceeded in this pipe system. It is recommended to contact
Pfeiffer in the case of abnormal operating conditions, such as
vibrations, hydraulic shock, cavitation and also small
amounts of solid matter in the medium, especially abrasive
matter.
− Coordinate operating parameters near the cavitation limits
and/or with noise emission clearly above 85 dB with
PFEIFFER.
Obligation of operating personnel to exercise diligence
Operating personnel must be familiar with this installation and
operating manual and the applicable documents and comply
with the indicated hazard information, warning information and
other information. Furthermore, operating personnel must be fa-
miliar with the applicable regulations concerning occupational
safety and accident prevention and observe them.
Applicable standards and directives
− The butter fl y valves ful fi l the requirements of the European
Pressure Equipment Directive 2014/68/EU and the European
Machinery Directive 2006/42/EC.
In the case of butter fl y valves provided with a CE marking,
the Declaration of Conformity provides information about the
conformity assessment procedure that was used.
The corresponding declarations of conformity are available
in the Annex of this EB, see chapter “14 Certi
fi cates“.
− According to an ignition hazard assessment according to
DIN EN ISO 80079-36, PFEIFFER butter
fl y valves do not
have any own potential ignition sources and therefore are not
subject to Directive 2014/34/EU.
− CE marking based on this standard is not permitted. The in-
clusion of valves in the equipotential bonding of a plant ap-
plies independently of the directive for all metal parts in po-
tentially explosive areas.
1.1 Notes regarding possible severe per-
sonnel injury
Hazards and ineffectiveness of the warranty!
In the case of non-compliance with the following hazard and
warning information, hazards may arise and the warranty pro-
vided by PFEIFFER may become invalid.
Ö
Observe the following hazards and warning information.
Ö
Contact PFEIFFER in the case of questions:
Hazards and damage due to unsuitable butter fl y valves!
Butter fl y valves whose permissible pressure/temperature range
(=”rating”) is not suf fi cient for the operating conditions can pose
a danger to the user and cause damage to the pipe system.
Ö
Only operate butter fl y valves with a permissible pressure/
temperature range (=”rating”) suf fi cient for the operating
conditions, see the data sheet

TB 14b
Risk of bursting of the pressure equipment!
Butter fl y valves and pipes are pressure equipment. Improper
opening can cause the bursting of butter fl y valve components.
Ö
Observe the maximum permissible pressure the butter fl y
valve and plant.
Ö
Before working on the butter fl y valve, depressurise the con-
cerned plant parts and the butter fl y valve.
Ö
Before removing the butter fl y valve from the pipe or loosen-
ing the screw connection on the bonnet, completely release
the pressure in the pipe so that the medium does not escape
uncontrolled from the line.
Ö
Empty the medium from the concerned plant parts and but-
ter
fl y valve. (Wear protective equipment).
Danger due to incorrect loosening of an optional adjustable
stuf
fi ng box!
The valve shaft is sealed by a stuf fi ng box.
Ö
Before the nuts on the compression spacer are loosened or
released, fully release the pressure in the pipe so no medium
escapes from the stuf
fi ng box.
1.2 Notes regarding possible personnel injury
Danger of burning due to hot or cold components and pipes!
Depending on the utilised medium, butter fl y valve components
and pipes can become very hot or very cold and cause burns
upon contact.
Ö
Butter fl y valves must be protected against contact in the case
of operating temperatures >+50°C or <-20°C together with
the pipe connections.
DANGER
WARNING