Samson EB 20a, Mounting And Operating Instructions

Page: 6 / 60

1-2
EB 20a_EN
May 2022 edition
Subject to technical changes
Safety instructions and safety measures
− The ball valve is only used as intended as described in this
chapter.
− An actuator unit that is subsequently installed on the ball
valve is adapted to it and the max. torque is observed, and is
correctly adjusted in the end positions, and in particular in
the opening position of the ball valve.
− The pipe system and control system are properly installed
and regularly checked. The wall thickness of the ball valve
body is measured such that an additional load of the usual
magnitude is taken into account for a pipe system installed
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.
− PFEIFFER is contacted in the case of abnormal operating con-
ditions, such as vibrations, hydraulic shock, cavitation and
also large amounts of solid matter in the medium, especially
abrasive matter.
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 ball valves ful fi l the requirements of the European Pres-
sure Equipment Directive 2014/68/EU and the European
Machinery Directive 2006/42/EC. In the case of ball valves
provided with a CE marking, the Declaration of Conformity
provides information about the conformity assessment proce-
dure that was used. The corresponding declarations of con-
formity 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 ball valves do not have
any own potential ignition sources and therefore are not sub-
ject 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.
Ball valves with plastic lining (PFA, PTFE, EPDM, etc.) through
which chargeable media
fl ows during operation, must be
provided with an electrostatically dissipative plastic lining
whose surface resistance does not exceed a value of 1 G
Ω
(10 9 Ω ) in accordance with DIN EN ISO 80079-36.
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 the manufacturer 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 ball valves!
Ball valves whose permissible pressure/temperature range
(=”rating”) are 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 ball valves whose permissible pressure/temper-
ature range (=”rating”) is suf
fi cient for the operating condi-
tions, see the data sheet

TB 20a.
Risk of bursting of the pressure equipment!
Ball valves and pipes are pressure equipment. Improper opening
can cause the bursting of ball valve components.
Ö
Observe the maximum permissible pressure for the ball valve
and plant.
Ö
Before working on the ball valve, depressurise the concerned
plant parts and the ball valve.
Ö
Before removing the ball valve from the pipe, completely re-
lease the pressure in the pipe so that the medium does not es-
cape uncontrolled from the line.
Ö
Remove the ball valve in the open position so the pressure is
released from the ball.
Ö
Empty the medium from the concerned plant parts and ball
valve. (Wear protective equipment)
1.2 Notes regarding possible personnel injury
Hazards due to incorrect ball valve use!
The incorrect use of the ball valve can represent a hazard for the
user and cause damage to the pipe system that are then no
longer the responsibility of PFEIFFER.
Ö
The lining selected for the parts of the ball valve that come in-
to contact with the media must be suitable for the utilised me-
dia, pressures and temperatures.
Danger of burning due to hot or cold components and pipes!
Depending on the utilised medium, ball valve components and
pipes can become very hot or very cold and cause burns upon
contact.
Ö
Ball valves must be protected against contact in the case of
operating temperatures >+50°C or <-20°C together with the
pipe connections.
DANGER
WARNING