2
Safety
2.1
Intended use
The double-seat change-over valve Y is used for switching liquid flows in pipeline
systems
The medium should preferably flow in the opening direction of the valve disk to
avoid pipe hammers when the valve is opened or closed.
If the valve is used in the opposite direction (valve closing), a damping cylinder
can be used to avoid pressure drops.
Do not install the valve in spring-opening, as this will open when there is a current
or air failure and leads to product mixing.
In a closed pipe system, hydraulic pressure build-up may occur when the valve
switches and result in seal damage.
Hint!
The manufacturer will not accept any liability for damage resulting
from any use of the valve which is not in accordance with the
designated use of the valve. The risk of such misuse lies entirely with
the operator of the facility.
2.1.1
Requirements for operation
The prerequisite for reliable and safe operation of the component is proper
transportation and storage as well as professional installation and assembly.
Operating the unit within the limits of its designated use also involves adhering to
the operating, inspection and maintenance instructions.
2.1.2
Pressure equipment directive
The valve is a piece of pressure equipment (without safety function) as defined in
the Pressure Equipment Directive: Directive 2014/68/EG. They are classified
according to Annex II, article 4, section 3. In the event of any deviations, GEA
Tuchenhagen GmbH will supply a specific Declaration of Conformity.
2.1.3
ATEX directive
In areas with an explosive atmosphere, only valves suitable for use in such areas
may be used.
Refer to and observe the additional operating instructions “ATEX version valves”.
For details regarding the marking of valves for potentially hazardous areas also
refer to the additional operating instructions “ATEX version valves”.
If these valves are used in areas with a potentially explosive atmosphere, you
must absolutely comply with directive 2014/34/EC with respect to all ignition
hazards.
2.1.4
Improper operating conditions
The operational reliability of the valve cannot be ensured under improper
operating conditions. Therefore avoid improper operating conditions.
Safety
Intended use
430BAL008451EN_2
10
24.10.2017
