GEA VARIVENT K, Operating Instruction

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2 Safety
2.1 Intended use
The double seat valve K is used for the mixproof separation of cleaning media at
flow path intersections in pipe systems without the possibility of leakage chamber
cleaning. It can be used as cleaning and gas valve in CIP systems and gas
fittings.
The medium should preferably flow in the opening direction of the valve disc 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 is borne solely by the operating
company.
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 component is a piece of pressure equipment (without safety function) in the
sense of the pressure equipment directive 2014/68/EU. Classified according to
Annex II in category 1.
According to the scope of directive 2014/34/EC, article 1, paragraph 2, f, the
exception of the directive applies, due to conformity with the machine directive
2006/42/EU.
The nominal diameters smaller than DN 25 are subject to article 4, paragraph 3
of the Pressure Equipment Directive which specifies sound engineering practice.
Nominal diameters ≥ IPS 4“; DN 125 valid for the fluid group II.
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.
Safety
Intended use
430BAL008372EN_4
11.03.2022 9