GEA VARIVENT X R Series, Operating Instructions Manual

Page: 13 / 104

2 Safety
This chapter describes the minimum requirements for the intended use of the valve. It
forms the basis for safe operation of the valve.
2.1 Intended use
The Shuttle Valve Type X_R is used for the distribution of streams of liquid within a sec-
tion of a pipe.
Proper use of the valve also includes compliance with these Operating Instructions.
The medium should preferably flow in the opening direction of the valve disk to avoid
pipe hammers when the valve is opened or closed.
In a closed pipe system, hydraulic pressure build-up may occur when the valve switches
and result in seal damage.
INFO
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 the operation
The prerequisite for the reliable and safe operation of the valve 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, maintenance
and servicing instructions.
2.1.2 Pressure equipment directive
The valve 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 excep-
tion of the directive applies, due to conformity with the Machinery Directive
2006/42/EC.
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 special Declara-
tion 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 instruction manual “ATEX version valves”. For de-
tails regarding the marking of valves for potentially hazardous areas also refer to the
additional instruction manual “ATEX version valves”.
If these valves are used in areas with a potentially explosive atmosphere, it is mandatory
to comply with directive 2014/34/EC with respect to all ignition hazards.
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