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thuba SV21 Manuel page 5

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Manual BVS 21 ATEX E 070
Safety valve SV21 for explosionprotected
enclosures and equipment
Target group
Experienced qualified electricians in accordance
with the occupational health and safety decree
and trained persons.
Content
1.
Safety instructions
2.
Conformity with standards
3.
Technical data
4.
Installation
5.
Inspection
6.
Disposal
1.
Safety instructions
The SV21 safety valve has been designed in
such a way that there is no build-up of pressure
inside enclosures or equipment. The valve ball
opens when the internal pressure reaches 5
mbar. Use in Zones 1, 2, 21 and 22 is possible.
The safety valve SV21 shall only be used for the
intended purpose and in an undamaged state.
The safety valve must not be opened or altered.
Whenever work is carried out, the following
safety instructions that, like this text, are set
in italics shall be observed!
2.
Conformity with standards
The safety valve meets the requirements of IEC
60079-0:2018, IEC 60079-7:2015 and IEC
60079-31:2014. It was designed, manufactured
and tested according to the state of the art and
ISO 9001:2015.
Edition August 2022
Copyright
thuba Ltd., CH-4002 Basel
Switzerland
3

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