(GB-IST-ZQ-0413) 2/36
The Company BARDIANI VALVOLE reserves the right to modify its products at any time without prior notice.
Foreword
This instruction manual is an integral part of the valve delivery.
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To use the Atex valve model is obligatory to consult the appropriate manual.
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Always read it carefully before using the valve.
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Always keep it for future reference.
All rights are reserved. It is forbidden to reproduce or transit any part of the instruction manual by any
means, either electronic or mechanical, including photo copies, recording or any other memorisation or
retrieval system for purposes other than the exclusively personal use by the purchaser – without prior
written permission by the manufacturer.
This instruction manual is expressly intended for use by technicians. Therefore, some information which
can easily be inferred by reading the text and examining the illustrations and drawings has not been
further specified. The publisher is not responsible for any consequences of incorrect operations by the
user.
The data and information in this instruction manual are subject to modifications or updates without any
further notice or obligations on the part of the manufacturer.
Index
1. Safety signs .................................................................................................................................. 3
2. General safety precautions .......................................................................................................... 3
3. Receiving /Unpacking/Storage ..................................................................................................... 4
4. Installation .................................................................................................................................... 5
5. Operation ..................................................................................................................................... 6
6. Troubleshooting ........................................................................................................................... 8
7. Cleaning ....................................................................................................................................... 9
8. General Maintenance ................................................................................................................... 10
9. Planned Maintenance ................................................................................................................... 11
10. Spare parts ordering ..................................................................................................................... 12
11. Disassembly of valve type ............................................................................................................ 13
Drawings ..................................................................................................................................... 16
12. Assembly of valve type ZQ-YQ .................................................................................................... 18
13. Disassembly of divert valve type ZQ-YQ ..................................................................................... 21
Drawings divert ............................................................................................................................. 25
14. Assembly of divert valve type ZQ-YQ ......................................................................................... 27
15. Disassembly of valve type ZU ....................................................................................................... 30
Drawings ...................................................................................................................................... 31
16. Assembly of valve type ZU ........................................................................................................... 32
17. Part list ......................................................................................................................................... 34
18. Technical data ............................................................................................................................... 35
Warranty ............................................................................................................................................. 36
Disclaimer ........................................................................................................................................... 36