
© Edwards Limited 2008. All rights reserved.
Page 23
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Operation
B064-04-880 Issue F
Figure 7 - Typical pumping system
8. Backing pump
9. Backing pump isolation valve
10. Flexible pipeline
11. Holding pump
12. Holding valve
13. 30B5M pump
1. Vacuum system
2. Vacuum system pressure gauge
3. Isolation valve
4. Air-admittance valve
5. Roughing valve
6. Backing pressure gauge
7. Backing valve