Keofitt W9 - Page 6

KEOFITT W9 USER MANUAL V.4 PAGE 6
10.2 Before welding ................................................................................................................................32
11. WELDING INSTRUCTIONS ................................................................................................... 33
11.1 Welding method ..............................................................................................................................33
11.2 Guideline welding values ...............................................................................................................33
12. BLOCK DIAGRAMS ............................................................................................................. 34
12.1 Keott valve type T (tank) ..............................................................................................................34
12.2 Keott valve type P (pipe) ..............................................................................................................34
12.3 Keott valve type P (pipe connection vertical) Inline ...................................................................35
12.4 Keott valve type clamp connection .............................................................................................35
12.5 Keott valve type Varivent® ............................................................................................................36
12.6 Keott valve type thread ................................................................................................................36
13. MAINTENANCE .................................................................................................................. 37
13.1 Maintainance ..................................................................................................................................37
13.2 Spare parts list ................................................................................................................................37
13.3 Disassembly and assembly of valve body and head .....................................................................38
13.4 Replacing a rubber membrane ......................................................................................................39
13.5 Replacing a PTFE membrane ........................................................................................................40
13.6 Regrease the head spindle ............................................................................................................41
14. FAILURE MODES ............................................................................................................... 42
14.1 Broken membrane tip: ...................................................................................................................42
14.2 Broken membrane side:.................................................................................................................42
14.3 Cleaning the valve aer a failure: ..................................................................................................42
15. CHANGE FROM SILICONE/EPDM/FFKM TO PTFE MEMBRANE .................................................. 43
16. MEMBRANES ..................................................................................................................... 44
16.1 Silicone membrane - art. no. 600051 .............................................................................................44
16.2 Silicone membrane for Micro Port - art. no. 600251 ......................................................................45
16.3 EPDM membrane - art. no. 600052.................................................................................................46
16.4 EPDM membrane for Micro Port - art. no. 600252 .........................................................................47
16.5 FFKM membrane - art. no. 600053 .................................................................................................48
16.6 PTFE membrane - art. no. 850055 ..................................................................................................49