1. 10/12/2014 www.OperatorSchool.com 1 Vacuum Regulator Gas Feed Systems: Theory and Maintenance Thom DiGeronimo www.OperatorSchool.com Thom @ OperatorSchool.Com All Text, drawings and photographs Copyrighted 2005 by T DiGeronimo

2. 10/12/2014 www.OperatorSchool.com 2 Seminar Highlights Gases and Properties The Vacuum Regulator / Ejector Element theory and function Differences by manufacturers Work and safety practices Personnel & Equipment Safety

3. 10/12/2014 www.OperatorSchool.com 3 Chlorine Gas Properties Amber Gas & Liquid Expands 460 Times Corrosive Non Flammable Poisonous @ 3PPM Heavy Gas Will Flow Chlorine Institute

4. 10/12/2014 www.OperatorSchool.com 4 Sulphur Dioxide Gas Properties Gas & Liquid Expands many Times Corrosive Non Flammable Poisonous @ 3PPM Heavy Gas will Flow CGA makes rules Overfilled Tanks can explode !!!

5. 10/12/2014 www.OperatorSchool.com 5 Liquid to Gas Properties Coefficient of expansion Needs minimum headroom With a FULL TANK Liquid expansion at any temperature can cause the tank to fail or explode !!

6. 10/12/2014 www.OperatorSchool.com 6 Historic Chlorination Wallace & Tiernan “ Old Number 1” Circa 1913 Pressure Regulator

7. 10/12/2014 www.OperatorSchool.com 7 Proper Materials used Properly Metals / Inlet-Screws-Yoke Body & Inlet Plastics O rings Tubing Piping

8. www.OperatorSchool.com 8 Superior Vacuum Regulators

9. 10/12/2014 www.OperatorSchool.com 9 Vacuum Regulator Two Parts Separated by a Diaphragm Front is Vent Cavity Back is Vacuum Regulation Inlet Valve Mounting

10. 10/12/2014 www.OperatorSchool.com 10 Vacuum Regulator Diaphragm & Bolt Flexured Plastic Material Separates Body Cavities Front has pin for Indication and Control Back has Vent Valve Can be Spring Loaded to Inlet Valve Uses Vacuum / Barometric Pressure to Open Inlet Valve

11. 10/12/2014 www.OperatorSchool.com 11 Vacuum Regulator Diaphragm Flexured Plastic Material Separates Body Cavities Uses Vacuum / Barometric Pressure to Open Inlet Valve

12. 10/12/2014 www.OperatorSchool.com 12 Inlet Valve Assembly Grooved Body Alumina Bronze ( Better: Hastalloy C) Guts Teflon, Monel ABS / PVC Gaskets / O Rings Viton or Buna N

13. 10/12/2014 www.OperatorSchool.com 13 Inlet Valve Detail Vent Seat Vent Plug Valve Spring Assy Inlet Seat Inlet Plug Inlet Filter

14. 10/12/2014 www.OperatorSchool.com 14 Inlet Valve Detail Valve Spring Assembly Inlet Seat Inlet Plug Inlet Filter

15. 10/12/2014 www.OperatorSchool.com 15 Inlet Valve w/ Diaphragm Detail

16. 10/12/2014 www.OperatorSchool.com 16 Inlet Valve w/ Diaphragm Detail - Leak

17. 10/12/2014 www.OperatorSchool.com 17 Standard Hydro Regulator

18. 10/12/2014 www.OperatorSchool.com 18 Flowmetering w/ Ecometrics @ 500 PPD Rotameter Metering Valve

19. 10/12/2014 www.OperatorSchool.com 19 Maintenance problems 1

20. 10/12/2014 20 Maintenance problems 2

21. 10/12/2014 www.OperatorSchool.com 21 Auto-Switchover Valve

22. 10/12/2014 www.OperatorSchool.com 22 Latch – Switchover Detail 1

23. 10/12/2014 www.OperatorSchool.com 23 Latch – Switchover Detail 2

24. 10/12/2014 www.OperatorSchool.com 24 Ejector Designs ABS Body – Viton Gaskets & O Rings

25. 10/12/2014 www.OperatorSchool.com 25 Ejector Sizing Charts Proper Inlet & Outlet Pressures Proper Installation / Position

26. 10/12/2014 www.OperatorSchool.com 26 Tank Valves & Fusible Plugs for Ton’s Fusible Plugs on Both Ends of Cylinders w/ Cover – Gas / Liquid Valves – Eductor tubes >

27. 10/12/2014 www.OperatorSchool.com 27 Tank Connections w/ Flex’s Wrong way traps condensing liquid Right way drains it back to tank.

28. 10/12/2014 www.OperatorSchool.com 28 Valves & Accessories

29. 10/12/2014 www.OperatorSchool.com 29 Safety “Equipment” Required SCBA Gas Leak Detector Leak Repair Kit A or B Properly Trained Haz-Mat People A PLAN

30. 10/12/2014 www.OperatorSchool.com 30 Approved 150 lb Cylinder Storage Straps & Blocks - NO CHAINS - Straps & Rack Valve Covers on When NOT Being Used

31. 10/12/2014 www.OperatorSchool.com 31 Un-Approved 150 lb Cylinder Capture

32. 10/12/2014 www.OperatorSchool.com 32 Yoke & Inlet Valve Assembly Mounts the Regulator Inlet Valve Seals to Bottle Lead Washer Gasket

33. www.OperatorSchool.com 33 Yoke & Inlet Valve Assembly Leak Testing

34. 10/12/2014 www.OperatorSchool.com 34 Ejector Application by Diffuser Must Not Back Up Flow Must “Diffuse” the Solution in Flowstream

35. 10/12/2014 www.OperatorSchool.com 35 Typical Systems 1 -- Capital Controls

36. 10/12/2014 www.OperatorSchool.com 36 Typical Systems 2 -- Capital Controls

37. 10/12/2014 www.OperatorSchool.com 37 Typical Chlorine – Sulfur Dioxide Room

38. 10/12/2014 www.OperatorSchool.com 38 Service Systems 1 www.OperatorSchool.com www.Start-UpService.com www.PVC-Creations.com

39. 10/12/2014 www.OperatorSchool.com 39 Service Systems 2 www.OperatorSchool.com www.Start-UpService.com www.PVC-Creations.com

40. 10/12/2014 www.OperatorSchool.com 40 Where to Get More Information Chlorine Institute A.W.W.A. Manuals Manufacturers Manuals www.OperatorSchool.com www.Start-UpService.com