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5/4/2015 1 Vacuum Regulator Gas Feed Systems: Theory and Maintenance Thom DiGeronimo OperatorSchool.Com.

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Presentation on theme: "5/4/2015 1 Vacuum Regulator Gas Feed Systems: Theory and Maintenance Thom DiGeronimo OperatorSchool.Com."— Presentation transcript:

1 5/4/ Vacuum Regulator Gas Feed Systems: Theory and Maintenance Thom DiGeronimo OperatorSchool.Com All Text, drawings and photographs Copyrighted 2005 by T DiGeronimo

2 5/4/ Seminar Highlights Gases and Properties The Vacuum Regulator / Ejector Element theory and function Differences by manufacturers Work and safety practices Personnel & Equipment Safety

3 5/4/ Chlorine Gas Properties Amber Gas & Liquid Expands 460 Times Corrosive Non Flammable 3PPM Heavy Gas Will Flow Chlorine Institute

4 5/4/ Sulphur Dioxide Gas Properties Gas & Liquid Expands many Times Corrosive Non Flammable 3PPM Heavy Gas will Flow CGA makes rules Overfilled Tanks can explode !!!

5 5/4/ 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 5/4/ Historic Chlorination Wallace & Tiernan “ Old Number 1” Circa 1913 Pressure Regulator

7 5/4/ Proper Materials used Properly Metals / Inlet-Screws-Yoke Body & Inlet Plastics O rings Tubing Piping

8 8 Superior Vacuum Regulators

9 5/4/ Ejector Designs ABS Body – Viton Gaskets & O Rings

10 5/4/ Ejector Sizing Charts Proper Inlet & Outlet Pressures Proper Installation / Position

11 5/4/ Vacuum Regulator Two Parts Separated by a Diaphragm Front is Vent Cavity Back is Vacuum Regulation Inlet Valve Mounting

12 5/4/ 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

13 5/4/ Vacuum Regulator Diaphragm Flexured Plastic Material Separates Body Cavities Uses Vacuum / Barometric Pressure to Open Inlet Valve

14 5/4/ Inlet Valve Assembly Grooved Body Alumina Bronze ( Better: Hastalloy C) Guts Teflon, Monel ABS / PVC Gaskets / O Rings Viton or Buna N

15 5/4/ Inlet Valve Detail Vent Seat Vent Plug Valve Spring Assy Inlet Seat Inlet Plug Inlet Filter

16 5/4/ Inlet Valve Detail Valve Spring Assembly Inlet Seat Inlet Plug Inlet Filter

17 5/4/ Inlet Valve w/ Diaphragm Detail

18 5/4/ Inlet Valve w/ Diaphragm Detail - Leak

19 5/4/ Standard Hydro Regulator

20 5/4/ Flowmetering w/ 500 PPD Rotameter Metering Valve

21 5/4/ Maintenance problems 1

22 5/4/ Maintenance problems 2

23 5/4/ Auto-Switchover Valve

24 5/4/ Latch – Switchover Detail 1

25 5/4/ Latch – Switchover Detail 2

26 5/4/ Tank Valves & Fusible Plugs for Ton’s Fusible Plugs on Both Ends of Cylinders w/ Cover – Gas / Liquid Valves – Eductor tubes >

27 5/4/ Tank Connections w/ Flex’s Wrong way traps condensing liquid Right way drains it back to tank.

28 5/4/ Valves & Accessories

29 5/4/ Safety “Equipment” Required SCBA Gas Leak Detector Leak Repair Kit A or B Properly Trained Haz-Mat People A PLAN

30 5/4/ Approved 150 lb Cylinder Storage Straps & Blocks - NO CHAINS - Straps & Rack Valve Covers on When NOT Being Used

31 5/4/ Un-Approved 150 lb Cylinder Capture

32 5/4/ Yoke & Inlet Valve Assembly Mounts the Regulator Inlet Valve Seals to Bottle Lead Washer Gasket

33 33 Yoke & Inlet Valve Assembly Leak Testing

34 5/4/ Ejector Application by Diffuser Must Not Back Up Flow Must “Diffuse” the Solution in Flowstream

35 5/4/ Typical Systems 1 -- Capital Controls

36 5/4/ Typical Systems 2 -- Capital Controls

37 5/4/ Typical Chlorine – Sulfur Dioxide Room

38 5/4/ Service Systems 1

39 5/4/ Service Systems 2

40 5/4/ Where to Get More Information Chlorine Institute A.W.W.A. Manuals Manufacturers Manuals


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