1. Twinset Manifolds

2. Right postLeft post knob isolator Gas always flows cylinder KIT SET UP BEFORE DIVING 1 st stage regs GASES OFF

3. Right postLeft post Knob open Knob open Isolator open cylinder NORMAL DIVING 1 st stage regs Breathing off right hand regulator

4. You see the right reg free flow

5. Right postLeft post Knob open Knob open Isolator open cylinder RIGHT REG STARTS TO FREE FLOW 1 st stage regs

6. Right postLeft post Knob CLOSED Knob open Isolator open cylinder RIGHT REG FREE FLOW 1 st stage regs SWITCH TO LEFT REG

7. Unknown Leak 1

8. Right postLeft post Knob open Knob open Isolator open cylinder UNKNOWN GAS RELEASE 1 st stage regs Breathing off right hand regulator

9. Right postLeft post Knob open Knob open Isolator CLOSED cylinder UNKNOWN GAS RELEASE 1 st stage regs Breathing off right hand regulator CHECK SPG ON LEFT FIRST STAGE If it decreases rapidly the leak is somewhere on the left side If it remains constant the leak is on the right side

10. Right postLeft post Knob open Knob open Isolator CLOSED cylinder UNKNOWN GAS RELEASE 1 st stage regs Breathing off right hand regulator CHECK SPG ON LEFT FIRST STAGE It falls rapidly

11. Right postLeft post Knob open Knob CLOSED Isolator CLOSED cylinder UNKNOWN GAS RELEASE 1 st stage regs Breathing off right hand regulator TURN LEFT OFF

12. Right postLeft post Knob open Knob CLOSED Isolator CLOSED cylinder UNKNOWN GAS RELEASE 1 st stage regs Breathing off right hand regulator LEAK STOPS

13. Right postLeft post Knob open Knob CLOSED Isolator OPEN cylinder UNKNOWN GAS RELEASE regs Breathing off right hand regulator Leak must have been 1 st stage on left side

14. LEFT HAND LEAKS BUT IT DOESN’T STOP

15. Right postLeft post Knob open Knob CLOSED Isolator CLOSED cylinder UNKNOWN GAS RELEASE 1 st stage regs Breathing off right hand regulator LEFT CYLINDER WILL EMPTY Leak must be left side of isolator valve on where pillar valve screws into cylinder

16. Unknown Leak 2

17. Right postLeft post Knob open Knob open Isolator open cylinder UNKNOWN GAS RELEASE 1 st stage regs Breathing off right hand regulator

18. Right postLeft post Knob open Knob open Isolator CLOSED cylinder UNKNOWN GAS RELEASE 1 st stage regs Breathing off right hand regulator CHECK SPG ON LEFT FIRST STAGE If it decreases rapidly the leak is somewhere on the left side If it remains constant the leak is on the right side

19. Right postLeft post Knob open Knob open Isolator CLOSED cylinder UNKNOWN GAS RELEASE 1 st stage regs Breathing off right hand regulator CHECK SPG ON LEFT FIRST STAGE No movement

20. Right postLeft post Knob CLOSED Knob open Isolator CLOSED cylinder UNKNOWN GAS RELEASE regs Switch to left hand regulator Breathing off LEFT cylinder only

21. Right postLeft post Knob CLOSED Knob open Isolator OPEN cylinder UNKNOWN GAS RELEASE regs Breathe off left hand regulator Breathing off BOTH cylinders

22. Right postLeft post Knob CLOSED Knob open Isolator OPEN cylinder UNKNOWN GAS RELEASE regs Breathe off left hand regulator Breathing off BOTH cylinders Leak must have been 1 st stage on right side

23. Somebody lifts twinset by manifold

24. Right postLeft post knob isolator Gas always flows cylinder KIT SET UP BEFORE DIVING 1 st stage regs GASES OFF

25. Right postLeft post knob isolator cylinder 1 st stage regs GASES OFF

26. Right postLeft post knob Isolator OFF cylinder 1 st stage regs GASES OFF RIGHT CYLINDER WILL EMPTY YOU’VE SAVED THE LEFT

27. WORSE STILL – YOU BREAK THE MIDDLE Somebody carries the twinset by the manifold You bump the manifold inside a wreck

28. Right postLeft post knob isolator cylinder 1 st stage regs Doesn’t matter if isolator valve is OPEN or SHUT YOU LOSE ALL GASES FROM BOTH CYLINDERS

29. RESULT ? You bump the manifold inside a wreck Somebody carries the twinset by the manifold THEY DIE !! YOU DIE !!!!