Figure 4-1. First Stage Regulator (P/N 1088-00 and P/N 1077-00)

TB 5-4220-200-12-1

1. Decal

2. Knob

3. Cap assembly

4. Cap assembly O-Ring

5. Yoke retainer

6. Yoke

7. Filter retainer ring

8. Filter

9. Filter assembly spring

10. Spring block

11. Back-up ring

12. Spring block O-Ring

13. Disc & retainer spring

14. Disc & retainer

15. Regulator body

16. Plug screw O-Ring

17. Plug screw

18. Plug screw (auxiliary)

19. Plug screw O-Ring (auxiliary)

20. Disc & retainer pin

21. Pin support

22. Diaphragm

23. Diaphragm gasket

24. Diaphragm spring pad

25. Adjustment spring

26. Spring retainer

27. Adjusting screw

28. Secondary diaphragm

29. Retainer ring

30. High pressure adapter

31. Yoke retainer ring

Figure 4-1. First Stage Regulator (P/N 1088-00 and P/N 1077-00)

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