S203 Series
SECTION A-A
APPLY LUB 50A9737-F
Figure 4. Type S203 Regulator Assembly
Key
Parts List Key
1
2
Description
Part Number
Parts Kit (included are keys 5, 7A, 16, 19, 27, 78, 82, 88, 90, and 97) For S203 and S203P RS203X00012 Spring Case, aluminum Use w/1D8933 000A2 & lighter springs (S203 & S203P) 4L1423 08032 Use w/1H9758 27032 & heavier springs (S203H) 1J7186 99022 Spring, steel 2 to 4.5-inches w.c. (brown), use with light diaphragm plate 1D8925 000A2 3.5 to 6.5-inches w.c. (red), use with light diaphragm plate 1D8926 000A2 5 to 9-inches w.c. (black), use with light diaphragm plate 1D8927 000A2 8.5 to 18-inches w.c. (gray), use with light diaphragm plate 1D8932 000A2
3 4
Description 14 to 30-inches w.c. (dark green), use with heavy diaphragm plate 1 to 2 psi (dark blue), use with heavy diaphragm plate 1.5 to 2.25 psi (orange), use with heavy diaphragm plate Adjusting Screw, aluminum Closing Cap, aluminum
5* 6 7
1D8933 000A2 1H9758 27032 1H9759 27032 1L9286 08012 1L9283 08012
Closing Cap Gasket, neoprene Lower Spring Seat, aluminum Diaphragm Plate, steel Use w/1D8932 000A2 & lighter springs Use w/1D8933 000A2 & heavier springs 7A* Diaphragm, nitrile Use w/1D8933 000A2 & lighter springs (S203 & S203P) Use w/1H9758 27032 & heavier springs (S203H)
1H4462 06992 1L9287 08012
8
2H9752 08012
Pusher Post, aluminum
*Recommended spare part.
8
Part Number
1H9779 28992 1H9780 25032
1H9781 02072 1L1543 02052