Corken D791 - Page 35

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O-ring Code
A Buna-N
B Neoprene
®f
D Viton
®f
E PTFE
K Kalrez
®f
Ref
No.
Part No. Description
1. 3665 Adjusting screw nut
2. 2-127
a
O-ring
3. 3867 Cylinder cap
4. 2-250
a
O-ring
5. 3663 Adjusting cup
6. 2-248
a
O-ring
7. 3876 Cylinder head (6")
8. 2-258 O-ring
9. 7001-050-NC150A
Bolt (1/2–13x1-1/2" hex hd gr 5)(Torque
to 65 ft•lbs)
10. 3877 Cylinder head (3-1/4")
11. 2-236
a
O-ring
12. 2598-1
c
Unloader cap
13. 2-031
a
O-ring
14. 3696
c
Unloader piston (6")
14-1. 2618
c
Unloader piston (3-1/4")
15. 2715 Holddown screw
16. 7001-043-NC150A
Bolt (7/16–14x1-1/2" hex hd)(Torque to
37 ft•lbs)
17. 1764 Valve cover plate
18. 2-235
a
O-ring
19. 3570-1 Valve cage
20. 3694
c
Actuator
21. 3695
c
Spring
22. 3694-X Unloader assembly (6")
23. 3732-X Suction valve assembly (6")
24. 2114
b
Valve gasket
25. 2714-1 Valve cap
26. 3733-X Discharge valve assembly (6")
27. 2205 Valve cover plate
28. 2-143
a
O-ring
29. 3569 Valve cage
30. 3689
c
Actuator
Ref
No.
Part No. Description
31. 3690
c
Spring
32. 3689-X Unloader assembly (3-1/4")
33. 2438-X Suction valve assembly (3-1/4")
34. 1418-2
b
Valve gasket
35. 2439-X Discharge valve assembly (3-1/4")
36. 3827 Valve seat (6")
37. 3828 Stud
38. 3830
d
Outer valve plate
39. 3831
d
Inner valve plate
40. 3829
d
Spring
41. 3805-X1 Valve repair kit
42. 3826 Valve bumper (6")
43. 2446 Bolt
44. 2438 Suction valve seat (3-1/4")
45. 2442 Valve plate
46. 2445
e
Spacer (two per valve)
47. 3355 Washer
48. 1407 Spring
49. 2440 Suction valve bumper (3-1/4")
50. 2441 Discharge valve bumper (3-1/4")
51. 2439 Discharge valve seat (3-1/4")
52. 1910
c
Bolt
53. 2619-X
c
Unloader piston seal assembly
54. 2857
c
Unloader piston cap
55. 2858
c
Gasket
a
_ denotes O-ring code. See O-ring chart
for details.
b
Included with valve assembly.
c
Included with unloader assembly.
d
Included with valve repair kit.
e
Install spacers back to back.
f
Registered trademark of the DuPont
company.
First Stage Valve Assembly (6")
Suction Discharge
Second Stage Valve Assembly (3-1/4")
Suction Discharge
Appendix E—D791 and T791 Head and Valve Holddown Assembly Details
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