Appendix E—Parts Details for 291 and F291 Head and Valve Assembly
Head and Valve Bill of Materials
Ref
No.
Part No. Description Qty.
1.
2912 Head (model 291) 1
2912-X1
Head assembly
(model 291, spec 3)
1
2912-X2
Head assembly
(model 291, spec 4)
1
2. 4300
Head
(model F291, Class 300 RF flange)
1
3.
7001-037NC100A Bolt (hex head, 3/8-16 x 1-1/4") 4
720 6- 037A Lock washer 4
4.
2731 Center headbolt 2
2732 Gasket (center headbolt) 2
5. 2-235_
a
O-ring 2
6. 2-113 _
a
O-ring 1
7. 2714-1 Valve cap 4
8. 2-031_
a
O-ring 4
9. 2715 Holddown screw 4
10. 3483-1X
Suction valve assembly
(aluminum, spec 3)
2
11. 3483-X
Suction valve assembly
(aluminum, spec 4)
2
12. 3485-X
Discharge valve assembly
(aluminum, all specs)
2
13. 2717 Valve gasket (aluminum) 4
14. 5000-77 Retainer ring (spec 3) 2
15. 3977 Suction valve relief housing 2
16. 1411 Spring (spec 3) 2
17. 1410 Ball (spec 3) 2
18. 3483-1 Suction valve seat (spec 3) 2
19. 3972 Suction valve plate 2
20. 4009 Suction spring 2
21. 3484 Suction valve bumper 2
22. 3483 Suction valve seat (spec 4) 2
23. 3486 Discharge valve bumper 2
24. 4008 Discharge spring 2
25. 3973 Discharge valve plate 2
26. 3485 Discharge valve seat 2
a
_ denotes material code. See material code chart for
details.
b
Registered trademark of the DuPont company.
Material Code
A Buna-N
B Neoprene
®b
67
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