Corken WFD551, Original Instructions Manual

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2nd Stage Suction
(Specification 6P—Reverse Unloader)
2nd Stage Suction
(Specification 4P—Standard)
2nd Stage Discharge
(All Specifications)
1
2
3
4
5
6
7
8
9
10
11
10
12
13
14
16
17
18
19
20
21
22
23
24
14
16
17
18
19
22
23
23
25
19
24
14
16
18
15
15 15
Spring down
Spring down
Spring up
WARNING
Always relieve pressure in the unit before attempting
any repairs.
Appendix E—2nd Stage Valve Assembly Details for Model WFD551
Ref
No.
Part No. Description Qty.
1. 7002-025TP125A Socket head 1/4"-20 x 1-1/4" 6
2. 5275 Unloader body cap (spec 6P) 2
3. 5277 Unloader spring (spec 6P) 2
4. 7002-025NC037A Socket head 1/4"-20 x 3/8" 1
5. 5272 Unloader piston cap 1
6. 5279-X Piston seal assembly 1
7. 5276 Unloader piston (spec 6P) 1
8. 5000-87SS Retainer ring 1
9. 5280 Unloader washer 1
10. 5278-X Piston seal assembly 2
11. 5345 Unloader body (spec 6P) 1
12. 5281 Unloader washer 1
13. 5000-150SS Retainer ring 1
14. 2-031_
a
O-ring 2
15. 7001-043NC125A Hex head 7/16-14 x 1-1/4" 8
16. 2715 Valve hold-down screw 2
17. 1763 Cover plate 1
18. 2-143_
a
O-ring 2
19. 5319-1 Valve cage 2
20. 5320 Unloader actuator (spec 6P) 1
21. 5284 Actuator spring (spec 6P) 1
22. 5311-3X2 Suction valve assembly 1
23.
1418-2 Valve gasket (iron-lead standard) 2
1418-1 Valve gasket (copper optional) 2
1418 Valve gasket (aluminum optional) 2
24. 2714-1 Valve cap (spec 4P and discharge) 2
25. 5318-3X2 Discharge valve assembly 1
Head and Valve Assembly Bill of Materials
29