Flowserve Valtek FlowTop V746, Инструкция пользователя

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Valtek FlowTop General Service Valve FCD VLENIM8610A4 11/18
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NOTICE
Exercise care with a pressure bal-
anced plug design. While removing
the pressure balanced plug, the retainer may stick to
the bonnet then become detached while lifting the plug
and stem out of the valve. Secure the seat retainer as
you remove the plug and stem.
7. Remove the bonnet gasket (58) and seat retainer gas-
ket (56).
8. Remove the seat retainer (30), seat ring (20) and pro-
file ring (55).
9. Remove the plug assembly (50) from the bonnet (40).
10. Use the Packing Driver Tool (See Section 16: Special
Tools) to remove the packing box ring (93), packing
(88) and the upper guiding (87) (Details see Parts List
- Packing Details).
11. Use a standard brass scraper or other suitable tool to
remove all old gasket material; then clean the gasket
surfaces.
NOTICE
Examine the valve trim and bonnet
components. If the nominal and ac-
tual values differ by more than 5% a control valve
overhaul may be required (See Point 8, Page 9).
12. Check stressed surface areas for damage such as
scoring and deformities.
13. Use a standard brass scraper or other suitable tool to
clean bolting. Check for corrosion or any other damage.
Reassembly instructions of the valve body
assembly.
14. Lubricate all bolt and screw threads and bearing sur-
faces (stem, underside of the nuts) with a suitable, ap-
proved lubricant (See Section 15: Lubricants).
NOTICE
Never allow lubricants to come in contact
with the bonnet or sealing surfaces.
15. Install a new profile ring (55) and seat ring (20).
16. Lower the seat retainer (30) into the body and place it
on top of the seat ring (See Figure 9).
17. Lower the plug assembly (50) into the body with the
plug touching the seat ring surface.
80
138
87
88
93
114
40
58
51
52
50
56
30
20
55
108
1
Figure 9: Disassemble / Reassemble the valve
Item Part Item Part
1 Body 58 Bonnet gasket
20 Seat ring 65 O-ring
(Figure 10)
30
Seat retainer 66 Backup ring
(Figure 10)
Sleeve
(Figure 10)
80 Packing follower
40 Bonnet 87 Upper guiding
50 Plug 88 Packing
51 Stem 93 Packing box ring
52 Lock bushing 108 Stud bolt
55 Profile ring 114 Hex nut
56 Seat retainer gasket 138 Belleville spring
Table 11: Valve parts