4 recommended spares, 5 fastener torques – Flowserve WUC Worthington User Manual
Page 36
WUC USER INSTRUCTIONS ENGLISH - 07/14
Page 36 of 52
Any change to the original design specification
(modification or use of a non-standard parts) will
invalidate the pump’s safety certification.
6.3.2 Storage of spares
Spares should be stored in a clean dry area away from
vibration. Inspection and retreatment of metallic
surfaces (if necessary) with preservative is
recommended at a 6 monthly interval.
6.4 Recommended spares
Spares Recommended
Part
Start up
Normal Maintenance
No.of identical pumps
1 - 3
4 - 6
7+
1 - 3
4 - 6
7 - 9
10+
Element (if unspared) (1)
1
1
1
1
Rotor
1
1
1
1
Case
1
Head (case cover and stuffing box)
1
Motor stool
1
Shaft (w/key)
1
1
2
1
Impeller
1
1
2
3
Wear rings (set)
1
1
1
1
1
2
3
Bearings complete (antifriction,radial)
1
2
3
1
2
3
3
Bearings complete (antifriction,thrust)
1
2
3
1
2
3
3
Bearing pads only (hydrodynamic,thrust)
1
1
1
1
1
1
5
Mechanical seal complete (Cartridge)
1
2
3
1
2
3
3
Shaft sleeve
1
2
3
1
2
3
3
Gaskets, O-rings (set)
1
2
3
1
2
3
3
Bearing bushings and sleeves (set)
1
1
2
1
1
3
3
Stage bushings and sleeves (set)
1
1
2
1
1
3
3
(1) Vital service pumps are generally unspared, partially spared or multistage. When a vital machine is down, production loss or
violation of environmental permits results. Element consist of assembled rotor plus stationary hydraulic parts (diffuser(s) or
volute(s)).
6.5 Fastener torques
Tightening Torque M
A
Nm (lbf.ft)
Duplex SS
Carbon Steel
Austenitic SS
Size
of
Screw
S32760,
S31803,
1.4462
A193 B7M,
A320 L7M
(NACE)
A193 B7,
A320 L7,
8.8
3.6
4.6
10.9
A193 B8M
Cl2
A4-70,
A2-70
A193
B8/B8M,
A193 B8MA
(NACE)
A2-50,
A4-50
[Nm]
[lbf.ft]
[Nm]
[lbf.ft]
[Nm]
[lbf.ft]
[Nm]
[lbf.ft]
[Nm]
[lbf.ft]
[Nm]
[lbf.ft]
[Nm] [lbf.ft] [Nm] [lbf.ft] [Nm] [lbf.ft]
M4
2.1
(1.5)
4.2
(3.1)
3
(2.2)
0.8
(0.6)
1.1
(0.8)
4.6
(3.4)
3.2
(2.4)
1.9
(1.4)
0.9
(0.7)
M5
4.1
(3)
8.3
(6.1)
5.9
(4.4)
1.6
(1.2)
2.2
(1.6)
8.6
(6.3)
6.4
(4.7)
3.6
(2.7)
1.6
(1.2)
M6
7.1
(5.2)
14.2
(10.5)
10.1
(7.4)
2.8
(2.1)
3.7
(2.7)
14.9
(11)
10.9
(8)
6.3
(4.6)
2.9
(2.1)
M8
17
(12.5)
35
(26)
24.6
(18.1)
6.8
(5)
9.1
(6.7)
36
(27)
27
(19.9)
15
(11.2)
7.1
(5.2)
M10
34
(25)
68
(50)
48
(35)
13.7
(10.1)
18.3
(13)
71
(52)
52
(38)
30
(22)
14
(10.3)
M12
59
(44)
118
(87)
84
(62)
23
(17)
31
(23)
123
(91)
91
(67)
51
(38)
24
(17.7)
M14
94
(69)
187
(138)
133
(98)
37
(27)
50
(37)
195
(144)
143
(105)
82
(60)
38
(28)
M16
145
(107)
290
(214)
206
(152)
57
(42)
76
(56)
302
(223)
222
(164)
126
(93)
58
(43)
M18
201
(148)
335
(247)
295
(218)
80
(59)
106
(78)
421
(311)
308
(227)
176
(130)
82
(60)