Xylem Flygt 3102 Series User Manual

6.2 Torque values
All screws and nuts must be lubricated to achieve correct tightening torque. Screws that
are screwed into stainless steel must have the threads coated with suitable lubricants to
prevent seizing.
If there is a question regarding the tightening torques, then contact a sales or authorized
service representative.
Screws and nuts
Table 1: Stainless steel, A2 and A4, torque Nm (ft-lbs)
Property class
M4 M5 M6 M8 M10 M12 M16 M20 M24 M30
50 1.0
(0.74)
2.0
(1.5)
3.0
(2.2)
8.0
(5.9)
15
(11)
27
(20)
65
(48)
127
(93.7)
220
(162)
434
(320)
70, 80 2.7
(2)
5.4
(4)
9.0
(6.6)
22
(16)
44
(32)
76
(56)
187
(138)
364
(268)
629
(464)
1240
(915)
100 4.1
(3)
8.1
(6)
14
(10)
34
(25)
66
(49)
115
(84.8)
248
(183)
481
(355)
— —
Table 2: Steel, torque Nm (ft-lbs)
Property class
M4 M5 M6 M8 M10 M12 M16 M20 M24 M30
8.8 2.9
(2.1)
5.7
(4.2)
9.8
(7.2)
24
(18)
47
(35)
81
(60)
194
(143)
385
(285)
665
(490)
1310
(966.2)
10.9 4.0
(2.9)
8.1
(6)
14
(10)
33
(24)
65
(48)
114
(84)
277
(204)
541
(399)
935
(689)
1840
(1357)
12.9 4.9
(3.6)
9.7
(7.2)
17
(13)
40
(30)
79
(58)
136
(100)
333
(245)
649
(480)
1120
(825.1)
2210
(1630)
Table 3: Brass, torque Nm (ft-lbs)
M5 M8 M10
2.7 (2.0) 11
(8.1)
22
(16.2)
Hexagon screws with countersunk heads
For hexagon socket head screws with countersunk head, maximum torque for all property
classes must be 80% of the values for property class 8.8 above.
6.3 Change the oil
This image shows the plugs that are used to change the oil.
6 Maintenance
44 Flygt 3102 Installation, Operation, and Maintenance Manual

Xylem Flygt 3102 Series Specifications

General

Brand	Xylem
Model	Flygt 3102 Series
Category	Water Pump
Language	English