Operation and Maintenance Manual
Standard torques
Imperial flange joints, series S (heavy)
Tube
diameter X
Thread Y
Form A with sealing ring Form B with edge seal Form E with flat (ED) seal
Nm ft lb Nm ft lb Nm ft lb
6 G 1/4A 35 26 55 41 40 29
8 G 1/4A 35 26 55 41 40 29
10 G 3/8A 45 33 90 66 80 59
12 G 3/8A 45 33 90 66 80 59
14 G 1/2A 65 48 150 110 115 85
16 G 1/2A 65 48 130 96 115 85
20 G 3/4A 90 66 270 200 180 130
25 G 1A 150 110 340 250 310 230
30 G 1 1/4A 240 180 540 400 450 330
38 G 1 1/2A 290 210 700 520 540 400
Tab. 43
Tube
diameter X
Thread Y
WH TH SWVE
Nm ft lb Nm ft lb Nm ft lb
6 G 1/4A 45 33 45 33 40 29
8 G 1/4A 45 33 45 33 40 29
10 G 3/8A 70 52 70 52 65 48
12 G 3/8A 70 52 70 52 65 48
14 G 1/2A 120 88 120 88 90 66
16 G 1/2A 120 88 120 88 90 66
20 G 3/4A 230 170 230 170 125 92
25 G 1A 320 240 320 240
30 G 1 1/4A 540 400 540 400
38 G 1 1/2A 700 520 700 520
Tab. 44
7.1.5 Metric flange joints, series L (light) for aluminum
Tube
diameter X
Thread Y
Form A with sealing ring Form B with edge seal Form E with flat (ED) seal
Nm ft lb Nm ft lb Nm ft lb
6 M 10 x 1.0 15 11 12 8.8
8 M 12 x 1.5
10 M 14 x 1.5 30 22 30 22
12 M 16 x 1.5 40 29 40 29 40 29
15 M 18 x 1.5
18 M 22 x 1.5 80 59 80 59
104
© 2017 by Kohler Co. All rights reserved.
KD27V12 33521029401_3_1 en 2017-07-01