Appendix
Service and Repair Manual
Standard tightening torques
Thread Y Form A with sealing edge Form B with sealing ring Form E with flat sealing
G 1/8A
9 Nm
7 ft-lb
18 Nm
13 ft-lb
18 Nm
13 ft-lb
G 1/4A
35 Nm
26 ft-lb
35 Nm
26 ft-lb
35 Nm
26 ft-lb
G 1/4A
35 Nm
26 ft-lb
35 Nm
26 ft-lb
35 Nm
26 ft-lb
G 3/8A
45 Nm
33 ft-lb
70 Nm
52 ft-lb
70 Nm
52 ft-lb
G 1/2A
65 Nm
48 ft-lb
140 Nm
103 ft-lb
90 Nm
66 ft-lb
G 1/2A
65 Nm
48 ft-lb
100 Nm
74 ft-lb
90 Nm
66 ft-lb
G 3/4A
90 Nm
66 ft-lb
180 Nm
133 ft-lb
180 Nm
133 ft-lb
G 1A
150 Nm
111 ft-lb
330 Nm
243 ft-lb
310 Nm
229 ft-lb
G 1 1/4A
240 Nm
177 ft-lb
540 Nm
398 ft-lb
450 Nm
332 ft-lb
G 1 1/2A
290 Nm
214 ft-lb
630 Nm
465 ft-lb
540 Nm
398 ft-lb
Tab. 68: Standard torques for imperial thread unions L series, for steel – see figure above
Standard torques for imperial thread unions S series (up to 800
bar/11603 Psi) for steel
According to ISO1179-1 / DIN 3852-T2-Form X / DIN 3852-T3-Form X BSP threading.
Information
Tolerances of the indicated tightening torques: 10 %.
Always lubricate the thread before tightening these parts (engine oil).
Thread Y Form A with sealing edge Form B with sealing ring Form E with flat sealing
G 1/4A
35 Nm
26 ft-lb
55 Nm
41 ft-lb
40 Nm
30 ft-lb
G 1/4A
35 Nm
26 ft-lb
55 Nm
41 ft-lb
40 Nm
30 ft-lb
G 3/8A
45 Nm
33 ft-lb
90 Nm
66 ft-lb
80 Nm
59 ft-lb
G 3/8A
45 Nm
33 ft-lb
90 Nm
66 ft-lb
80 Nm
59 ft-lb
G 1/2A
65 Nm
48 ft-lb
150 Nm
111 ft-lb
115 Nm
85 ft-lb
G 1/2A
65 Nm
48 ft-lb
130 Nm
96 ft-lb
115 Nm
85 ft-lb
282
© 2021 by Kohler Co. All rights reserved.
KD83V16 33525088901_2_1 EN_US
2021-07
