wT 1255/12
Page 11
7.3
Tightening Torques
The values provided below are approximations and valid for lubricated stud bolts and
nuts. Valves, which have already been in operation over longer periods of time, and
already show wear and tear on the sealing surfaces and/or are not tight at higher
pressures due to gaseous media, can be made tight again by retightening the bonnet
securing nut (Pos. 27). The tightening torques may only be exceeded by max. 40 % in
such cases.
Bonnet securing nut (Pos. 27)
Stud bolt
Tightening torque (Nm)
Nominal size Dimension Pcs.
KX-GT
65 / 2 ½“
M 16 x 55
4
25
80 / 3“
M 16 x 55
6
20
100 / 4“
M 16 x 60
8
25
125
M 20 x 75
6
25
150 / 6“
M 20 x 75
8
25
200 / 8“
M 24 x 75
8
50
Gland retainer securing nut (Pos. 29)
Hex nut
Tightening torque (Nm)
Nominal size
Dimension
Pcs.
KX-GT
65 - 200 / 2 ½“ - 8“ M 10 x 65
2
15
Handwheel nut (Pos. 30)
Nut
Tightening torque (Nm)
Nominal size
Dimension
Pcs.
65 – 200 / 2 ½“ – 8“
M12
1
12
7.4
Table of Weights
Nominal size
Weight
65 / 2 ½“
25.5 kg
80 / 3“
33 kg
100 / 4“
46 kg
125
72.5 kg
150 / 6“
102.5 kg
200 / 8“
178 kg