WIKA TC12-M - Handbuch (Seite 16)

GB
4. Design and function
14083458.01 09/2013 GB/D
WIKA operating instructions models TR12, TC12 (Ex i) 16
4.5 Tightening torques
Connection head, selectable (example)
Thread Tightening torques in Nm
Connection head material
Aluminium Stainless steel
1/2 NPT 32 35
3/4 NPT 36 40
M20 x 1.5, with counter nut 1) 23 25
M24 x 1.5, with counter nut 1) 27 30
1) only for versions with non-divisible neck tube
Tightening torques between connection head and neck tube
Tightening torques for connection to thermowell
Tightening torques for connection to neck tube
Thread Tightening torques in Nm
R 1/2 1) 50 ... 60
1) only for versions with “nipple-union-nipple” neck tube
Thread Tightening torques in Nm
1/2 NPT 35
3/4 NPT 40
G 1/2 B 35
G 3/4 B 40
M14 x 1.5 25 ... 30
M18 x 1.5 35
M20 x 1.5 35 ... 40
M27 x 2 40 ... 45
■ Only ever screw in, or unscrew, the instrument via the spanner-flats and to the prescri-
bed torque using an appropriate tool.
■ The correct torque depends on the dimensions of the connection thread and the gasket
used (form/material).
■ When screwing in or unscrewing the instrument, do not use the connection head as
contact surface.
■ When screwing in the instrument, please observe that the threads are not skewed.
4.6 Scope of delivery
Cross-check scope of delivery with delivery note.