Accessories For Assembly; Stem Protection Tube For Rising Valve Stem - AUMA SA 25.1 Operating Instructions Manual

Assembly
4.4.

Accessories for assembly

4.4.1.

Stem protection tube for rising valve stem

20
SA 25.1 SA 48.1/SAR 25.1
2. Check if output drive of multi-turn actuator [1] matches the output drive of
valve/gearbox or valve/gearbox valve shaft [2/3].
3. Apply a small quantity of grease to the valve or gearbox shaft [3].
4. Fit multi-turn actuator [1].
Information: Ensure that the spigot fits uniformly in the recess and that the
mounting faces are in complete contact.
5. Fasten multi-turn actuator with screws according to table.
Information: We recommend applying liquid thread sealing material to the
screws to avoid contact corrosion.
6. Fasten screws crosswise to a torque according to table.
Table 8:
Tightening torques for screws
Threads
M16
M20
M30
M36
Figure 18: Assembly of the stem protection tube
[1] Protective cap for stem protection tube (fitted)
[1]* Option for size 25.1: Protective cap made of steel (screwed)
[1]** Option from size 30.1: Protective cap made of steel (welded)
[2] Stem protection tube
[3] V-seal
1. Seal all threads with hemp, Teflon tape, or thread sealing material.
SAR 30.1 Control unit: electronic (MWG)
AC 01.2 Non-Intrusive Modbus RTU
Tightening torque [Nm]
Strength class
8.8
214
431
1,489
2,594
A2-80
200
392
1,422
2,481