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

5.4 Accessories for assembly

5.4.1 Stem protection tube for rising valve stem

NOTICE
How to proceed 1. Seal all threads with hemp, Teflon tape, sealing agent or thread sealing material.
6. Fasten screws [4] crosswise with a torque according to table
for screws [} 53].
Figure 19: Assembly of the stem protection tube
[1]
[2]
[3]
[1] Protective cap for stem protection tube
(fitted)
[1]** Option for sizes 30.1, 35.1, 40.1, 48.1:
Protective cap made of steel (welded)
[3] V-seal
Risk of bending or oscillation of protection tubes exceeding a length of 2
m!
Risk of damage at stem and/or protection tube.
à Secure protection tubes exceeding 2 m by an appropriate support.
2. Screw stem protection tube [2] into thread and tighten it firmly.
Information: For stem protection tubes made of two or more segments, all parts
have to be thoroughly screwed together.
Figure 20: Protection tube made of segments with threaded sleeves (> 900 mm) (only applic-
able for sizes 25.1 and 30.1)
[2]
[3] [4]
[2] Segment of stem protection tube
[4] Threaded sleeve
3. Push down the sealing ring [3] onto the housing.
Information: For mounting segments, push down seals of segments down to the
sleeve (connecting pieces).
[1]*
[1]**
[1]* Option for size 25.1: Protective cap
made of steel (screwed)
[2] Stem protection tube
[2]
[3] [4]
[3] V-seal
Assembly
Tightening torques
[2]
[3]
19