ARI Armaturen STEVI 460 DN 15-250 EN - Manual (Page 10)

Page 10 Rev. 0040304000 0410
Operating and installation instructions
Straight thr. stop valves - STEVI
®
405 / 460 (DN15-250)
7.1.2 Stuffing box packing design
The stuffing box packing (pos. 27) requires maintenance.
If leaks develop, immediately tighten the screw joint (pos. 29) respectively the nuts
(pos. 35) gradually until the packing (pos. 27) stops leaking.
The service life of stuffing box packings (pos. 27) can be increased by checking regularly
leakage.
If leaks can no longer be stopped by tightening the screw joint (pos. 29) respectively the
nuts (pos. 35), a new packing ring (pos. 27) must be inserted into the gland.
Replacement of stuffing box packings:
- Remove actuator. (Refer to operating instructions for actuator!)
- Insert new packing ring (pos. 27) as shown in Fig. 10 - Fig. 13.
ATTENTION !
Refer to item 10.0 and 11.0 before dismantling the valve.
Fig. 10: Stuffing box packing DN15-100 Fig. 11: Stuffing box packing DN125-150