ARI Armaturen STEVI 460 DN 15-250 EN - Manual

Rev. 0040304000 0410 englisch
1.0 General information on operating
instructions ..................................................... 2
2.0 Notes on possible dangers............................ 2
2.1 Significance of symbols ..........................................2
2.2 Explanatory notes on safety information .................2
3.0 Storage and transport ................................... 2
4.0 Description...................................................... 3
4.1 Scope of applications ..............................................3
4.1.1 Operating principles............................................3
4.2 Diagram ..................................................................4
4.3 Technical data .........................................................5
4.4 Marking ...................................................................5
5.0 Installation....................................................... 6
5.1 General notes on installation...................................6
5.2 Requirements at the place of installation ................7
5.3 Installation instructions concerning actuators .........7
6.0 Putting the valve into operation.................... 8
7.0 Care and maintenance................................... 9
7.1 Replacement of stem sealings ............................... 9
7.1.1 PTFE V-ring unit design..................................... 9
7.1.2 Stuffing box packing design ............................. 10
7.1.3 Bellows seal design ......................................... 12
7.2 Replacement of internal parts .............................. 14
7.2.1 Replacment of plug and stem ......................... 14
7.3 Tightening torques................................................ 15
7.3.1 Tightening torques for nuts ............................. 15
8.0 Troubleshooting ........................................... 15
9.0 Troubleshooting table ................................ 16
10.0 Dismantling the valve or the top part ...... 17
11.0 Warranty / Guarantee ................................. 17
12.0 EC declaration of conformity .................... 18
Contents
Operating and installation instructions
Straight through stop valves - STEVI
®
405 / 460
DN 15 - 250
Series 405 Series 460