ARI Armaturen STEVI 460 DN 300-500 EN - Manual

Rev. 0040304002 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
4.2 Operating principles ................................................3
4.3 Diagram ..................................................................4
4.4 Technical data .........................................................6
4.5 Marking ...................................................................6
5.0 Installation....................................................... 7
5.1 General notes on installation...................................7
5.2 Requirements at the place of installation ................8
5.3 Installation Instructions concerning actuators .........8
6.0 Putting the valve into operation.................... 9
7.0 Care and maintenance................................... 9
7.1 Replacement of stem sealings ............................... 9
7.1.1 EPDM-ring stem sealing design ....................... 9
7.1.2 Stuffing box packings design ........................... 10
7.1.3 Bellows seal design ..........................................11
7.2 Replacement of internal parts .............................. 12
7.2.1 Replacement of plug and stem ........................ 12
7.2.2 Replacement of the seat ring........................... 12
7.3 Tightening torques................................................ 13
7.3.1 Tightening torques for nuts ............................. 13
7.3.2 Tightening torques for seatrings ..................... 13
8.0 Troubleshooting ........................................... 13
9.0 Troubleshooting table ................................ 14
10.0 Dismantling the valve or the top part ...... 15
11.0 Warranty / Guarantee ................................. 15
12.0 EC declaration of conformity .................... 16
Contents
Operating and installation instructions
Straight through stop valves - STEVI
®
405 / 460
DN 300 - 500
Series 405 Series 460