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Operating and installation instructions
Straight through control valves - STEVI
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
4.3.1 Plug design ........................................................4
4.4 Technical data .........................................................5
4.5 Marking ...................................................................5
5.0 Installation....................................................... 5
5.1 General notes on installation...................................5
5.2 Requirements at the place of installation ................6
6.0 Putting the valve into operation.................... 7
Series 422
Contents
Rev. 0040307000 0410 englisch
Series 462
7.0 Care and maintenance................................... 8
7.1 Replacement of stem sealings ............................... 8
7.1.1 Stuffing box packing design ............................... 8
7.1.2 Bellows seal design ........................................... 9
7.2 Replacement of internal parts ............................. 10
7.2.1 Replacement of plug and stem ....................... 10
pressure balanced plugs ................................ 10
7.2.3 Replacement of the seat ring............................11
7.3 Tightening torques.................................................11
7.3.1 Tightening torques for nuts ..............................11
7.3.2 Tightening torques for seat rings .....................11
8.0 Troubleshooting ............................................11
9.0 Troubleshooting table ................................ 12
11.0 Warranty / Guarantee ................................. 13
12.0 EC declaration of conformity .................... 14
®
422 / 462
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Troubleshooting
Related Manuals for ARI Stevi 422 Series
Summary of Contents for ARI Stevi 422 Series
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Page 1: Table Of Contents
Operating and installation instructions ® Straight through control valves - STEVI 422 / 462 Series 422 Series 462 Contents 1.0 General information on operating 7.0 Care and maintenance........8 instructions ............. 2 7.1 Replacement of stem sealings ....... 8 7.1.1 Stuffing box packing design ....... 8 2.0 Notes on possible dangers...... -
Page 2: General Information On Operating Instructions
Operating and installation instructions ® Straight through control valves - STEVI 422 / 462 1.0 General information on operating instructions These operating instructions provide information on mounting and maintaining the fittings. Please contact the supplier or the manufacturer in case of problems which cannot be solved by reference to the operating instructions. -
Page 3: Description
Please contact the supplier or the manufacturer if you have any questions. 4.2 Operating principles ARI control valves are especially suitable for actuation by pneumatic or electrical actuators. Three plug types are available to suit the various applications: parabolic plug (standard pattern) -
Page 4: Diagram
Operating and installation instructions ® Straight through control valves - STEVI 422 / 462 4.3 Diagram Fig. 1: Series 422 Fig. 2: Series 462 4.3.1 Plug design (Pressure balanced plug refer to Fig. 11) Fig. 3: Perforated plug Page 4 Rev. -
Page 5: Technical Data
Operating and installation instructions ® Straight through control valves - STEVI 422 / 462 4.4 Technical data - Principal dimensions - Pressure-temperature-ratings, etc. refer to data sheet. 4.5 Marking Nominal diameter Manufacturer Type-Number CE-marking Nominal pressure Flow Notified body characteristic Kvs-value Plug Customer-specific... -
Page 6: Requirements At The Place Of Installation
Operating and installation instructions ® Straight through control valves - STEVI 422 / 462 5.2 Requirements at the place of installation The place of installation should be easily accessible and provide ample space for maintenance and removing the actuator. Stop valves should be installed before and after the control valve to enable maintenance working without draining the piping system. -
Page 7: Putting The Valve Into Operation
Operating and installation instructions ® Straight through control valves - STEVI 422 / 462 6.0 Putting the valve into operation ATTENTION ! - Before putting the valve into operation, check material, pressure, temperature and direction of flow. - Regional safety instructions must be adhered to. - Residues in piping and valves (dirt, weld beads, etc.) inevitably lead to leakage. -
Page 8: Care And Maintenance
Operating and installation instructions ® Straight through control valves - STEVI 422 / 462 7.0 Care and maintenance Maintenance and maintenance intervals have to be defined by the operator according to the service conditions. 7.1 Replacement of stem sealings 7.1.1 Stuffing box packing design The stuffing box packing (pos. -
Page 9: Bellows Seal Design
Operating and installation instructions ® Straight through control valves - STEVI 422 / 462 7.1.2 Bellows seal design If the stem leaks, the bellows seal is defective. The leak can initially be stopped by tightening the sleeve nut (pos. 25.16). Stem and bellows (pos. -
Page 10: Replacement Of Internal Parts
Operating and installation instructions ® Straight through control valves - STEVI 422 / 462 7.2 Replacement of internal parts 7.2.1 Replacement of plug and stem ATTENTION ! Refer to item 10.0 and 11.0 before dismantling the valve. - Remove actuator. (Refer to operating instructions for actuator!) Series 422 - Loose nuts (pos. -
Page 11: Replacement Of The Seat Ring
Operating and installation instructions ® Straight through control valves - STEVI 422 / 462 7.2.3 Replacement of the seat ring ATTENTION ! Refer to item 10.0 and 11.0 before dismantling the valve. - Remove actuator. (Refer to operating instructions for actuator!) - Loose nuts (pos. -
Page 12: Troubleshooting Table
Operating and installation instructions ® Straight through control valves - STEVI 422 / 462 9.0 Troubleshooting table ATTENTION ! - read item 10.0 and 11.0 prior to dismantling and repair work! - read item 6.0 before restarting the plant ! Fault Possible cause Corrective measures... -
Page 13: Dismantling The Valve Or The Top Part
Technology for the Future. GERMAN QUALITY VALVES ARI-Armaturen Albert Richter GmbH & Co. KG, D-33756 Schloß Holte-Stukenbrock Telephone (+49 5207) 994-0 Telefax (+49 5207) 994-158 or 159 Internet: http://www.ari-armaturen.com E-mail: info.vertrieb@ari-armaturen.com Rev. -
Page 14: Ec Declaration Of Conformity
Operating and installation instructions ® Straight through control valves - STEVI 422 / 462 12.0 EC declaration of conformity ARI-Armaturen Albert Richter GmbH & Co. KG, Mergelheide 56-60, D-33756 Schloß Holte-Stukenbrock EC declaration of conformity as defined by the Pressure Equipment Directive 97/23/EC... - Page 15 Operating and installation instructions ® Straight through control valves - STEVI 422 / 462 Page 15 Rev. 0040307000 0410...
- Page 16 Operating and installation instructions ® Straight through control valves - STEVI 422 / 462 Page 16 Rev. 0040307000 0410...
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