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ARI-STEVI® VARIO CONTROL VALVES STRAIGHTWAY FORM

ARI-STEVI®Vario - compact design fig. 448/449
low weight, compact design, shaft plug guide and bonnet with rotatable traverse.

Control valves from ARI-Armaturen can be delivered if different executions and for a lot different processes & applications. The valves are made with individual solutions and prepared for the specific processes & applications. The valves can be fitted with different types of actuators, seats and plugs in different materials and shapes depending on application.

Contact us for more information about these variants.

Properties
  • Straightway form
  • Flanged connections acc to DIN (welded and threaded connections on request)
  • Linear or equal percentage regulating characteristics (50:1)
  • Seat and plug in different types and materials
  • Operation: Manual, pneumatic or electric actuators
  • Optional equipment: Bellow 449, positioner, limit switches, emergency hand wheel etc.
Applications
  • For control of steam, hot water, water, heat transfer oil, cooling water, gases and other liquids
  • For industry, offshore, ship building, heating/cooling systems and ventilation
Technical data
  • Sizes: DN15-100 (Kvs: 1 – 100)
  • Pressure classes: PN16-40, ref. size vs p/t diagram
  • For media/process temperatures from -10°C (-60°C) to +400°C
  • Face to face acc. to DIN EN 558 series FTF-1
  • Leakage rate IV acc. to DIN EN 60534-4
  • Body material: Cast iron EN-JL1040, nodular iron EN-JS1049, carbon steel 1.0619+N, stainless steel 1.4408
  • Plug (1.4021+QT), parabolic (standard), perforated, parabolic PTFE soft seal
  • Pressure balanced plug, stellited (option) and other special solutions on request
  • Seat (1.4021+QT), screwed into the body. Stellited (option)
  • Stem sealing PTFE V-ring, EPDM or stainless steel bellow
Technical documentation
  • PED 2014/68/EU
  • ATEX 2014/34/EU
  • Certificates EN 10204-3.1, TA-Luft, DVGW Gas on request

Special valves like fig. 405/460 automatic (with pneumatic/electric actuator) on/off valve, ARI-STEVI®BBD fig. 415 automatic blow down valve for boilers, ARI-STEVI fig. 453 control valve for feed water applications.