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ARI-STEVI® SMART CONTROL VALVES STRAIGHTWAY FORM

ARI-STEVI®Smart - standard type fig. 440/441 and 425/426 standard control valve for non-critical applications.

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 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 (acc to DIN and ANSI), welded (socket weld) and threaded (socket BSP/NPT) connections
  • Linear or equal percentage regulating characteristics (50:1 / 30:1)
  • Seat and plug in different types and materials
  • Operation: Manual, pneumatic or electricals actuators
  • Optional equipment: Bellow (fig 441/426), positioner, limit switches, emergency hand wheel and fail safe for electric actuator
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: DN15-500 / ANSI 1/2"- 8" (Kvs: 2,5 – 4000)
  • Pressure classes: PN16-40 / ANSI class 150-300, ref. size vs p/t diagram
  • For media/process temperatures from -10°C to +450°C
  • Face to face acc. to DIN EN 558 series FTF-1
  • Leakage rate IV acc. to DIN EN 60534-4 (option IV-S1)
  • Body material: Cast iron EN-JL1040, nodular iron EN-JS1049, carbon steel 1.0619+N, stainless steel 1.4408
  • Plug (1.4021+QT, option 1.4571), parabolic (standard), V-port, perforated, parabolic-PTFE soft seal or pressure balanced plug
  • Seat (1.4021+QT option 1.4571) ring is rolled into the body, stellited (option)
  • Stem sealing PTFE V-ring, PTFE, EPDM, graphite and stainless steel bellow
Technical documentation
  • PED 2014/68/EU
  • ATEX 2014/34/EU on request
  • Certificate EN 10204-3.1, TA-Luft, DVGW Gas on request

Special valves like fig. 405/460 automatic (with pneumatic/electrical 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.