ARI-STEVI® PRO CONTROL VALVES STRAIGHTWAY FORM

ARI-STEVI®Pro – high performance control valve for critical applications, fig. 470/471, fig. 422/462 (bellow seal as option).
Guided plug and stem, stem is blow-out protected.

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.

Details Technical documentation

Properties	Straightway form Flanged connections (acc to DIN and ANSI) og welded connections (butt weld) Linear or equal percentage regulating characteristics (50:1 / 30:1) Seat and plug in different types and materials Operation: Manual, pneumatic or electric actuators Optional equipment: Bellow (fig 471/462), positioner, limit switches, emergency hand wheel and fail safe for electric actuator etc.
Applications	For control of steam, hot water, water, heat transfer oil, cooling water, gases and other liquids For industry, offshore and power plants
Technical data	Sizes: DN15-250 / ANSI 1"-8" (Kvs: 1 – 250) Pressure classes: PN16-40 / ANSI class 150-300, ref. size vs p/t diagram For media / process temperatures from -10°C (-60°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: Cast iron EN-JL1040, nodular iron EN-JS1049, carbon steel 1.0619+N, stainless steel 1.4581 and other special alloys (1.7379) Plug (1.4021+QT, option 1.4571), parabolic (standard), V-port, perforated, parabolic PTFE soft seal Pressure balanced plug, stellited (option) and other special solutions Seat (1.4021+QT, option 1.4571), screwed seat ring. Stellited as option Stem sealings in PTFE V-ring, PTFE, EPDM, graphite and stainless steel bellow
Technical documentation	PED 2014/68/EU ATEX 2014/34/EU 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.