The ARI-STEVI offers numerous benefits over other control valves including long life stem seals proven millions of times over, flexible changeable trims offering multiple Kvs values per body size, precise and durable operation (even at high differential pressures) thanks to the vibration reducing shaft guiding, easy handling, the small footprint, rotatable upper part and reduced weight when compared with other control valves.

Suitable for non-critical complex control tasks uses in applications such as industrial complexes, plant construction and process technology installations for mediums such as cooling water, cooling brine, warm water, hot water and steam. Stainless Steel construction means that even mildly aggressive applications are suitable.

Offered as standard in the with Nodular Iron Body, .448 Stainless Steel (1.4021+QT) Trim and the Spring-Loaded PTFE V-Ring unit complete with the Spring Return (Fail Close) Pneumatic Actuator and the Valves Online Digital Electro-Pneumatic Positioner unit.

Options available upon request include: different body and trim materials, parabolic plugs with PTFE seats, miniature Kvs values, increased tightness on seats i.e. Class IV leakage rate.

If you are not sure of the size, you require for your process please do not hesitate to get in contact with our Technical Sales team who will be able to size the correct valve for your process.

Key Features:

• PN40 Flanged Connection (Flanged PN16 on DN65 and DN100 Versions)
• Nodular Iron Body & Stainless Steel 1.4021+QT Trim
• Spring Loaded PTFE V-Ring Unit
• Spring Close Pneumatic Actuator
• Up to -10 to +220°C Temperature Rated
• DN15 to DN100, Kvs from 1 to 100
• 50:1 Rangeability
• Digital Electro-Pneumatic Valve Positioner (0-10V, 0-5V, 0-20mA or 4-20mA input)

Datasheet:

 ARI-STEVI Vario Pneumatic Globe Control Valve - Nodular Iron Datasheet

 ARI-STEVI Positioner Datasheet

 ARI-DP Pneumatic Actuator Datasheet

 ARI 448 Datasheet