ARI-Armaturen STEVI 405 Globe-Type Control Valve with Pneumatic Actuator

The ARI-Armaturen STEVI 405 is a robust and versatile globe-type control valve designed for precise flow regulation in industrial process systems. Engineered in Germany, it is equipped with a pneumatic actuator (tag: WB-XV-590) for reliable control in both modulating and ON/OFF applications. This valve features a soft NBR seal, offering excellent compatibility with water, light oils, air, and industrial fluids, and ensures Class VI tight shutoff.

Constructed from EN-GJL-250 (cast iron) or EN-GJS-400-15 (ductile iron), the valve body is paired with internal trim components in stainless steel or bronze/brass alloy, depending on fluid compatibility. The valve supports linear or equal percentage flow characteristics and includes flanged ends in accordance with EN 1092-2 for easy integration into PN16 piping systems.

With a design pressure of 16 bar and service temperatures up to 100°C, this valve is ideal for HVAC, steam, and general utility service. The actuator supports standard pneumatic signals (3–15 psi) or can be configured with an electro-pneumatic positioner. Optional features include limit switches, solenoid valves (NAMUR interface), and fail-safe (open or close) spring-return configurations.

Specifications:

– Manufacturer: ARI-Armaturen GmbH & Co. KG (Germany)
– Model: STEVI 405
– Valve Type: Globe Control Valve – Modulating
– Actuator Tag: WB-XV-590
– Actuation Type: Pneumatic – Single or Double Acting
– Control Signal: 3–15 psi (0.2–1.0 bar) or electro-pneumatic
– Pressure Rating: PN16 (16 bar / 232 psi)
– Temperature Rating: Max 100°C
– Seal Material: NBR (Nitrile Butadiene Rubber)
– Leakage Class: Class VI (soft seat) or Class IV (metal seat) – per ANSI/FCI 70-2
– Flow Characteristic: Linear or Equal Percentage (trim-dependent)
– Media Compatibility: Steam, water, air, oils, industrial fluids
– Valve Body Materials: EN-GJL-250 (cast iron) or EN-GJS-400-15 (ductile iron)
– Internal Trim Materials: Stainless steel, bronze, or brass alloy (application dependent)
– End Connections: Flanged per EN 1092-2 – PN16
– Mounting Standard: ISO 5211 compatible
– Mounting Orientation: Horizontal or vertical (actuator upright preferred)
– Flow Direction: Indicated by arrow on valve body
– Fail-Safe Position: Fail-open or fail-close (spring return actuator)
– Position Feedback: Optional – Limit switch or position transmitter
– Solenoid Interface: NAMUR standard compliant
– Design Temperature Range: 0°C to +100°C
– Piping System Compatibility: DIN/EN flanged PN16

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