Danfoss EV250B solenoid valve, Flowserve Logix 520MD smart valve positioner

Product Description:

Flowserve valve positioners are sophisticated electro-pneumatic devices designed to ensure precise positioning of the final control element, which is typically a valve. These intelligent devices play a crucial role in responding to commands from a process controller and translating them into actions that result in the valve reaching the desired position.

By converting a standard input signal, such as 4-20 mA, into an accurate pneumatic output pressure, the valve positioner effectively activates the valve. This process enables the valve to overcome challenges such as stem friction and dynamic forces, thereby enhancing control accuracy and performance.

Features:

High Accuracy & Repeatability: Ensures precise valve positioning (< ±0.5%) for improved process control.

Advanced Digital Communication: Supports HART, Foundation Fieldbus, and Profibus-PA protocols for seamless integration into digital control systems.

Robust Construction: Features rugged housing (e.g., NEMA 4X / IP66) and corrosion-resistant materials for harsh environments.

Intuitive Diagnostics: Built-in monitoring of travel, pressure, and supply air provides predictive maintenance data and reduces downtime.

One-Button Auto-Calibration: Simplifies setup and commissioning, reducing human error and time.

Selectable Valve Characterization: Allows for in-field selection of flow characteristics (Linear, Equal %, Quick Open).

Hazardous Area Certified: Approved for use in explosive atmospheres (ATEX, IECEx, FM).

Low Air Consumption: Optimizes plant energy usage.

Technical Parameters:

Input Signal: 4-20 mA, HART; Digital (Foundation Fieldbus, Profibus-PA)

Supply Pressure: 1.4 - 7 bar (20 - 100 psi)

Output Pressure: 0 - 100% of supply pressure

Accuracy: < ±0.5% of span

Enclosure Rating: IP66/67, NEMA 4X

Ambient Temp. Range: -40°C to +80°C (-40°F to +176°F)

Mounting: Direct to ISO 5211, NAMUR standard

Certifications: ATEX, IECEx, FM, SIL 2/3 (model dependent)

Applications:

Flowserve positioners find applications in a diverse range of challenging industries, such as:

• Oil & Gas: Including production platforms, refineries, and pipelines.
• Chemical Processing: For reactor feed control and batch processes.
• Power Generation: Utilized in applications such as boiler feedwater control, turbine bypass, and fuel management.
• Water & Wastewater: Used for flow control and chemical dosing purposes.
• Pharmaceuticals: Employed in precise batch processing and clean-in-place (CIP) operations.
• Pulp & Paper: Supporting functions like chemical recovery and stock preparation.

Support and Services:

Our Product Technical Support and Services for Valve Accessories include:

- Expert troubleshooting assistance for any issues related to valve accessories.

- Comprehensive product training and guidance to ensure optimal performance.

- Installation support to help you set up your valve accessories correctly.

- Regular maintenance services to keep your valve accessories in top condition.

- Access to a dedicated support team for any questions or concerns you may have.

Packing and Shipping:

Product Packaging: The Valve Accessories are carefully packaged in a sturdy cardboard box to ensure safe delivery. Each accessory is wrapped in bubble wrap to prevent any damage during transportation.

Shipping: We ship our Valve Accessories worldwide using trusted courier services. Orders are processed promptly and usually dispatched within 1-2 business days. Customers can track their shipment using the provided tracking number to monitor the delivery status.