​​Description​​

The Metso​​A413659​​is a high-performance digital valve positioner,part of the Metso NDX series,designed for precise control of industrial process valves.It translates control signals from a process controller into accurate pneumatic output to position actuator valves,ensuring optimal flow,pressure,or level control in demanding applications across industries like oil&gas,power generation,and chemical processing.

​​Application Scenarios​​

In a natural gas processing plant,the Metso​​A413659​​positioner is installed on a critical control valve regulating gas flow into a cryogenic separator.It ensures the valve responds accurately to commands from the Distributed Control System(DCS),maintaining precise pressure levels.Its robust design withstands the plant’s vibration and temperature variations,while its integrated diagnostics alert maintenance teams to potential issues before they cause a shutdown,ensuring continuous,safe operation.

​​Parameter​​

Specification

Product Model

​​A413659​​

Manufacturer

Metso(Now part of Neles)

Product Category

Smart Valve Positioner

Input Signal

4-20 mA,HART®communication

Supply Pressure

1.4-7 bar(20-100 psi)

Output Pressure

Up to 6.9 bar(100 psi)

Air Consumption

<0.12 Nl/min(at steady state)

Accuracy

≤±0.5%of span

Repeatability

≤±0.1%of span

Enclosure Rating

IP66/NEMA 4X

Ambient Temperature

-40°C to+80°C(-40°F to+176°F)

Communication

HART 5/7,FOUNDATION Fieldbus,or PROFIBUS PA(model dependent)

Materials

Aluminum enclosure,stainless steel internals

Certifications

ATEX,IECEx,SIL 2/3

​​Technical Principles and Innovative Values​​

​​Innovation Point 1​​:The​​A413659​​utilizes a piezo-electric pilot valve technology for extremely low air consumption and highly responsive,precise valve actuation.This provides stable control and reduces the load on the plant air supply system.

​​Innovation Point 2​​:Integrated advanced diagnostics(via Valve Manager software)monitor valve performance,detecting issues like sticking,packing friction,or actuator pressure leaks,enabling predictive maintenance.

​​Innovation Point 3​​:Simple,push-button auto-calibration(Auto Tuning)quickly adapts the positioner to the specific valve’s characteristics,ensuring optimal performance and reducing commissioning time.

​​Application Cases and Industry Value​​

​​Case 1​​:A refinery installed Metso​​A413659​​positioners on its crude distillation unit’s control valves.The positioners’high accuracy improved product yield control by maintaining more precise temperature and flow rates.The diagnostic features predicted a valve stem seizure weeks in advance,allowing for planned maintenance that avoided an estimated 3-day unplanned shutdown,saving over$1.5 million.

​​Case 2​​:In a power plant’s boiler feedwater system,the​​A413659​​’s fast response and SIL 2 certification ensured safe and precise control of water flow,preventing dangerous boiler conditions.The reliability of the positioners contributed to a 20%reduction in control valve-related maintenance work orders.

​​Related Product Combination Solutions​​

​​Metso Neldisc™Butterfly Valves​​:For high-performance shut-off and control.

​​Metso Globe Valves​​:For severe service and precise control applications.

​​Metso Valve Manager Software​​:For configuration,diagnostics,and monitoring.

​​Neles®ND9000 Controller​​:For advanced process control applications.

​​Metso Smart Transmitters​​:For complementary pressure and temperature measurement.

​​Installation,Maintenance,and Full-Cycle Support​​

​​Installation​​:The​​A413659​​mounts directly to the valve actuator.Ensure clean,dry instrument air supply.Use the integrated mounting kit for alignment.Connection is straightforward via conduit entries for electrical signal and air lines.

​​Maintenance​​:Requires minimal maintenance.Periodic checks of the air supply filter are recommended.Utilize the built-in diagnostics for condition-based monitoring.Firmware updates can be performed via the HART communicator or fieldbus.

​​Support​​:We provide full lifecycle support,from selection and configuration to installation supervision and training.Our experts offer diagnostic services and repair support to maximize valve performance and availability.

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