Description
METSO A413160
Technical Specifications
- Supply pressure range: 1.4 bar to 8.0 bar
- Air delivery capacity: Up to 18 Nm³/h at 6 bar supply pressure
- Operating medium: Filtered, dry, non-lubricated instrument air or sweet natural gas
- Operating temperature: -40°C to +85°C
- Storage temperature: -40°C to +90°C
- Relative humidity: 5% to 95%, non-condensing
- Mounting: Internal installation inside ND9200 positioner pneumatic compartment
- Diagnostic functions: Supply pressure monitoring, spool sticking detection, exhaust blockage alarm
Functional Features
- High flow spool valve design for large volume pneumatic actuators to reduce valve stroke time.
- Convert low-power electronic pilot signal into large air volume output for fast valve movement.
- Low steady state bleed air consumption to save instrument air during stable valve state.
- Built-in high capacity inlet filter to prevent particle contamination of precision spool.
- Linear flow characteristic minimizes hysteresis during modulating control.
- Compatible with large B-series double acting and spring return actuators.
- Integrated pressure balancing structure to resist instrument supply pressure fluctuation.
- Support fast emergency shutdown action for safety related control valves.
Application Scenarios Large diameter control valve with big piston actuator, refinery emergency shutdown valve, power plant large steam control valve, pulp mill large digester control valve, chemical plant large pipeline modulating valve.
Performance Parameters
- Response time: Less than 60ms for command change
- Hysteresis: Less than 0.4% full stroke
- Maximum supply pressure: 8.0 bar
- Minimum supply pressure: 1.4 bar
- Internal filtration precision: 40 micron
Material Composition
- Valve body: Hard anodized aluminium alloy
- Spool and valve seat: High precision stainless steel
- Sealing elements: Fluorosilicone elastomer
- Inlet filter: Stainless steel fine mesh
- Mounting bracket: Aluminium alloy
- Sealing gasket: Fluorosilicone elastomer
Structural Characteristics High capacity integrated pneumatic spool relay assembly with enlarged internal air passage. Inlet port fitted with stainless steel filter. Precision stainless steel spool slides inside anodized aluminium valve body. Fluorosilicone seals separate supply port, actuator output port and exhaust port. The assembly is fixed inside ND9200 positioner pneumatic chamber.
Working Principle Filtered instrument air flows into A413160 inlet port. Electronic pilot signal from positioner main board shifts internal spool. Spool opens supply air path to actuator chamber to increase valve opening, or opens exhaust path to release air from actuator chamber to reduce valve opening. Enlarged internal air passage delivers large air volume to actuate large valve quickly. When valve travel reaches target setpoint, spool returns to balanced position and stops air flow.
Installation Requirements
- Isolate instrument air supply and vent residual air from positioner before disassembly.
- Open ND9200 positioner pneumatic compartment cover, remove old relay assembly.
- Mount A413160 to internal base, align air ports and install sealing gasket.
- Tighten mounting screws evenly with specified torque.
- Reconnect instrument air supply and perform leak test at all ports.
- Execute positioner auto-calibration and full stroke speed test after installation.
Usage Precautions
- Maintain instrument air quality strictly. Oil, water or solid particles cause spool sticking and slow response.
- Clean inlet filter periodically according to plant maintenance schedule.
- Do not disassemble internal spool assembly on site. Internal precision components require factory calibration.
- Check air leakage at gasket and port joints after replacement.
- Replace whole assembly when abnormal stroke speed or internal leakage appears.
- Confirm compatibility with ND9200 high flow positioner only. It cannot replace A413152 directly in ND9100.
