Description
1. Introduction to Extended Needle Valve MT-M120NV
The Extended Needle Valve MT-M120NV is a precision-engineered valve designed for accurate flow control and reliable isolation in industrial processes. It is widely used in applications requiring fine adjustment of fluid flow, including impulse lines, pressure instruments, and systems where high-pressure safety is critical.
This valve is particularly suitable for industries such as petrochemical, chemical processing, power plants, and instrumentation systems, where precise control and durability are essential. Its design ensures both safety and operational efficiency while maintaining low maintenance requirements.
2. Key Features
The MT-M120NV offers a range of features that make it a reliable and versatile solution for fluid control:
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Extended needle design for precise flow regulation.
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Pins locking bonnet ensures secure operation and prevents accidental adjustment.
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Safety back seating for pressure isolation during maintenance.
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Cv coefficient of 0.23 for consistent and predictable flow.
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Suitable for impulse lines and off-shutting applications.
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Designed for mounting flush on rings and flanges.
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Compatible with both process and instrument connections.
These features make it ideal for applications that require precise flow measurement, control, and isolation in challenging industrial environments.
3. Applications
The MT-M120NV is used in various industrial applications, including:
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Isolation of pressure instruments and control devices.
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Fine adjustment of flow in impulse and measurement lines.
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High-pressure systems requiring secure shutoff capabilities.
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Processes in chemical, petrochemical, and power plants.
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Systems where flush-mounted connections on flanges or rings are required.
Its reliability and precision make it a preferred choice for operators who need both safety and performance in high-pressure environments.
4. Working Principle
The needle valve operates using a tapered needle and matching seat:
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When the valve is rotated, the needle moves in and out of the seat, controlling the flow passage area.
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This allows for precise regulation of fluid flow even in small diameters or high-pressure lines.
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The back-seating feature provides a tight seal, preventing leakage during maintenance or removal.
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The locking pins on the bonnet secure the needle position, ensuring consistent performance and safety.
This design ensures accurate flow control, durability, and ease of maintenance, even in demanding process conditions.
5. Technical Specifications
| Parameter | Specification |
|---|---|
| Maximum Pressure | 413 bar (6000 psi) |
| Maximum Temperature | 240°C |
| Connection Type (Process) | NPT ½″ |
| Connection Type (Instrument) | NPT ½″ |
| Body Material | L316 AISI |
| Bonnet Material | L316 AISI |
| Spindle Gasket | PTFE Virgin |
| Cv Coefficient | 0.23 |
6. Advantages
The Extended Needle Valve MT-M120NV offers several advantages:
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High-precision flow control for accurate measurement and regulation.
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Safe operation in high-pressure systems due to back-seating and locking bonnet.
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Versatile installation with both process and instrument connection compatibility.
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Low-maintenance design with durable materials for long operational life.
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Suitable for flush-mounted applications, ensuring compact and neat integration into piping systems.
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Ideal for both continuous and intermittent flow adjustments in critical applications.
These advantages make the MT-M120NV an essential component for precision control in complex industrial processes.
7. Installation Guidelines
Proper installation ensures reliable performance:
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Ensure the flow direction follows the markings on the valve.
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Use compatible gaskets and fittings to maintain seal integrity.
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Provide easy access for maintenance, particularly when used in high-pressure systems.
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Tighten locking pins on the bonnet after adjustment to prevent accidental movement.
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Verify system pressure and temperature compatibility with the valve specifications.
Following these guidelines guarantees safe and precise operation over the valve’s service life.
8. Maintenance Recommendations
Regular maintenance helps extend the service life of the MT-M120NV:
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Inspect the needle and seat for wear or corrosion periodically.
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Clean the valve components if any buildup of particles or deposits is detected.
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Check the PTFE spindle gasket for signs of degradation or leakage.
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Lubricate moving parts as recommended by the manufacturer.
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Replace any worn components promptly to maintain high precision and safety standards.
Routine maintenance ensures consistent performance, reduces downtime, and maximizes reliability in critical applications.
9. Conclusion
The Extended Needle Valve MT-M120NV is a high-precision, durable solution for flow regulation and instrument isolation in demanding industrial environments. Its extended needle design, locking bonnet, and back-seating features provide safe, accurate, and reliable operation.
With a Cv coefficient of 0.23, compatibility with high pressures and temperatures, and robust materials like L316 AISI and PTFE, this valve is ideal for impulse lines, pressure instruments, and flush-mounted applications. Its combination of precision, safety, and longevity makes it an essential component for process control in industries including chemical, petrochemical, power, and instrumentation systems.
