Description
1. Introduction to Flanged Diaphragm Seal MT-S130FD
The Flanged Diaphragm Seal MT-S130FD is a high-performance pressure interface device engineered to isolate measurement instruments from harsh, corrosive, viscous, or high-temperature process media. This model is particularly suitable for demanding industrial applications where high pressure, high vibration, and slurry flow conditions are present. By transmitting pressure through a sealed system filled with silicon fluid, the diaphragm seal prevents direct contact between the process medium and the pressure-sensing instrument, ensuring long operational life and measurement reliability.
The MT-S130FD comes equipped with an extended neck type design, allowing it to handle high-temperature process lines by physically distancing the diaphragm from the instrument. This design approach enhances thermal protection and increases measurement accuracy even under continuous high-temperature exposure.
2. Key Design Features
Extended Neck Design
The extended neck structure of the Flanged Diaphragm Seal MT-S130FD provides improved dissipation of heat, protecting gauges and transmitters mounted directly on industrial pipelines or vessels that operate under elevated temperature conditions. The neck extension typically ranges from 50 mm to 200 mm, depending on configuration and process requirements.
Laser-Welded Diaphragm for Precision
The diaphragm is laser-welded, ensuring an even, seamless, and highly durable surface. This eliminates the risk of leakage, ensures long-term stability, and maintains measurement repeatability in dynamic process environments.
Suitable for High-Pressure and High-Vibration Applications
This model is specifically developed for high-pressure operating ranges, up to 250 bar, and is suitable for high-vibration systems, common in compressors, pumps, power generation units, and refinery pipelines.
Compatibility with Exotic Materials
For corrosive or chemically aggressive fluids, the Flanged Diaphragm Seal MT-S130FD can be manufactured using exotic alloys such as Hastelloy, Monel, Inconel, Duplex, and Titanium. These provide extended resistance to chlorides, acids, and abrasives.
Reliable Separation and Isolation
The design ensures complete isolation of the pressure instrument from the medium by using a sealed separation chamber filled with silicon fluid. This helps maintain accurate pressure transmission without contamination or internal corrosion.
3. Application Range and Industrial Benefits
The Flanged Diaphragm Seal MT-S130FD is widely used across industries where direct pressure measurement is not feasible due to severe operating conditions. Typical applications include:
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Viscous and Paste Media such as latex, glues, syrups, resins, and polymer solutions.
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Slurry and Sediment Applications found in mining, pulp & paper, wastewater clarification, or ceramic processing.
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Corrosive Acids and Chemicals such as HCl, H₂SO₄, NaOH, and seawater-derived fluids.
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High-Temperature and High-Pressure Pipelines in oil & gas, petrochemical, and refinery production lines.
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High-Vibration Environments such as rotating machinery systems, compressors, and steam generation equipment.
Because the diaphragm isolates the instrument, the life of pressure transmitters and gauges is significantly extended, reducing replacement and maintenance costs over time.
4. Standard Technical Parameters (PARAMETERS STANDARD)
| Parameter | Specification |
|---|---|
| Pressure Range Type | -1…0 bar to 0…250 bar |
| Flange / Chamber Material | AISI SS 316 |
| Diaphragm Material | AISI SS 316 |
| Instrument Connection | ½” NPT (F) |
| Process Connection (Flange) | ANSI 16.5B Standard |
| Flange Facing Type | Raised Face (RF) |
| Sealing Fluid | Silicon Oil |
| Neck Extension | 50 mm to 200 mm |
| Assembly Method | Direct Assembly |
5. Performance Advantages
Resistance to Corrosion and Abrasion
The standard AISI SS 316 material provides excellent baseline corrosion resistance. With optional exotic alloys, the system can withstand extreme pH levels, abrasive sedimentation, and oxidizing chemical environments.
Stable Operation in Harsh Dynamics
High mechanical vibrations typically degrade pressure instrument stability. The Flanged Diaphragm Seal MT-S130FD is engineered to maintain structural integrity and minimize signal disturbances over long duty cycles.
Improved Safety and Contamination Prevention
This diaphragm seal prevents the process medium from reaching the measurement device, reducing the risk of contamination, instrument rupture, or hazardous leaks in pressurized pipelines.
Operational Flexibility with Optional Capillary Tube
Where direct mounting is not possible due to accessibility or thermal constraints, an optional capillary line can be installed to remotely mount the pressure instrument at a safe and convenient location.
6. Typical Installation Scenarios
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Refinery High-Pressure Reactors – Handling hydrocarbons at high temperature and high flow velocity.
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Chemical Dosing Lines – Precise pressure measurement without risk of chemical attack.
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Slurry and Mud Pipelines – Preventing clogging and membrane damage while maintaining signal accuracy.
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Boiler and Heat Exchanger Systems – Managing high temperatures with neck extension cooling benefit.
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Desalination and Marine Applications – Protection against chloride-heavy corrosive environments.
7. Conclusion
The Flanged Diaphragm Seal MT-S130FD is a robust, reliable, and process-optimized solution for pressure measurement in extreme industrial conditions. With its extended neck design, laser-welded diaphragm, optional exotic materials, and compatibility with high-pressure and high-vibration environments, it ensures measurement accuracy while safeguarding the pressure instrument from damage and contamination.
This model supports long-term operational stability, reduces maintenance downtime, and adapts easily to a variety of industrial sectors, making it a dependable choice for engineers and system designers requiring durable and high-performance sealing solutions.
