Flanged Diaphragm Seal MT-S110FD

Description

1. Introduction to Flanged Diaphragm Seal MT-S110FD

The Flanged Diaphragm Seal MT-S110FD is a high-performance process interface device designed for pressure measurement in demanding industrial environments. This diaphragm seal serves as a protective barrier between the pressure instrument and the process medium, ensuring accurate transmission of pressure while preventing contact with corrosive, viscous, or high-temperature media. By isolating the pressure instrument, the diaphragm seal enhances system reliability, extends instrument service life, and ensures measurement stability in critical conditions.

The MT-S110FD is engineered to perform in high-pressure and high-vibration applications, where traditional pressure instruments may suffer from premature damage or measurement errors. It is particularly effective in separation systems and process isolation solutions, making it ideal for complex pipeline and reactor configurations in the chemical, petrochemical, and energy industries.

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2. Key Features of Flanged Diaphragm Seal MT-S110FD

The Flanged Diaphragm Seal MT-S110FD is designed to meet rigorous operational demands with the following performance features:

• “I” Section Type chamber construction for mechanical robustness

• “I” Section Type extension for reliable structural stability

• Suitable for flanges below ½” size configurations

• Optional exotic material selections available for highly corrosive environments

• Supports separation systems to isolate measuring instruments from the process

• Provides effective process isolation without affecting pressure transmission

• Excellent performance with highly viscous media where clogging is a concern

• Engineered for high-pressure applications

• Designed to withstand high-vibration pipeline and equipment conditions

These features make the MT-S110FD suitable for use across critical, sensitive, and severe industrial operating environments.

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3. Standard Parameters

These specifications ensure compatibility with a broad range of pressure instruments and pipeline flange standards in worldwide industrial systems.

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4. Design and Construction

The Flanged Diaphragm Seal MT-S110FD is built with full stainless-steel construction, ensuring durability, corrosion resistance, and mechanical strength.

Diaphragm

The AISI 316L stainless-steel diaphragm provides excellent resistance to chemical corrosion, making it suitable for aggressive process media. The flush-mounted diaphragm prevents trapped media and ensures stable pressure transmission even with sludge or high-viscosity fluids.

Chambers

Both top and bottom chambers are made of AISI 316 stainless steel, ensuring structural rigidity and high pressure tolerance.

Gasket

The use of PTFE (Teflon) gaskets ensures leak-proof sealing and high chemical resistance, making the seal suitable for acids, alkalis, and reactive chemical systems.

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5. Operating Principle

The Flanged Diaphragm Seal MT-S110FD works by separating the process fluid from the pressure instrument through a sealed liquid-filled chamber.

1. The process pressure applies force to the diaphragm.

2. The diaphragm deflects proportionally to the applied pressure.

3. The internal sealing fluid (typically silicone oil) transmits the pressure to the connected pressure gauge, switch, or transmitter.

4. The instrument receives and displays an accurate reading without direct media contact.

This ensures instrument protection, especially in harsh process conditions.

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6. Applications of MT-S110FD

The Flanged Diaphragm Seal MT-S110FD is widely used in industrial sectors where cleanability, pressure stability, corrosion resistance, and safe separation of instruments from process media are essential:

Chemical Processing Plants

Handles corrosive liquids, aggressive solvents, and chemical slurries.

Petrochemical & Refining

Used in:

• Distillation columns

• Reactor circulation loops

• Catalyst tanks

Oil & Gas Pipelines

Resists sour gas, heavy oil mixtures, sand-laden fluids, and wellhead pressures.

Power Generation Systems

Handles high-temperature steam and boiler feedwater systems.

Marine and Offshore Environments

Corrosion resistance ensures longevity in saltwater and chloride-rich atmospheres.

Pulp & Paper Industry

Ideal for handling thick pulp and fibrous suspensions.

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7. Performance in High-Pressure and High-Vibration Systems

The MT-S110FD is specifically engineered for:

• High static pressure (up to 400 bar)

• Mechanical vibration

• Shock loading

• Pressure pulsation

Its I-section structural design reinforces chamber strength, preventing measurement distortion and ensuring long-term accuracy.

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8. Media Compatibility

This diaphragm seal is suitable for:

• Viscous fluids

• Crystallizing fluids

• Aggressive and corrosive media

• Slurries and particulate-containing liquids

• Hydrocarbons

• Chemical intermediates

• High-temperature process fluids

Optional exotic alloys (e.g., Hastelloy, Monel, Duplex, Super Duplex) are available for extreme corrosion resistance.

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9. Installation and Integration

The Flanged Diaphragm Seal MT-S110FD integrates easily with:

• Pressure gauges

• Pressure switches

• Pressure transmitters

• Differential pressure instruments

It mounts directly to process flanges based on ANSI, EN, or JIS standards, ensuring installation flexibility across international facilities.

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10. Conclusion

The Flanged Diaphragm Seal MT-S110FD is a robust, versatile, and high-accuracy process isolation solution engineered for demanding industrial conditions. Designed to handle high pressure, corrosive and viscous media, and high-vibration environments, it ensures accurate pressure measurement while significantly extending instrument life. With stainless-steel construction, PTFE sealing, and global flange compatibility, this diaphragm seal delivers reliability, stability, and operational efficiency across the chemical, petrochemical, oil and gas, power generation, marine, and industrial processing sectors.