Achieve precise, laminar fluid control with CMI Sintered Metal Flow Restrictors. Clog-resistant multi-path design in 316L SS, Hastelloy & Titanium. Learn more.

Sintered Metal Flow Restrictor

High-precision sintered metal flow restrictors engineered for stable gas and liquid flow regulation. Replaces traditional capillaries with a multi-path porous matrix to ensure clog resistance, smooth laminar flow, and linear pressure-flow scalability in analytical, medical, and industrial systems.

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Precision Sintered Metal Flow Restrictors for Stable Laminar Flow Control

CMI Sintered Metal Flow Restrictors utilize an engineered porous metal matrix to provide highly accurate, repeatable, and stable flow regulation for gases and liquids.

Unlike conventional capillary tubes or single-orifice restrictors, CMI porous restrictors generate smooth laminar flow through thousands of interconnected micro-channels, ensuring stable pressure-flow performance with excellent clog resistance.

The porous structure enables highly precise flow adjustment while maintaining superior thermal stability, corrosion resistance, and long-term calibration reliability under demanding operating conditions.

CMI flow restrictors are widely used in analytical instrumentation, chromatography systems, medical devices, gas mixing systems, calibrated leak devices, and precision OEM fluid control applications.

Core Technical Principles

Laminar Flow Generation

Fluid passing through interconnected micro-channels is naturally straightened and stabilized, converting turbulent input into smooth and predictable laminar flow.

Precise Flow Regulation

Flow rate is controlled through engineered porosity, pore size, and element thickness, allowing extremely accurate micro-flow adjustment.

Linear Pressure-Flow Relationship

Within the laminar flow regime, flow rate scales linearly with differential pressure, simplifying calibration and process automation.

Multi-Path Clog Resistance

Thousands of parallel micro-flow paths maintain stable flow even if partial pore blockage occurs, significantly improving operational reliability.

Application Examples & Solutions

Medical Drug Delivery

Used in infusion pumps, wearable drug delivery devices, and micro-fluidic dosing systems for ultra-low and highly stable liquid dosing.

Beverage Gas Mixing

Controls precise CO₂ or N₂ injection for carbonation systems, nitrogen draft beer, and beverage processing applications.

Anesthesia & Respiratory Systems

Provides accurate anesthetic gas mixing and pressure regulation in medical respiratory gas delivery systems.

Gas Chromatography

Delivers pulse-free carrier gas flow for chromatography systems, split/splitless injectors, and detector gas control.

Laminar Flow Elements

Used for mass flow meter calibration, gas sampling bypass systems, and differential pressure flow diagnostics.

Calibrated Leak Devices

Functions as a precision reference leak element for vacuum system testing, helium leak detector calibration, and environmental monitoring.

Technical Advantages

✔ Tailored porosity and micron ratings from 0.1 μm to 100 μm
✔ Stable laminar flow performance with linear pressure-flow behavior
✔ Excellent clog resistance compared to single-orifice restrictors
✔ Superior thermal and chemical stability
✔ High mechanical integrity under vibration and pressure shock
✔ Long-term calibration stability and repeatability
✔ Available in stainless steel, titanium, Hastelloy, Inconel, and specialty alloys
✔ Flexible OEM integration into custom housings and assemblies

OEM Integration & Custom Configurations

CMI flow restrictors can be manufactured as press-fit discs, threaded inserts, cylindrical restrictors, compression fitting assemblies, or integrated directly into custom housings and flow control modules.

Customized pore structures, alloy materials, dimensions, pressure characteristics, and flow calibration values are available according to specific application requirements.

Looking for Precision Flow Restrictor Solutions?

CMI provides customized porous metal flow restrictors engineered for analytical instrumentation, medical devices, gas control systems, and OEM fluid regulation applications.

📩 Technical Support: sales@cmifiltration.com

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Technology

At CMI, technology is more than just a manufacturing process; it is the science of precision separation. Our multidisciplinary approach combines advanced metallurgy, fluid dynamics, and rigorous quality validation to solve the world’s most challenging filtration tasks in the hydrogen, power, and high-purity water sectors.

Lab Testing & Quality Validation

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Filtration Fundamentals

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Porous Media Technology

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Regeneration & Maintenance Protocols

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Separation & Coalescing Science

Advanced solutions for gas-liquid and liquid-liquid separation. Our coalescing technology utilizes deep-bed micro-fiber and sintered media to remove sub-micron droplets…

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Vessel & System Engineering

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Our fabrication experts are ready to help you with custom-made filter housing and fabricated metal filter vessel solutions. Contact us with your specific requirements for a customized quote.

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Comprehensive filtration solutions from design to maintenance and support

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CMI provides filtration testing and validation support to ensure filtration performance, optimize system design, and reduce operational risks.

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CMI provides after-sales support and spare parts supply for filtration systems, ensuring reliable operation, reduced downtime, and long-term system performance.

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Custom engineering and OEM fabrication services for industrial filtration equipment, including filter housings, pressure vessels, and non-standard filtration systems.