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PEEK valve for HPLC
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PEEK valve for HPLC

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PEEK valve for HPLC, PEEK valve for High Performance Liquid Chromatography,  Burr-free, High surface finish, Excellent flatness, High precision

PEEK Analytical Instrument Valve Head – Product Specifications

  • Burr-free internal bore machining for smooth fluid flow

  • High surface finish ensures stable flow rate and pressure

  • No burrs or particulates, minimizing contamination risks

  • Precision bore diameter: 0.5mm ±0.05mm

  • Surface roughness: Ra ≤0.1μm

  • Flatness tolerance: 0.004mm

Material Options for Optimization

  • Reinforced Grade: PEEK 450GL30 (30% glass fiber) for high-load applications

  • Conductive Grade: Carbon fiber-filled for anti-static performance (reduces particle adhesion)

  • Ultra-Pure Grade: Metal content <1ppm, ideal for trace analysis instruments

By replacing stainless steel or ceramic components, PEEK significantly improves instrument reliability while reducing maintenance costs.



Application of PEEK in Analytical Instrument Pump Valves and Valve Heads

1. Chemical Resistance

PEEK (Polyether Ether Ketone) exhibits excellent resistance to strong acids, alkalis, and organic solvents, making it ideal for pump valves and valve heads in HPLC (High-Performance Liquid Chromatography), IC (Ion Chromatography), and other analytical instruments. Unlike metal components, PEEK prevents contamination or failure due to chemical corrosion.

2. Mechanical Strength & Wear Resistance

  • High mechanical strength and rigidity ensure durability under frequent actuation, extending valve head service life.

  • Low friction coefficient (can be enhanced with carbon fiber or graphite additives) reduces wear, making it suitable for high-frequency metering and switching valves.

3. High Purity & Low Leachables

  • Complies with USP Class VI and FDA standards, ensuring no metal ion or organic contamination—critical for pharmaceutical and food safety testing.

  • Smooth surface minimizes sample adsorption, reducing cross-contamination risks.

4. High-Temperature Stability & Dimensional Integrity

  • Continuous service temperature up to 260°C (short-term 300°C), suitable for high-temperature chromatography systems.

  • Maintains dimensional stability under pressure/temperature fluctuations, ensuring reliable sealing.



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Our current product series including PEEK, PEI, PSU and PPS profiles of sheets, rods, tubes, with a large inventory of standard sizes available. And customization of shape & color & material filled can also supply.

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