AIGIS Multi-Position Multi-Port Selection Valves for Protein Purification Systems

Overview

The AIGIS Multi-Position Multi-Port Selection Valve Series is a precision-engineered family of fluidic switching valves specifically developed for high-integrity protein purification workflows in preparative and analytical liquid chromatography systems. These valves operate on the principle of rotary or linear actuation to enable deterministic routing of mobile phase, sample, eluent, and fractions across multiple chromatographic columns, detectors, and collection vessels—without manual intervention or flow interruption. Each valve variant is constructed with chemically inert, low-binding materials (PEEK and electropolished SUS316L) to minimize protein adsorption, metal leaching, and carryover—critical requirements for biopharmaceutical process development, monoclonal antibody (mAb) purification, and recombinant protein isolation. The series supports seamless integration into automated purification platforms compliant with ISO 9001 manufacturing standards and aligned with FDA 21 CFR Part 11 data integrity expectations when paired with validated control software.

Key Features

• Modular architecture supporting interchangeable rotor seals and stator plates for rapid reconfiguration between port counts (4–14 ports) and position counts (1–6 positions)
• Pressure-rated up to 4.0 MPa (580 psi), enabling compatibility with both low-pressure gravity-fed and medium-pressure FPLC/HPLC-compatible purification systems
• Multiple bore size options (0.75–4.0 mm ID) optimized for laminar flow control across wide dynamic ranges—from micro-scale analytical injections (≤100 µL) to preparative loading volumes (>200 mL)
• Dual-material wetted path design: PEEK for chemical resistance and low protein binding; SUS316L for high-pressure zones requiring mechanical robustness and trace-metal-free performance
• Low-dead-volume construction (<5 µL internal volume per port transition) to preserve sample integrity and reduce dilution during valve switching
• Repeatable positioning accuracy (<±0.1° angular tolerance) ensured by precision-machined ceramic or sapphire rotor bearings and integrated optical encoder feedback

Sample Compatibility & Compliance

These valves are validated for use with aqueous buffers (pH 2–12), chaotropic agents (e.g., guanidine HCl), organic modifiers (acetonitrile, isopropanol), and sanitizing solutions (0.5 M NaOH, 20% ethanol). All PEEK components meet USP Class VI biocompatibility standards; SUS316L surfaces conform to ASTM F899 and EN 10204 3.1 material certification requirements. The valve series is routinely deployed in GMP-aligned purification suites where traceability, cleaning validation, and change control are enforced per ICH Q5D and Q5E guidelines. Optional documentation packages include Factory Acceptance Test (FAT) reports, material traceability dossiers, and sterilization cycle compatibility summaries (e.g., steam-in-place or CIP/SIP protocols).

Software & Data Management

Valve operation is controlled via TTL, RS-485, or CAN bus interfaces compatible with major chromatography data systems (CDS), including Waters Empower, Thermo Chromeleon, and Shimadzu LabSolutions. Firmware supports programmable dwell times (10–500 ms), sequence-based port mapping, and real-time status reporting (valve position, actuation count, temperature monitoring). When integrated into AIGIS-certified automation frameworks, full audit trails—including user-initiated valve commands, timestamped position changes, and error logs—are retained in accordance with ALCOA+ principles and support 21 CFR Part 11 electronic signature enforcement.

Applications

• Automated multi-column chromatography (e.g., tandem Protein A + ion exchange + SEC purification)
• High-throughput screening of buffer conditions using parallel column switching
• Fraction collection with timed or peak-triggered valve actuation for purity-driven pooling
• System priming, column equilibration, and wash cycle orchestration without manual tubing reconfiguration
• Integration into continuous chromatography platforms (e.g., periodic counter-current chromatography, PCC)
• Process analytical technology (PAT) workflows requiring synchronized valve timing with UV, conductivity, and pH sensors

FAQ

What is the maximum allowable pressure for the 3-position 8-port column positioning valve?
The rated maximum operating pressure is 3.0 MPa at 25°C for all configurations with 0.75–3.0 mm internal bores. For 3.2 mm and 4.0 mm bore variants, the limit is 1.5 MPa.
Can these valves be cleaned in place (CIP) using 0.5 M sodium hydroxide?
Yes—PEEK and electropolished SUS316L components withstand ≥30 min exposure to 0.5 M NaOH at ≤50°C. Validation data sheets are available upon request.
Is firmware upgrade capability supported over the fieldbus interface?
Yes—remote firmware updates via RS-485 or CAN are supported using signed binary packages and secure bootloader verification.
Do you provide IQ/OQ documentation templates for GMP installation?
AIGIS supplies customizable qualification protocol templates (including test scripts, acceptance criteria, and evidence tracking matrices) aligned with Annex 15 and ASTM E2500.
What is the typical service life under continuous 24/7 operation?
Based on accelerated wear testing, the expected mean cycles to failure exceed 1 million actuations per port configuration when operated within specified pressure, temperature, and fluid compatibility limits.