Valco Valve by VICI (VICI Series)
| Brand | VICI |
|---|---|
| Origin | USA |
| Manufacturer Type | Authorized Distributor |
| Product Origin | Imported |
| Model | VICI Valco Series Valves |
| Pricing | Available Upon Request |
Overview
The Valco valve series by VICI represents a benchmark in high-precision, low-dead-volume fluidic switching for analytical instrumentation—particularly gas chromatography (GC), liquid chromatography (LC), and automated sample introduction systems. Engineered using proven Couette-flow sealing principles and ultra-precise machining tolerances, Valco valves deliver exceptional reproducibility, minimal carryover, and long-term stability under repeated actuation cycles. Each valve is constructed to meet the stringent mechanical and chemical compatibility requirements of modern separation science, supporting both inert and reactive gas/liquid streams across ambient to elevated temperature environments. Designed and manufactured in Houston, Texas since 1968, VICI’s Valco line adheres to ASME B16.34 and ISO 9001-compliant production protocols, ensuring traceable quality control and material certification for every component.
Key Features
- Multi-port configurations: 6-way, 10-way, 12-way, 14-way, and 16-way rotary valves—available in manual, pneumatic, solenoid-driven, and microprocessor-controlled actuation variants.
- Valve body materials include 316 stainless steel (SS), Hastelloy C-276 (HC), Inconel 600 (IN), Monel 400 (M4), Nickel 200 (N1), Nickel 201 (N5), Titanium (Ti), and Zirconium (ZR) — selected for corrosion resistance and thermal stability in aggressive chemical environments.
- Rotary seal materials: Valcon E (ethylene-propylene elastomer), Valcon E2 (high-temp EPDM), Valcon H (fluoroelastomer FKM), Valcon M (perfluoroelastomer FFKM), Valcon P (polytetrafluoroethylene composite), Valcon R (reinforced PTFE), Valcon T (thermoplastic elastomer), Valcon TF (low-extractable FFKM), and Valco X (ultra-inert perfluoroelastomer).
- Standard port sizes: 1/32″, 1/16″, 1/8″, and 1/4″ compression or VCR fittings; internal flow paths with nominal diameters ranging from 0.25 mm (0.010″) to 4.0 mm (0.156″).
- Compatible with column diameters of 3 mm, 4 mm, and 6 mm — enabling integration into packed, capillary, and microfluidic GC/LC manifolds.
- Dead volume minimized to <10 nL per port interface — critical for quantitative loop injection and trace-level analysis.
Sample Compatibility & Compliance
Valco valves are routinely deployed in regulated laboratories performing method development and routine QC/QA testing under GLP and GMP frameworks. Their construction supports compatibility with carrier gases (He, H₂, N₂), corrosive analytes (e.g., HCl, HF, SO₂), and organic solvents (acetonitrile, methanol, chlorinated hydrocarbons). All metallic components comply with ASTM F899 for wrought stainless steels and ASTM B167 for nickel alloys. Elastomeric seals conform to USP Class VI biocompatibility standards where applicable. Valves intended for pharmaceutical or environmental applications may be supplied with full material traceability documentation and calibration certificates aligned with ISO/IEC 17025-accredited practices.
Software & Data Management
While Valco valves are inherently hardware-based switching devices, their integration into automated platforms is supported via industry-standard electrical interfaces: 24 VDC solenoid coils, 3–24 V digital TTL inputs, and RS-485 Modbus RTU protocol for programmable controllers. When paired with VICI’s optional digital valve controller modules (e.g., VICI DVC-16), users gain audit-trail-capable operation logs, cycle counter tracking, and firmware-upgradable timing profiles — features essential for FDA 21 CFR Part 11 compliance in regulated workflows. Valve status feedback signals (open/closed position confirmation) are available for real-time system monitoring and error detection within LIMS or SCADA environments.
Applications
- Gas chromatography: Column switching, heart-cutting, backflushing, and multidimensional GC (MDGC) configurations.
- Liquid chromatography: Solvent selection, gradient formation, fraction collection, and online SPE coupling.
- Automated sampling: Integration with autosamplers, purge-and-trap systems, and dynamic dilution calibrators.
- Process analytics: In-line monitoring loops for petrochemical, semiconductor, and environmental emission testing.
- Research instrumentation: Custom manifold design for catalytic reaction studies, isotopic labeling experiments, and kinetic profiling.
FAQ
What is the maximum operating pressure for standard Valco valves?
Standard configurations support up to 1000 psi (69 bar) at 25°C; pressure rating varies with material selection and temperature — consult VICI’s technical datasheets for derated curves.
Can Valco valves be used with hydrogen carrier gas?
Yes — provided valve bodies are constructed from compatible alloys (e.g., SS, HC, or Ti) and seals are rated for H₂ service (e.g., Valcon M or Valcon TF). Hydrogen embrittlement mitigation is addressed during material specification.
Are replacement parts and service kits available?
VICI supplies complete rebuild kits—including rotor seals, stator plates, drive mechanisms, and torque-limiting tools—with documented maintenance intervals and OEM-recommended torque specifications.
Do Valco valves require periodic recalibration?
No — as mechanical switching devices without embedded sensors, they do not require calibration. However, performance verification (e.g., leak testing, dead volume measurement) is recommended per laboratory SOPs or ISO/IEC 17025 quality assurance schedules.
Is custom port layout or actuation logic available?
Yes — VICI offers engineering support for application-specific configurations including non-standard port angles, hybrid actuation schemes, and integrated heating/cooling jackets upon request.
