Valves for HPLC Systems

Manual injection valves are designed to ensure trouble-free operation with your HPLC system.

HPLC valves are essential for controlling flow direction, sample introduction, and column selection within high-pressure chromatography systems. An HPLC valve may be used in manual injectors, autosamplers, or automated switching setups, helping to maintain precise flow paths, support reproducible injections, and enable efficient method workflows. Common valve types include injection valves, HPLC switching valves, column selection valves, and special function valves for more advanced system configurations. 

At Crawford Scientific, we supply a range of HPLC valve supplies and replacement components for routine maintenance and repair. Key parts such as the rotor seal, stator head, bearing ring, and sample loop help maintain leak-free operation, minimise contamination, and support consistent performance. Available in materials such as PEEK, stainless steel, Vespel, and Tefzel, these components can be selected to suit different solvent compatibilities, pH ranges, pressure requirements, and application needs, helping to reduce downtime and keep HPLC systems operating reliably.