IDEX Health & Science

LCGC Europe eNews

IDEX Health & Science offers instrument manufacturers increased pump performance in a new Sapphire Engineering 30,000 psi Check Valve for UHPLC systems.

New for UHPLC! 30K psi Check Valve Engineered To Reduce Preventive Maintenance

Created to maintain pressure in alternating-phase pumps, the lower cracking pressure of the new UHPLC check valve was designed for faster response against competitive models. The patent-pending ball cage design facilitates faster response times and improved flow characteristics through the check valve. This allows for less carryover by removing un-swept volume.

In addition to the innovative design, a new, stronger alloy utilized in manufacturing the check valve increases performance by significantly extending the usable life of the component. Employing Finite Element Analysis on the various components in the check valve design, developers at Sapphire Engineering were able to visualize where mechanical stress caused distortion inside the part at pressures ranging from 20,000 to 30,000 psi. By optimizing the design for additional strength at the pressure points around the internal cartridge and the ball/seat interface, and utilizing computational flow dynamics to maximize internal flow capabilities, the team behind the new check valve projects a markedly longer component lifetime—up to three million pump cycles—and more-consistent pump performance in the laboratory.

An additional requirement of the check valve design was a tunable platform that allows Sapphire Engineering to scale the check valve to the individual pressure and flow characteristics per instrument system using a leak-rate metric.

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