System's high-pressure, low dispersion, quick-connect sealing interface relies on the polymer's outstanding chemical resistance and mechanical performance under pressure
A state-of-the-art high performance liquid chromatography (HPLC) system featuring Victrex Peek polymer parts has been developed by Optimize Technologies of Oregon City, USA.
The system's patented high-pressure, low dispersion, quick-connect sealing interface relies on the polymer's outstanding chemical resistance and mechanical performance in extreme pressure conditions.
HPLC works by pumping solvents around a system through very narrow tubing at high pressures.
"It is important that the fluid connections are reliable for the instrument components that are placed in-line in the flow path," says David Ingram, marketing manager at Optimize Technologies.
"The traditional way of making these connections involves the use of compression fittings, which are prone to leakage and can cause costly instrument downtime while the problem is fixed".
Optimize Technologies's revolutionary quick-connect sealing interface, called Opti-Lynx, has overcome these problems.
By using Victrex Peek polymer, Optimize Technologies was able to satisfy two important parameters for working in HPLC.
Firstly, the low volume/low dispersion design allows it to be used anywhere on an HPLC system, and, secondly, it can withstand operating pressures of up to 410bar.
To make an Opti-Lynx connection, two components - a slotted side and a pinned side - come together around a Victrex Peek polymer insert.
Engaging the quick-connect device exerts considerable force on the Peek polymer tip of the insert as it is pressed into a cone shaped stainless steel receptacle on the mating component.
This spring-loaded connection creates a robust seal with just a quarter turn, whilst the system's ease of access facilitates maintenance and repairs within seconds.
HPLC involves working with a wide range of organic solvents and it is important to ensure that these liquids do not degrade the materials that are being used in-line.
With its superior chemical resistance, Peek polymer contributes to an extended service life and reduced down time.
The tolerances of the mating surfaces are critical in the Opti-Lynx design.
Peek polymer's combination of high strength, dimensional stability and creep resistance produces parts with outstanding dimensional accuracy, whilst its consistent ease of processing makes it an easy material to work with.
