Liquid phase stainless steel joints/blade rings/nuts/two-way/three-way/four-way are key components used in liquid chromatography systems (HPLC, UPLC, etc.), mainly used to connect chromatography columns, pipelines, detectors and other components, ensuring that the system has no leakage under high pressure and maintaining the purity of the mobile phase.
Liquid phase stainless steel joint/blade ring/nut/two-way/three-way/four-way
Liquid phase stainless steel joint/blade ring/nut/two-way/three-way/four-wayIt is a key component used in liquid chromatography systems (HPLC, UPLC, etc.), mainly used to connect chromatography columns, pipelines, detectors and other components, ensuring that the system is leak free under high pressure and maintaining the purity of the mobile phase.
Material Properties：
Stainless steel type: 316L stainless steel (low-carbon type) is used due to its excellent corrosion resistance (especially acid, alkali, organic solvents) and mechanical strength.
Surface treatment: Some joints undergo electrolytic polishing or passivation treatment to reduce surface adsorption and dead volume, making them suitable for high-sensitivity analysis.
Key parameters:
◆Voltage endurance range:Up to 17000 psi (1200 bar)
◆Interface type:Thread specifications: commonly 10-32 or 5/16-24.
Sealing method: Cone seal (direct connection form), nut+blade ring (as shown in the figure).
Inner diameter (ID): 1/16 "or 1/8", matched with the pipeline to reduce dead volume.
Application precautions:
Dead volume control: Select a joint that matches the inner diameter of the pipeline to avoid peak broadening.
Compatibility: Confirm that the thread specifications match the chromatograph.
Installation tips:Avoid excessive tightening that may cause thread damage or seal failure.Use two wrenches to twist and prevent the pipeline from twisting.
Maintenance: Regularly check for leaks and replace aging seals.
