api 5000Over two days and 500 plasma sample injections, the API 5000™ system demonstrates excellent reproducibility and stability for the response of the compound and internal standard. =Pressure Rating:- API 6BX-2000 PSI WP (With BX type Ring Gasket) Nominal Size B Flange Thickness T Hub Diameter J1 Groove Depth E Added Hub Thickness J4 263⁄ 4 30 4.97 5.28