We offer a wide range of ASI nozzles and standard critical orifices (sonic orifice) to suit your dilution application. Critical orifice styles for use with your in-situ and off-stack dilution probes, ESP direct extraction probes, inertial filter dilution probes, laboratory dilutors and more.
Standard materials include glass, quartz, Monel-400® and 316 stainless steel. Standard Max. Temperatures up to 400°C, high temperature critical orifices (sonic orifices) are available for your applications up to 540°C.
For our OEM customers, we offer critical orifices that are custom designed to meet your specific needs.
ASI is a recognized leader in quality parts and the best selection of critical orifice flow rates and materials you will find for your gas sampling instruments and systems.