× You must be logged in to use the orifice calculator.
Gas Flow Calculator
* Please register to unlock these options. Register here.
See our calculator app on the Google Play Store.


Our flow products and custom components are measured in three different tiers:

Standard Components

All standard orifice components are optically measured on instruments that are calibrated with Lenox Laser traceable bar chart standards. No certification is included.

Flow Calibrated Components

All flow calibrated components are measured on instruments that are calibrated with Lenox Laser traceable standards. The component’s packaging will be individually labeled with Part Description, Flow Direction, Flow Reading (SCCM, SLPM, TORR), size in microns, and date. Tolerances will be the same as listed. No certification is included.

Flow Calibrated Components with Certification

Any flow Validated component will be supplied with a Certificate of Validation report containing traceable standards used, test conditions, measurement results and inspection signoff.

Feel Free To Browse our Flow Products:
Orifice Discs, VCR® Gaskets, VCR® Glands, Conflats, Barbs, Nipples, Screws, Tubing, Custom Solutions

For more information on how we calculate flow rate and orifice diameter click here.