Calibrated Orifices for Gas Flow
For use as flow rate standards or gas metering. Graftel, LLC. can provide a stainless steel orifice calibrated to flow at a specified rate for a specified inlet pressure for most gasses.
All orifices are provided with NIST traceable calibrations performed by Graftel in compliance with ISO 17025-2005 certified by L.A.B. For nuclear power applications 10 CFR 50 Appendix B and 10 CFR Part 21 may be applied.
Standard orifice configurations available as shown below. Custom configurations machined in our shop are available quickly and without custom charges.
Orifices can be provided for the below gasses, ranges of inlet pressures and flow rates.
Gas: Air, nitrogen, oxygen, argon, helium, hydrogen, methane, propane, acetylene, ethane, (other gasses upon special request)
Vacuum: 0 to 30 “ Hg
Pressure: 0 to 2000 psig
Flow Rate: 0.1 to 1500 slpm
0.0002 to 3200 scfh
Standard Orifice Configurations
