Critical Orifice Set

To be used as a dry gas meter calibration reference, the Clean Air Engineering Express Critical orifice offers 1/2" brass quick connects with an internal synthetic sapphire orifice disk. A set contains five orifices ranging from 10- 34 LPM, as prescribed in EPA Method 5. Each set comes complete with a dust-proof/moisture proof lifetime guaranteed carrying case. Individual calibration sheets are also included.

Part Number	Item
0020	Critical orifice set
0020-S	Individual critical orifice