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McGill Leak Detective® Test Kits:

Standard Test Kits
Cart Assembly
Orifice Tubes
Smoke Delivery System
Choosing a Test Kit
Calibration Services

Leak Detective Test Kit Tools:
1. Determine Proper Kit
2. Calculate Allowable Leakage by Leakage Class
3. What Can Your Kit Measure?

4. Calculate Extension Cord Wire Gauge for Leak Detective Fans

Orifice Tubes

You can order our standard or nonstandard orifice tubes individually, in lieu of an entire test kit. Nonstandard orifice tubes are specially designed and calibrated according to the required volume flow and test pressure. They can be calibrated for use in both positive and negative pressure testing situations. When ordering a nonstandard tube, the required volume flow, test pressure, and calibration requirements should be specified.

Standard 4-, 5-, 6-, and 8-inch orifice tubes are calibrated against master tubes, which have been certified to an accuracy of 0.5 percent by an independent laboratory on equipment traceable to the National Institute for Standards and Technology (NIST), formerly the National Bureau of Standards.

The expected accuracy of all our orifice tubes at the time of shipment is 2 percent of the indicated flow rate.

Periodic recalibration of orifice tubes is recommended. Our laboratory has determined that tubes over three years old can be inaccurate by up to 6 percent.

Note: Each orifice tube manufactured by McGill is individually calibrated and marked with an identification number. We keep calibration records from the past 10 years on file in case a chart is lost.


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e-mail us: sales@mcgillairseal.com

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are the property of United McGill Corporation.

Products depicted were current at the time of publication. All product designs,
specifications, and features are subject to change without notice.