Please Note: You are viewing the unstyled version of ATC, Inc. Either your browser does not support CSS (Cascading Style Sheets) or it is disabled. As a result, much of this website will not look the way it was intended, although all of its contents will be accessible to you. For more information, visit our Browser Support page.

Skip to Primary Site Navigation, Secondary Site Navigation, Content, Company Address

Home > Leak Testing Products > Equivalent Channels (EC)

Equivalent Channels (EC)

Cross Section of 15 Micron Equivalent Channel

Cross Section of 15 Micron Equivalent Channel

The Equivalent Channel is the geometric definition of leak tightness — Simple and Ambiguous Specification. It is independent of test type, location, temperature, pressure and test fluid! The Equivalent Channel is used as your calibrated leak device.

Equivalent Channel has a large length/diameter ratio unlike Equivalent Diameter or Sharp Edge orifice.

From many years of experience, our engineers have found that geometric definition is the most reliable way to define your product's leak test integrity requirements.

Equivalent channels meet the requirements of US-CAR, SAE J2587 for US-CARB LEV II + PZEV, EURO-5 Hydrocarbon Emission Standards and Major OEM Leak Tightness Specifications.

  • Equivalent Channel Standard (ECS)
  • Equivalent Channel Diameter (ECD)

These products are available and are assembled using advanced micro-fabrication technologies. The ECD/ECS are constructed from Silica (glass) and encapsulated in stainless steel housing. Our unique manufacturing process ensures a uniform and smooth bore.


Top of Page
ESC 15 & 20

Click to Enlarge

Notes:

  1. 1.0 — Leak flow is measured in actual cc/min, pressure in absolute pressure psia. Both are measured upstream (inlet) to the orifice.
  2. 2.0 — Flow rate and EC sizes are used for reference only. Actual value may change from EC to EC.
  3. 3.0 — The enclosed data is not applicable to vacuum applications.

Interested in our products? Please contact us.

Print Equivalent Channels Diameter / Equivalent Channels Standard - PDF (361K)


Top of Page