# AGA-3 Orifice — AGA-3 Orifice Calculations

> AGA-3 Orifice Calculations (iPhone/iPad app by Bjarne Berge.)

- Source: https://appshunter.io/ios/app/aga-3-orifice/id1350504597 (this page in markdown: same URL + `.md`)
- Developer: [Bjarne Berge](https://appshunter.io/developer/1209858941)
- Category: Productivity, Utilities
- Price: $0.99 (on sale, was $6.99)
- Age rating: 17+
- Requires: iOS 15.6 · 1 MB
- Languages: Canadian English
- Released: 2018-02-19
- Data updated: 2026-08-21
- User reviews in markdown: https://appshunter.io/ios/app/aga-3-orifice/id1350504597/reviews.md

## What is AGA?

AGA-3 Orifice calculates size, flow-rate or pressure drop for gas and liquid flow orifice meters based on the American Gas Association AGA Report No. 3 (AGA-3) (also API Manual of Petroleum Measurement Standards, Chapter 14.3).  Orifice Size is calculated from given flowrate and pressure drop, Flowrate is calculated from given size and pressure drop and Pressure Drop requires orifice size and flowrate.  
Different taps can be selected: Flange Taps and Pipe Taps.
Fluids include gases: Natural Gas (Specific Gravity must be provided), Air and Nitrogen, or liquids: Crude Oil, Water, Methanol, Mono-ethylene Glycol, Diethylene Glycol and Triethylene Glycol.  
In addition, selecting orifice material will adjust the sizing parameter of the orifice depending on temperature. 
Customary or SI-units.


## Version history (last 5 releases)

### 6.0 — 2026-01-25

Updated with Xcode 26.0
Minor Bug fixes

### 5.0 — 2024-03-05

Updated with Xcode 15 to IOS 17.

### 4.7 — 2022-03-08

Updated to IOS 15.

### 4.5 — 2020-10-18

Changed Color-scheme to enable Dark Mode.
Updated font-scheme for better iPad support (larger font for iPad).
Minor lay-out changes.

### 4.0 — 2020-07-07

Updated for iOS 13 SDK.
Added 'Share' option in the Results table, enabling users to share, print or file the results from calculations.
Minor 'bug' fixes.

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## More apps by Bjarne Berge

- [Gas-Liquid Leak](https://appshunter.io/ios/app/gas-liquid-leak/id1209858942)
- [ISO-5167](https://appshunter.io/ios/app/iso-5167/id1356345079)
- [Gas-Liquid RO](https://appshunter.io/ios/app/gas-liquid-ro/id1374664837)
- [Line-Fit](https://appshunter.io/ios/app/line-fit/id1448053643)
- [Curve-Fit](https://appshunter.io/ios/app/curve-fit/id1450077815)

All apps by Bjarne Berge: https://appshunter.io/developer/1209858941

## Related topics

[orifice flow](https://appshunter.io/ios/topics/orifice-flow) · [ecoflow delta 3 classic](https://appshunter.io/ios/topics/ecoflow-delta-3-classic)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-21.*