The sizing equation, run backwards
Valve sizing asks what Cv a flow needs. Gage asks the reverse: what flow does this Cv give at this opening. It uses the IEC 60534-2-1 method for both liquids and gases.
Gage
Know the flow through a valve with no meter.
Most control valves on the unit have no flow transmitter, but the operator still needs to know roughly what is going through. Gage answers from the valve itself — its Cv, trim, the pressures either side and the opening — and checks every point for choking, flashing and cavitation.
5Unmetered valves preset
3Trim characteristics
5Stream presets, liquid and gas
0Flow meters required
MVPEvery figure above is counted in the minimum viable product: the amine train modelled for gas sweetening and post-combustion carbon capture.
What it does
Four things it does that a dashboard does not.
It warns where the simple answer reads high
Every point is tested for choked flow, flashing and cavitation. In those regimes the simple equation overstates the flow, so the tool caps it and says which regime applies.
The stream is known, so the form is short
Pick the valve and its stream — water, lean amine, rich amine, treated gas — and density and vapour pressure are preset. A lab number always wins: one click hands the values back to the operator.
No invented datasheet
Where no vendor sheet is held, Cv and pressures are left blank rather than filled with a number that looks like an answer. The operator enters the real ones.
How it works
The pipeline, end to end.
- 1
Pick the valve
The level valves on liquid drains and rundowns — the ones nobody meters.
- 2
Confirm the stream
Phase, density and vapour pressure follow from the service.
- 3
Enter the readings
Rated Cv, trim, upstream and downstream pressure, and the valve opening.
- 4
Read the flow and the regime
Flow in engineering units, with the regime stated and the installed curve drawn.
Where it applies
Built for amine systems today. Not limited to them by design.
The platform is focused on acid gas removal — gas sweetening and post-combustion carbon capture — because that is where the model is calibrated and where the fault library is real. The method underneath is not amine-specific: a physics reference model, residuals against expected-healthy, fuzzy diagnosis over graded indicators, and costed consequences. Extending it to another unit means new datasheets and a new calibration, not a new platform.
The fastest way to judge this is to open it.
The platform runs on a real amine train with thirteen days of one-minute history behind it. Nothing on these pages is a mock-up.
Open the platform