Free Engineering Calculators & Tools

Accurate, standards-based calculators from ValveAnswer — free to use and free to embed on your own site.

CalculatorWhen to apply itPipe flowvelocityCheck erosion:> 3 m/s in liquid is riskValve CvSize the valvefor given flow and ΔPSteam flowVerify linesizing for steam servicePressure classQuickly checkif current class is sufficient
Use calculators at the sizing stage, then verify against vendor data. Qualitative. Illustrative cross-section; not to scale.
Free valve engineering calculators (schematic)Pipe flow velocityQ, D → velocity inpipeValve CvQ, SG, ΔP →required CvSteam flowP, ΔP, pipe size →mass flowPressure classP, T, material →ASME class
Engineering calculators eliminate manual error and speed valve specification. Illustrative cross-section; not to scale.

Valve Flow Rate Calculator (Cv & ΔP → Flow)

Find the actual flow through a valve from its Cv and pressure drop. Liquid, gas and steam modes, automatic choked-flow d…

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Pipe Flow Velocity Calculator

Calculate fluid velocity in a pipe from flow rate and inner diameter, with Reynolds number and flow-regime check. Free.…

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Steam Flow Through a Valve Calculator

Calculate saturated or superheated steam mass flow through a valve from Cv and pressure drop. Free, ISA-based, with supe…

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