Engineered for precision. Built for you.

Restriction Orifice Calculator
for Real Engineers

Calculate orifice size, flow rate and pressure drop for liquid, gas and steam. A focused engineering workspace.

Start calculating See how it works

Same professional
tool. Less complexity.

Find Size

Determine the required restriction orifice bore for specified conditions.

Learn more

Find Flow

Calculate flow rate through a known restriction orifice.

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Find Pressure Drop

Determine the pressure drop across a known restriction orifice.

Learn more

One workspace. Three calculation modes.

Liquid / Gas / Steam

Built for
real engineers
Methodology review
before design use
Liquid, Gas & Steam
Engineering Reports
Saved Calculations
Methodology Review

Built for Real Engineering
Applications

Whether you’re in oil & gas, power, chemical or process industries, Adriel Engineering brings operating conditions and pipe geometry into one focused workflow.

  • Liquid, gas and steam workflows
  • Multiple unit systems: SI / Imperial
  • Engineering validation and warnings
  • Save and organise your work
  • Professional PDF reports
  • Accessible on any device
Get started
Silver process towers and pipework beneath a blue sky
Built around
engineering practice

Clear inputs. Traceable work.
Review before design use.

How it works

From process conditions
to a professional result.

A simple, guided workflow to help you calculate, validate and document
with confidence.

  1. 01

    Enter conditions

    Input your process and
    fluid data.

  2. 02

    Calculate

    Get instant results with
    engineering checks.

  3. 03

    Save

    Keep your calculations
    for future reference.

  4. 04

    Export

    Prepare a professional
    PDF report.

Try the calculator
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Professional Tools
for Real-World Impact

A single engineering workspace makes process conditions easier to review, with the calculation and its assumptions kept together.

  • Modern, intuitive interface
  • Support for multiple unit systems
  • Save and organise calculations
  • Generate engineering PDF reports
  • Access anywhere, on any device
See the calculator
Trusted by
Professionals
Engineered for
Accuracy
Built on Industry
Best Practice
Global
Accessibility
AI-generated illustrative portrait for Engr. Chidi Nwosu

Illustrative profile · AI-generated portrait & sample quote

“Having the process inputs and calculation modes in one workspace would make our restriction-orifice reviews easier to organise.”

Engr. Chidi Nwosu

Process Engineer

Process design consultancy · Port Harcourt

Frequently Asked Questions

Quick answers to common questions.

What fluids are supported?

The calculator supports liquid, gas and dry steam. Wet steam and conditions outside the documented model limits are rejected explicitly.

Is the calculation methodology approved?

Engineering sign-off is pending. The calculation methods remain subject to review; this release does not provide validated sizing results or claim certification to an industry standard.

Can I generate a PDF report?

Individual and combined engineering reports are part of the planned subscription. Report export will be enabled alongside the approved calculation engine.

Ready to Start?

Create your account and explore the engineering workspace.

Create your account

Professional and Team subscriptions include calculations, saved work and PDF reports. Review method-specific warnings before design use.