"Continuously Improving Liquid Measurement Technology"

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Providing Small Volume Provers and Sampling Systems to the Liquid Hydrocarbon Industry Worldwide

Small Volume Provers


Our unique and patented Prover design provides highly accurate and repeatable verification of custody transfer flowmeters under field conditions.

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Samplers & Analytical Systems


We manufacture a broad range of samplers for petroleum fluids, providing both standard and customized solutions for your sampling needs.

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Field Service

Flow MDs Factory Trained Service Technicians Provide:

  • Field Service
  • Prover Calibrations
  • Gravimetric Water Draws
  • Master Meter Calibrations
  • Maintenance & Repair
  • Local Inventory - Prover Aftermarket

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About Flow Management Devices

Started in 2007, Flow Management Devices introduced the patented “Next Generation” Small Volume Unidirectional Captive Displacement Prover technology.

Our technological benefits were accepted quickly in the hydrocarbon measurement industry and Flow MD is now recognized as the “World Class Leader” in Small Volume Prover technology.

The 4th Gen line of Small Volume Provers, launched in 2017, delivered performance improvements and technology enhancements. Flow MD once again raised the bar in Small Volume Prover design.

We believe our customers are vital to our continued success, and we strive for Customer Service Excellence by continually and relentlessly improving all aspects of our business.

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Upcoming Events

FMD Attends ISHM 2022

Flow Management Devices participated in the International School of Hydrocarbon Measurement, May 10-12 in Oklahoma City, Oklahoma.

FMD instructed the ...

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