Flow MD Provers

Flow MD (FMD) offers a comprehensive line of small volume provers reinforcing FMD’s position as the Technological Leader in Captive Displacement Provers.

The complete line of Unidirectional Captive Displacement Provers includes twelve sizes, flow ranges from 100 GPM to 24,500 GPM (142 BPH to 35,000 BPH) and a 1200:1 turndown ratio. Mounting options include permanent installation or truck/trailer mounting for field proving.

It is important to prove flow meters on a regular basis to eliminate inaccuracies caused by product and process variations. Proving a meter ensures accurate measurements for process control, allocations or custody transfer while reducing financial uncertainties and maintaining profitability.

FMD Provers can be used to calibrate / verify the accuracy and repeatability of the following meter types:

  • Coriolis Mass
  • PD
  • Turbine
  • Ultrasonic

Applications Include:

  • Crude Oil
  • Refined Products
  • High-Pressure NGL’s
  • Various Process Fluids
  • Cryogenic

Our unique and compact design utilizes pulse interpolation electronics, a patented drive end, a motor driven piston with durable carbon fiber belts, a smooth bore cylinder, a poppet valve and optical position sensors.

See the video How a Prover Works.

Flow MD’s patented prover design provides an accurate and fast measurement with minimal product displacement. Designed to be easy to operate, with self diagnostics and long wearing seals made of proprietary PTFE blends.

Our product quality is outstanding and we back that belief with a (4) year warranty (seal excluded), the longest in the industry.

The Flow MD line of Unidirectional Captive Displacement Provers incorporates Double Chronometry as recognized by API 4.6 and is in compliance with API 4.2 Direct Master Meter Proving.

For additional quality certifications Click here

Download Prover Brochure