Bulk Terminal Prover

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500L & 200L Volumetric Provers


Keeping your equipment accurate has never been easier. Westmor can help spec your prover to make sure fuel can flow at full capacity for one minute. Find designs made to last for years to come.

Prover by Westmor


Choose from standard sizes or customize your prover to your operation.

Standard sizes available:

  • 100 gallons
  • 500 gallons
  • 1,000 gallons
  • 1,500 gallons


Choose from skid, trailer or chassis-mounted designs. The most common material for provers is stainless steel but we also manufacture them out of carbon or galvanized steel upon request.

  • Stainless steel type 304 tanks
  • Hinged cover assembly with latch
  • Adjustable scale assembly calibrated in gallons and cubic inches
  • Thermowell for thermometer
  • Bottom outlet/calibration valve
  • Ladder with platform 200 gallons or larger
  • Design to other specifications is available upon request