Small Volume Meter Provers for Ball Prover Replacement
Flow MD’s Small Volume Provers provide precise, dependable, and cost-efficient alternatives to traditional ball provers. Replacing outdated proving technology with Flow MD’s compact prover models saves on operating and capital expenses (OPEX & CAPEX).
We help plan upgrades that minimize downtime and disruptions to proving operations. Our services include site visits, consultations, installation drawings, and on-site guidance during start-up. The Flow MD Team of experts help transition your proving operations to reliable, modern Small Volume Proving systems with minimal disruptions.
SMALL VOLUME PROVERS FOR BALL PROVER REPLACEMENT

Small Volume Provers for Ball Prover Replacements
Flow MD Small Volume Provers (SVPs) are a cost-effective and accurate alternative to ball provers. With a much smaller footprint, SVPs can be installed in a variety of locations, including onshore and offshore facilities. SVPs are also easier to operate and maintain than ball provers, which results in both CAPEX and OPEX savings over time.
If you are looking for a cost-effective and accurate alternative to ball provers, then Flow MD small volume provers are the perfect solution for you
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- Cost and Accuracy:
- Flow MD Small Volume Provers offer a cost-effective and accurate alternative to traditional ball provers.
- SVPs have a significantly smaller footprint, making them suitable for various locations (onshore and offshore).
- They provide lower uncertainty (0.009% to 0.004%) in comparison to ball/pipe provers.
- Installation Efficiency:
- Small Volume Provers are less expensive to install due to their compact design.
- Minimal construction or site preparation is needed before installing an FMD Prover.
- Maintenance Advantages:
- SVPs are easier to service
- Conveniently replace internal piston seals and external piston shaft seals.
- Self-diagnostic controllers monitor system condition and provide real-time information.
- Water Draw Process:
- FMD Small Volume Provers allow for gravimetric or volumetric water draw.
- Quick water draw process using certified mobile water draw laboratories.
- Fluid Compatibility:
- SVPs are more compatible with a range of liquid hydrocarbon products than ball provers.
- Ball provers may require sphere changes for different products, causing downtime and maintenance issues.
- Flow MD Small Voume Provers work well with crude oil, refined products, NGLs, and hot bitumen.
- Meter Compatibility:
- FMD SVPs work with most meter types.
- Older ball provers may need retrofitting for Coriolis and ultrasonic meters.
- Pulse interpolation methodologies are used for proving manufactured pulse meters.
- Speed of Proving:
- FMD small volume meter provers are significantly faster (up to 80%) due to their smaller volume.
- Small volume prover systems allow quick field water draw operations.
- Most small volume prover water draws can be completed in less than 1 to 2 days.
- Cost and Accuracy:
In summary, Flow MD Small Volume Meter Provers offer a reliable, cost-effective solution for verifying all meter types compared to conventional, ball, or pipe proving technology. Feel free to contact us to learn more about how we can help replace your conventional provers!
FMD Meter Provers are commonly used for the products listed below:
- Bitumen
- Butane
- Condensate
- Crude Oil – Light (API > 31.1)
- Crude Oil – Medium (API 22.3 – 31.1)
- Crude Oil – Heavy (API < 22.3)
- Crude Oil – Extra Heavy (API < 10.0)
- CO2
- Diesel
- Ethane
- Ethylene
- Fuel Oil
- Gasoline
- Isobutane
- Jet Fuel
- Kerosene
- Low Temperature Hydrocarbon Gas Liquids (HGLs)
- LPGs
- LNG
- Methane
- Methanol
- NGLs
- Naphtha
- Petrochemicals
- Propane
- Propylene
- Refined Products
- Other Products (contact factory)
- FMD has over 15 years experience with both simple and complex prover applications
- Smaller footprint
- Less expensive to purchase
- Less expensive to maintain
- Capable of high flow rates
- Reduced weight
- Fast, efficient proving runs
- Better Repeatability
- Compatible with almost all flowmeter types
- Better overall fluid compatibility
- Easier to use on multi-fluid applications
- Simplified Design
- Minimal Downtime for maintenance/service
- No spheres/balls
- No 4 way actuator valve
- Gravimetric water draw
FMD Meter Provers comply with the following standards:
- US/CSA CLASS 1 DIV 1 40°C
- ATEX Ex d mb [ia] IIB T3 Gb -20° to 40°C
- IECEx Ex d mb [ia] IIB T3 Gb -20° to 40°C
- PED
- ISO 9001 Certification
- ISO 17025 (Flow Lab) Certification
- API MPMS Chapter 4
DOCUMENTATION
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