Vapor Recovery
Runs On Our Drives.
Tank VRUs and flare gas compressors demand drives that handle rapid load swings, explosive-rated environments, and continuous unattended operation. Phase drives are built for it.
VRU Compressors Are Hard On Standard Drives.
Vapor recovery units run in some of the harshest conditions in oil and gas: remote tank batteries, high ambient heat, and wildly variable inlet pressures as tanks fill and empty throughout the day.
Standard drives trip on nuisance faults, corrode in wet and chemical-laden air, and can't handle the inrush and torque demand when a compressor loads up against backpressure. Downtime means venting, costing you money and compliance standing.
- Nuisance trips on inrush and backpressure spikes
- Corrosion and condensation in outdoor NEMA 3R enclosures
- No remote visibility, meaning unknown downtime on unmanned sites
- Oversized drives to handle torque peaks, wasting panel space
- Flared gas = lost product revenue + emissions penalties
Variable Speed Control That Matches System Demand.
A Phase VFD matches compressor speed to actual vapor pressure, running fast when tanks are full and production is high, slowing down when the system is light. You capture more gas, run the compressor within its best-efficiency range, and eliminate the constant-speed on/off cycling that wears out equipment.
Built-in soft-start reduces inrush. The LHX Series active front end handles the line-regenerative events that occur when compressor backpressure unloads. Phase Connect gives your team remote visibility 24/7.
- Variable-speed control tracks inlet vapor pressure in real time
- Soft-start reduces inrush, with no nuisance trips on startup
- LHX Series handles regenerative events without braking resistors
- NEMA 3R panel shop options for outdoor environments
- Phase Connect cellular monitoring lets you know status from anywhere
What Makes Phase Right
For Vapor Recovery
Variable Speed
Match compressor speed to actual vapor demand. Run at optimal efficiency, not a fixed RPM dictated by a contactor.
Soft Start
Reduce inrush on compressor startup and dramatically reduce mechanical stress on couplings and seals.
Phase Connect
Cellular remote monitoring for unmanned tank batteries. See run status, fault history, and runtime hours from your phone, no site visit required.
Outdoor Rated
NEMA 3R enclosure options. UV-resistant, corrosion-resistant, and built for extreme temperatures.
Low Harmonics
LHX Series active front end meets IEEE 519 with no external harmonic filters needed. Important for multi-drive installations sharing a common transformer.
Backpressure Ready
The LHX Series handles line-regenerative events that occur when compressor backpressure unloads, returning energy to the grid instead of dumping it as heat.
SCADA / Modbus
Standard Modbus RTU/TCP for integration into field SCADA systems. Monitor and control drive parameters without an additional communications module.
Panel Shop Ready
Need a complete panel? Our UL 508A shop builds listed VRU control panels with VFD, bypass, motor protection, HOA, and pressure transducer wiring, shipped and tested.
Products For
Vapor Recovery
From a compact standalone VFD to a fully integrated panel shop build, Phase has a drive solution sized for your compressor and your site.
LHX Series
The active-front-end VFD for high-demand compressor applications. Returns backpressure braking energy to the grid, meets IEEE 519 natively, and handles the torque demands of larger VRU and flare gas compressors without braking resistors.
DXL Series
The compact workhorse for smaller VRU compressors and tank battery installations. Easy setup, field-proven reliability, and a small footprint for tight panel enclosures. Includes built-in motor protection and configurable I/O for pressure transducer feedback.
Panel Shop
Complete VRU control panels built and tested in-house. VFD, bypass, HOA, motor protection, transducer wiring, and NEMA 3R enclosures, engineered for your compressor and shipped ready to mount. One vendor, one SKU, one call if something's wrong.
Built To Spec,
Built In‑House.
Need more than a drive? Our UL 508A panel shop builds complete, listed dewatering control assemblies, including VFD, bypass, HOA, motor protection, and wiring, engineered for your pump HP, input voltage, and NEMA rating.
One Manufacturer from the Drive to the Finished Panel
Choosing the correct pump drive involves more than matching horsepower. Incoming voltage, phase availability, pump type, motor lead length, pressure requirements, environmental conditions, harmonic limits and control preferences can all affect the final system design.
Phase Technologies offers residential drives, general-purpose DXL drives, low-harmonic LHX drives, phase-converting systems, voltage-doubling configurations and customized control panels from a single U.S. manufacturer.
Whether you need constant pressure for a home, three-phase motor control for an irrigation well or a customized low-harmonic panel for a municipal pumping station, our team can help configure a system around the way your site actually operates.
Built In The USA
Proudly American Made
Every Phase drive is engineered, assembled and tested at our Rapid City, South Dakota headquarters — with the industry’s fastest lead times.
BABA Compliant · Build America, Buy America →