EHA+ · Mesa, Arizona
DriveDrive Power applies its patented Drive-Drive electrohydraulic gear pump architecture — positioned as fly-by-wire for hydraulics — to large-bore Emergency Shutdown Valves across midstream and upstream oil & gas. The EHA+ replaces the legacy HPU with a closed, motor-redundant, firmware-reconfigurable actuator engineered for deterministic safe-state response.
Why EHA+
Pneumatic ESDVs run out of torque density above roughly 20″–24″ / ANSI 600. Conventional hydraulic systems carry an HPU, an umbilical, and a fluid-management burden. The EHA+ collapses the supply chain into a self-contained, electrically powered actuator — with the deterministic closure profile, fail-safe stored energy, and SIL2-grade reliability that large-bore pipelines demand.
Two independently driven prime movers replace the single shaft of a conventional external gear pump — the foundation of the EHA+ architecture and the platform's redundancy story.
Patent family: US 10,072,676 · US 10,808,732 · US 11,408,442 →Accumulator-backed fail-close with two-stage closure profile (typically 70% fast / 30% slow) keeps Joukowsky surge within 120% MAOP on large-bore liquid pipelines.
36″ reference: 20 s controlled closure →Gap-control, torque-control, and fixed-differential synchronization modes with tooth-by-tooth LUT corrections — a single hardware platform configured by firmware for the site.
Dynamic Drive-Drive control: US 12,535,071 →Reference Design (Use Case)
A trunnion-mounted, full-bore quarter-turn ball valve with split-body construction, flanged ASME B16.5 / B16.47 RF or RTJ ends, CS body with SS/Inconel trim and PTFE fire-safe seals — engineered against API 6D / ISO 14313, API 607 fire-safe performance, and ISO 15848 Class B fugitive emissions.
| Parameter | Reference value |
|---|---|
| Actuator output torque | 300,000 Nm |
| Operating pressure | 120–210 bar (normal 150–180 bar) |
| Volumetric efficiency | ~88% |
| Accumulator capacity | ~300 L (≥ 3 strokes) |
| Reservoir | ~400 L · ISO VG 32/46 mineral oil |
| Fluid cleanliness | ISO 4406 16/14/11 |
| Flow / line size | 650 L/min · 32 mm hydraulic lines |
| Position feedback | D1 LVDT + LSO / LSC end-of-stroke switches |
| Interfaces | Hardwired SIS discrete I/O · SCADA via Modbus/DNP3 · optional HART |
Applications
Selected from a Bain-led workshop with industry advisors as the highest-priority oil & gas applications for EHA+ — targeting the ~$2.0 B EHA+-relevant slice of the global valve actuator market.
Large-bore block valves on hydrocarbon transmission lines — the primary EHA+ design target.
Wellhead and production-manifold ESDVs where torque density and fail-safe response matter most.
Footprint-constrained installations where the closed EHA+ eliminates topside HPU and umbilical mass.
Closed-loop architecture and ruggedization path positioned for subsea isolation when qualified.
Intellectual Property
The EHA+ sits on a US and international patent portfolio covering the Drive-Drive pump, linear actuator integration, hydrostatic transmission, flow-through shaft, and dynamic Drive-Drive control.
Two independently driven prime movers — the core architecture.
US 10,072,676 · US 10,808,732 · US 11,408,442
Integrated pump, proportional valves, and controller as a single module.
US 10,539,134 · US 11,242,851 · US 12,421,985
Closed-loop power transmission built on the Drive-Drive pump.
US 10,465,721
Integrated accumulator and motor-cooling routing through the pump shaft.
US 10,294,936 · US 11,067,170
Gap-control, torque-control, and fixed-differential synchronization with tooth-by-tooth LUT corrections.
US 12,535,071 (granted Jan 2026)
Continuous diagnostic checks of a gear pump in a fluid system — foundation of AI predictive maintenance.
US 2025/0035111 A1 (allowed May 2026)
Request a technical briefing on the EHA+ platform, redundancy architectures, and reference designs.