Linear Gear
Heavy-duty subsea linear gear actuator for precise and reliable gate-valve operation in deepwater environments with pressure-balanced protection and low maintenance design.
The Subsea Linear Gear is a heavy-duty actuation system engineered for subsea gate valves, designed to deliver precise and reliable direct linear motion in the most demanding offshore and deepwater environments. Its robust and simple internal architecture ensures high reliability, long service life, and minimal maintenance. The actuator is supplied fully integrated with its corresponding valve, reducing installation complexity and improving overall system efficiency.
The system is pressure-balanced with an integrated compensation system, making it suitable for ultra-deep subsea installations. It includes ROV override for manual intervention, redundant dynamic sealing for enhanced safety, elastomeric environmental seals to prevent seawater ingress, and a local mechanical position indicator.
With a large installed base and proven field performance, the Subsea Linear Gear is trusted for harsh subsea operations and offers long-term operational stability, low lifecycle cost, and dependable performance under extreme pressure and temperature conditions.
Main Features
- Linear gear mechanism for direct linear motion (e.g. Gate valves)
- Robust and simple internal architecture for enhanced reliability
- Supplied fully integrated with its corresponding valve for optimal performance and reduced installation complexity
- Pressure-Balanced design with integrated compensation system, suitable for ultra-deep installation
- ROV override interface for local manual operation
- Redundant sealing on all dynamic sealing areas
- Elastomeric environmental seal to prevent seawater ingress
- Local mechanical position indicator
- Design validation to API 17D / API 6A or API 6DSSX
- Proven up to Technology Readiness Level (TRL 7) with extensive subsea experience
- Long design life, maintenance-free operation
Options
- Custom design according to project requirements
- Remote position indicators: continuous transmitters and/or limit switches
- Wide selection of electrical connectors
- ROV interface available in multiple orientations
- ROV Bucket extension
- Local position indicator extension
- Drop-in manual torque tool with handwheel for diver operation (shallow water applications)
- ROV bucket debris protection cap
- Client specific Type Approval or Design Validation test
- PED
- Painting according to Customer Specification
Benefit
- Comprehensive range of sizes
- Robust mechanical design for high reliability in harsh subsea conditions
- Field-proven technology with a large installed base
Technical Data
Applications
Configuration
Product Range
- From 20 to 500 mm stroke
- Up to 3.500.000 N output torque
Temperature Range
Water Depth
- Up to 3048 m (10.000 ft)
- Greater Depth upon application
Compensation System
Manual Intervention
Quality Controls
QL-1 or QL-2
PSL-3, PSL-4
Materials
Electric actuation