The Limitorque LPC series is a compact pneumatic scotch yoke actuator for on/off, inching and light modulating applications on quarter-turn small-to-medium sized valves in general and protective services for the oil & gas market. Equipment performance and safety standards continue to evolve and increase across the infrastructure industries. These stringent demands are particularly dynamic in oil and gas, where perpetually increasing emphases on personnel safety and equipment uptime is the norm. To more aggressively meet these demands, Flowserve Limitorque is offering the LPC Pneumatic Compact Scotch yoke actuator, specifically designed to meet or exceed the latest and most rigorous of these requirements.
Additional information
| Type | Compact Scotch Yoke |
|---|---|
| Action | Rotary |
| Fluid Power | Pneumatic |
| Sizes | 05, 10, 12, 14 |
| Maximum Output | 5500 Nm (4057 ft-lb) |
| Pressure Rating | 174 psig |
| Fail Safe Operation | Last, Closed, Open |
| Enclosure | Nodular Ductile Cast Iron, Carbon Steel ENP Lined, Stainless Steel |
| Seals | NBR Buna, Viton®, and Fluorosilicone |
| Temperature Range | -60°C to 160°C (-76°F to 320°F) Seal Dependent |
| Manual Override | Jackscrew Light, Enclosed Jackscrew, Beverl Gear, Hydraulic Manual Hand Pump |
| Options | Control Panel, Positioners, Limit Switch Box |
Features & Benefits
- The LPC actuator is suitable for use in Safety Integrated Systems in accordance with IEC 61508 up to and including SIL Level 3
- Efficient design based on computational modelling and extensive experimental validation provides high performance with reduced size, weight, and consumption
- Symmetrical and canted scotch yoke types perfectly fit individual valve torque requirements
- Rugged heavy-duty fabricated carbon steel build epoxy painted and Electroless Nickel Plated (ENP) cylinders provide maximum protection against corrosion
- Dust/water proofing to IP66/IP66M and IP67/IP67M according to EN 60529
- 25-year design life and maintenance intervals up to six years, (depending on service conditions, proper installation, operation and maintenance) exceed industry expectations
- Modular construction allows easy on-site maintenance without special tools and without removal from the valve
- Spring return and double acting configurations available (fail open, fail close and fail-in-place capability)
- Jackscrew, Geared and Hydraulic Manual Operators available on request; availability will vary based on size
- High and Low temperature versions available: +160°C to -60°C (320°F to -76°F)
- Wide range of feature and function customizations, including high-speed and high-cycle versions, are available
Case Studies
| Flowserve-Limitorque-Quad-Yoke-FPSO-Case-Study-FLS-VA-ECS-00006-EN-EX-A4-0217.pdf |
Flowserve-Limitorque-Quad-Yoke-FPSO-Case-Study-FLS-VA-ECS-00006-EN-EX-A4-0217.pdf |
