Severe-Service Applications
For saltwater, steam, and corrosive environments
Reduce turns to close and rim pull by 75% in critical environments.
Maxtorque high-performance valve products
Worm-gear solutions that minimize effort
Overview
Maxtorque™ high-performance valve products feature autolock technology that enables high-performance worm-gear solutions with the self-locking characteristics of conventional gearboxes. As a result, less work is required for valve actuation.
Applications
Manual and automated valves for a wide range of applications, including
- oil and gas
- chemicals
- pulp and paper
- food processing
- subsea operations.
Benefits
2–2.5 times more efficient than commodity gears
- Up to 75% less work required
- Enhanced worker efficiency on manual valves, reduced need for actuators, and smaller actuators on motorized valves
- Improved HSE profile
- Quick stroke times when required
Features
- Self-locking design
- Double-enveloping gear set
- Unique tooth form to reduce microscopic stresses
- Superior sealing system and IP68 ingress protection rating
- Rigorous testing and qualification
- Best-in-class construction materials, including bronze output bearings to prevent galling
- ATEX certification
- Compliance with American Water Works Association (AWWA), US military (MIL) specifications, and ISO 9001:2000
- Manufactured in the US
Tech Specs
| Model |
Rated Torque, 1,000 Cycles, lbf.ft |
Rated Torque, 10,000 Cycles, lbf.ft |
Max. Standard Bore, in |
Standard Mounting |
Base Unit Ratio |
Base Mechanical Advantage |
| LW1 | 3,165 | 2,533 | 2.75 | FA16 | 24.33 | 14.72 |
| LW2 | 5,667 | 5,000 | 3.25 | FA25 | 24.33 | 14.72 |
| LW3 | 8,333 | 6,667 | 4 | FA25 | 25.3 | 15.31 |
| BW1 | 16,667 | 13,333 | 5.5 | FA30 | 20.25 | 14.18 |
| BW2 | 33,333 | 26,667 | 6.5 | FA35 | 18.75 | 13.13 |
| BW3 | 48,333 | 46,667 | 9 | FA40 | 22.75 | 15.93 |
| BW4 | 83,333 | 66,667 | 9 | FA48 | 28.25 | 19.78 |
| MW1 | 125,000 | 100,000 | 10 | FA60 | 21.75 | 12.72 |
| MW2 | 187,500 | 150,000 | 10 | FA60 | 21.75 | 15.94 |
| MW3 | 250,000 | 200,000 | 10 | FA60 | 30.75 | 17.99 |
Helpful links
About SLB