Worm-Gear Operators - MAXTORQUE Products | Schlumberger Products

Worm-Gear Operators

MAXTORQUE high-performance valve products

Efficiency. Durability. Quality.

MAXTORQUE high-performance valve products include self-locking worm-gear solutions that reduce your workload to operate a valve by 75%. This improves your HSE profile and worker efficiency on manual valves and smaller actuators on motorized valves.

MAXTORQUE Worm Gear Operators

Features

  • 2× to 2.5× the efficiency of commodity gears
  • Self-locking design
  • Double-enveloping gear set
  • Unique tooth design to reduce microscopic stresses
  • Superior sealing system
  • Handling of torques in excess of 1,00,000 lbf.ft [1,355,818 N.m]

Benefits

  • Reduces work by up to 75%
  • Reduces turns, handwheel size, and rim pull
  • Reduces stroke time
  • Improves HSE profile

Applications

  • High-performance, metal-seated ball and butterfly valves
  • Large butterfly valves
  • High-torque and high-thrust rising stem valves
  • Marine and subsea with pressure compensation
  • Declutch and partial stroke
  • River and sluice gate valves
  • Remote or DC service (limited power availability)
  • High-cycle, high-precision process control
  • Extreme-temperature environments
Model
Rated Torque, 1,000 Cycles, lbf.in
Max. Standard
Bore, in
Standard Mounting, Min./Max. Max. Stem
Engagement
Base
Unit
Ratio 
Base
Mech.
Adv.
LW1 3165 2.75 FA14/FA19 3.5  24.33 14.72
LW2 5667 3.25 FA16/FA25] 4.5 24.33 14.72 
LW3 8333 4 FA19/FA30  5.375  25.3  15.31
BW1 16,667 5.5 FA25/FA40 7.5  20.25  14.18
BW2 33,333 6.5 FA30/FA48 8.375 18.75 13.13
BW3 48,333 9 FA40/FA60  9.5  22.75 15.93
BW4 83,333 9 FA40 />FA60  10.25  28.25 19.78
MW1 125,000 10 FA48 />FA60  15.75  21.75 12.72
MW2 187,500 10 FA48 />FA60  15.75 21.75 15.94
MW3 250,000 10 FA48 />FA60 15.75 30.75 17.99 
MW4 312,500 12 FA48 />FA60 15.75 42.25 24.72
MW5 375,000 14 FA48 />FA60 15.75 42.25 24.72
MAXTORQUE Worm-Gear Operators
MAXTORQUE Worm-Gear Operators
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