Dynatorque DT

Quarter-turn severe-service gear operators

Overview

Dynatorque DT™ quarter-turn severe-service gear operators provide a single-source solution for both standard and customized gears. Our high-quality products are available with many different frame and spur combinations and in a range of materials.

Applications

These gear operators can be used with manual and automated valves deployed in a range of industries, such as oil and gas, chemicals, paper and pulp, and food processing. In fact, they are suitable for any application that requires valve operation, including marine, submerged, and high- and low-temperature applications.

Benefits

Dynatorque DT gear operators provide you with a mechanical advantage and can be supplied to meet your specific mounting requirements. A robust manufacturing process with rigorous approval standards (such as ISO standards) delivers products you can count on.

Features

Standard mounting or configured to your requirements
Compatibility with American Water Works Association (AWWA) criteria
Valve locking devices
Declutchable and nondeclutchable manual override availability
Partial-stroke test device
Spur and miter gear option
Handwheels

Tech Specs

Model	Unit Weight, lbm	Max. Output Torque, lbf.in	Gear Ratio	Turns for 90°	Standard Bore, in	Standard Key Size, in	Bolt Circle Diameter, in	Mechanical Advantage	Handwheel Size, in	Rim Pull, lbf
Model DT3SG	Unit Weight, lbm 8	Max. Output Torque, lbf.in 3,000	Gear Ratio 30:1	Turns for 90° 7.5	Standard Output Bore 1.000	Standard Key Size, in × in 0.250	Standard Mounting Pattern (Bolt Circle) 3.250	Mechanical Advantage 8.10	Handwheel Size, in 14	Approximate Rim Pull, lbf 53
Model DT7SG	Unit Weight, lbm 14	Max. Output Torque, lbf.in 7,000	Gear Ratio 48:1	Turns for 90° 12	Standard Output Bore 1.750	Standard Key Size, in × in 0.375	Standard Mounting Pattern (Bolt Circle) 5.000	Mechanical Advantage 12.96	Handwheel Size, in 18	Approximate Rim Pull, lbf 60
Model DT21SG	Unit Weight, lbm 33	Max. Output Torque, lbf.in 21,000	Gear Ratio 60:1	Turns for 90° 15	Standard Output Bore 2.500	Standard Key Size, in × in 0.500	Standard Mounting Pattern (Bolt Circle) 5.512	Mechanical Advantage 13.20	Handwheel Size, in 36	Approximate Rim Pull, lbf 88

Notes

Handwheels listed are recommended sizes to produce full rated torque with the rim effort listed.
Bores, keyways, and mounting patterns listed are for SLB standard stock.
Standard mounting patterns on the DT3SG, DT7SG, and DT21SG are four tapped holes, straddling the centerline at 45°.