• Overview
  • Specifications

Overview

Cameron DYNATORQUE valve accessories include quarter-turn worm gear actuators that are constructed to the rigorous requirements of American Water Works Association (AWWA) Specification C504. Actuators in this category are totally enclosed, weatherproof, and permanently lubricated. These units are suitable for use in above-ground, buried, and submerged service applications with handwheel, chainwheel, or operating nuts.

Standard materials are cast gray or ductile iron, and the line also offers a varied selection of alternate materials to meet customer application requirements.

Specifications

Model  Unit
Weight,
lbm
Max. Output
Torque, in.lbf
Gear
Ratio
Turns for
90°
Standard
Output
Bore, in
Standard Key
Size, in2
DT8 19 8,000 30:1 7.5 1.750 0.375
DT21W 33 21,000 60:1 15 2.500 0.500
DT36W 78 34,000 53:1 13.25 3.250 0.750
DT50W 105 50,000 212:1 53 3.250 0.750
DT90W
145 77,000 240:1 60 3.250 0.750

   

Model  Standard
Mounting
Pattern 
Quantity
and Size,
in
Standard
Mounting
Pattern
(Bolt Circle), in
Mech.
Adv.
Hand-
Wheel
Size, in
Approx.
Rim 
Pull, lbf
Torque on
2-in Nut,
ft.lbf
DT8 Four 1/2–13
5.000 8.10 24 82 82 
DT21W Four 5/8–11
5.512 15 36 78 117 
DT36W Four 3/4–10
6.496 19  46 78 149 
DT50W Four 3/4–10
6.496 42 36 83 125 
DT90W
Four 3/4–10
10.250 43 46 78 149 

Units with spur assists.

Handwheels listed are recommended sizes to produce full rated torque with the rim effort listed. The formulas listed below will assist you in determining alternate handwheel sizes and rim pull requirements based on your application.

  • To find handwheel diameter for given output torque at a given rim effort, divide the output torque by the mechanical advantage and multiply the result by 2. Then divide this result by the handwheel rim effort. 
  • To find rim effort for a given output torque with a given handwheel diameter, divide the output torque by the mechanical advantage and multiply the result by 2. Then divide this result by the handwheel diameter. Handwheels are not included as part of the operator part list or price.

Bores, keyways, and mounting patterns listed are for Cameron standard stocking units. Please contact Cameron for special bore treatments, costs, and deliveries.