• Overview
  • Specifications

Overview

Cameron DYNATORQUE valve accessories include gear operators that are modified with an infinitely adjustable memory-stop device suitable for valves, dampers, and most other quarter-turn applications requiring a self-locking mechanism.

This configuration is ideal for use when a valve or damper is used for flow control and must always be opened or closed to the same exact position. The addition of a traveling nut module allows repeatable valve travel to the predesignated set point.

Our flexible manufacturing process enables us to offer both standard construction and custom configurations for customer-specific applications. Standard operators are available with various mounting interface dimensions. Custom-machined gears come with bores and bolt holes for direct mounting to the valve. Standard materials are cast gray or ductile iron, and our extensive portfolio offers a varied selection of alternate materials to meet customer application requirements.

Specifications

 

Model  Unit
Weight,
lbm
Maximum
Output
Torque,
in.lbf
Gear
Ratio
Turns
for
360°
Standard
Output
Bore, in
Standard
Key
Size, in2
DT3  7 4,500 30:1 30 1.000 0.250
DT8  19  8,000 30:1 30 1.750 0.375
DT12  26  16,000 57:1 57 2.000 0.375
DT21
34 26,000  60:1  60
2.500 0.500
DT36
78 36,000 53:1 53 3.250 0.750
DT50
105 50,000 212:1  212 3.250
0.750
DT54
108 63,000  318:1  318 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
DT3  Four 3/8–16
3.250 8.10 14 80
DT8
Four 1/2–13
5.000 8.10  24 82
DT12 
Four 1/2–13
4.921 13.68 30 78
DT21
Four 5/8–11
5.512 22.50 30 77
DT36
Four 3/4–10
6.496  19.00  36  105 
DT50
Four 3/4–10
6.496  60.80  20  80 
DT54
Four 3/4–10
6.496  91.20  18  77 

Unit with spur assist.

Notes:

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. 

Bore, keyways, and mounting patterns listed are for Cameron standards. Please consult us for special bore treatments, costs, and deliveries.

Standard mounting patterns on the DT3 through the DT54 are four tapped holes straddling centerline at 45°.