• Overview
  • Specifications
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Overview

The Cameron DYNATORQUE D-Lock valve-locking device is used with automated valves (pneumatic, hydraulic, or electric) that require lockout capability to prevent valve rotation. This feature is ideal for applications such as maintenance shutdowns when the valve must remain in a locked position even if an actuator is unintentionally engaged. The device is suited for applications where actuators must be locked in either the full clockwise or counterclockwise positions (i.e., locked open or locked closed).

The DYNATORQUE D-Lock device provides lockout capabilities for all types of valve and other rotational devices and is especially effective when the valve requires a constant torque load to prevent leakage.

  • Capable of holding valve in either open or closed position while compensating for hysteresis and machining tolerances (select models provide both open and closed locking)
  • Ideal for torque-seated valves such as triple-offset butterfly valves
  • Applicable for almost any rotating device

Application torque requirements must be accurately calculated for correct DYNATORQUE D-Lock device sizing. These devices are totally enclosed, weather resistant, and permanently lubricated and is designed to mount between the valve and the actuator.

Specifications

Model  Unit
Weight,
lbm
Max. Valve Actuator
Torque, in.lbf
Gear
Ratio
Turns for
90°
Standard
Output
Bore, in
Standard
Key
Size, in
Standard Mounting
Pattern Quantity
and Size, in
Standard Mounting
Pattern (Bolt
Circle Diameter)
D3D-Lock  13.5 3,000 30:1 7.5 1.250 0.250 x 0.180 Four
5/16–18
2.756
D12D-Lock
39 12,000 57:1 14.25 2.000 0.375 x 0.375 Four
1/2–13
4.921
D21D-Lock
56 21,000 44:1 11 2.500 0.500 x 0.500
Four
5/8–11
5.512
D36D-Lock
111 63,000 53:1
13.25 3.250 0.750 x 0.750
Eight
5/8–11
6.496
D60D-Lock
207 140,000 60:1 15 4.000 1.000 x 1.000
Eight
5/8–11
10.000
D260D-Lock
672 260,000 100:1 25 6.250 1.500 x 1.000
Eight
1 1/8–7
14.016

Mechanical advantage is not required because the lockout position of the valve is reached using the powered device. The gears in the DYNATORQUE D-Lock device move its output to the lock position under no-load conditions.

The device can be operated with a standard 3/4-in socket, box end, or adjustable wrench. (These tools are not supplied as part of this lockout package.)

The device is not field adjustable. This device must be ordered as "lock clockwise" or "lock counterclockwise." Provisions must be made to prevent each component in the valve automation package from rotating independently. It is suggested that all components be pinned together at assembly to prevent inadvertent rotation.

If automated valve accessories are installed in corrosive atmospheric environments, consideration should be given to use of stainless steel drivers in lieu of standard carbon steel drivers.