2076 NORTHWOODS DR
MUSKEGON, MI 49442
PHONE (231) 788-7025
FAX (231) 788-7030
www.dynatorque.com
ISO 9001:2008 CERTIFIED
Page 1 of 4
IOMSD
IOM FOR DYNATORQUE™ SANDWICH DECLUTCHING MANUAL OVERRIDE (SD TYPE)
Revised: 4-15-11
Scope:
It is the purpose of this document to provide general installation, operation, storage, and maintenance
instructions for DYNATORQUE™ manual declutching override worm gear operators.
NOTE: DYNATORQUE SD automated valve manual overrides may be used with electric, hydraulic or
pneumatic double acting or spring return valve actuators. For purposes of convention, the term
“pneumatic actuator” will be used to refer to torque-generating driving device (actuator). The term
“operator” will refer to the DYNATORQUE manual override.
Installation Tips:
All Cameron DYNATORQUE operators & accessories have been designed to transmit the rated output
torque of the operator. When designing mounting kits, torque transmission devices, or specifying
mounting hardware the operator rating should be considered. Cameron recommends using grade 5 and
higher bolts with lock washers for mounting DYNATORQUE devices to valve actuators, valve mounting
flanges and/or valve adaptation kits. DYNATORQUE components should not be installed in areas where
those components will be subjected to high temperatures, corrosive atmospheres, or high pressures
without prior knowledge by Cameron or unless originally designed for that purpose. Doing so may affect
the product warranty.
Installation:
The Cameron DYNATORQUE model SD manual override operators offer safe and easy positioning of
valves when manually overriding a double acting or spring return pneumatic actuator. Each SD operator
comes complete with a handwheel and machined or blank drive adapter which can be easily removed for
machining to match the pneumatic actuator and valve stem requirements. Before assembly is begun
please ensure that the driver has been machined correctly.
The following steps should be taken to install the DYNATORQUE SD override. Cameron recommends
operator mounting while on the test stand with the valve in the closed position.
Cameron recommends a watertight seal be established at time of installation between the bottom of the
SD and the valve, as well as the top of the SD and the actuator mounting pad. Apply a liberal amount of a
liquid gasket material (Cameron recommends using DOW Corning RTV #732 multi-purpose sealant) on
both surfaces prior to SD installation. Make sure to surround the mounting holes with sealant to assure a
complete seal.
1. Check to ensure that the valve, the override, and the pneumatic actuator, are in the same position. If
the positions do not correspond, rotate the override handwheel either clockwise or counterclockwise
until the correct position is achieved.
2. With the drive adapter removed from the override, place the SD on the valve assembly and loosely bolt
into place.
Note: Mounting holes on some SD overrides break into the housing cavity creating a
grease leak path. The use of Teflon tape is recommended for all valve side bolt installations.
3. Before reinstalling the driver, liberally grease the outside of the driver and the override bore. This may
reduce the possibility of corrosion between the two components.
4. Reinstall the drive adapter making sure the end of the driver configured to fit the valve stem is aligned
correctly.
5. Tighten the valve to the SD override with mounting bolts.
