Type and size
These instructions apply to the following devices types and sizes:
Linear thrust unit: LE 12.1 – LE 200.1
Stem
Thread diameter, flank lead and version of stem.
●
LH = Stem extension for clockwise rotation, i.e. actuator closes the valve in a
clockwise rotation
●
RH = Stem retraction for clockwise rotation, i.e. actuator closes the valve in a
counterclockwise rotation
Commission number
An order-relevant commission number (order number) is assigned to each device.
This commission number can be used to directly download inspection records and
further information regarding the device from the Internet: http://www.auma.com.
For some details, the customer number might be required.
Description of approval plate in explosion-proof version (option)
Figure3: Approval plate in explosion-proof version (example)
[1] Ex symbol, CE mark, number of test authority
Classification:
[2] Gas explosion protection
[3] Dust explosion protection
2.2. Short description
AUMA linear thrust units of types LE 12.1 – LE 200.1 are designed for the operation
of industrial valves, e.g. globe valves.
They are used in combination with multi-turn actuators on valves which require linear
travel.The linear thrust units convert the output torque of the multi-turn actuator into
an axial thrust. As an option, AUMA linear thrust units are available with damping
device to compensate for changes in lengths caused by varying temperatures, for
example.
7
LE 12.1 – LE 200.1
Identification
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