|
|
We realise that the performance of our pneumatic actuators is vitally important to your production process. An actuator that does not function well often has serious consequences for the outcome of the process. That is why quality has been our primary concept in actuator development. El-O-Matic pneumatic actuators are reliable, quality products, continuously providing optimum performance under all circumstances. |
|
|
|
Pneumatic actuators come in two versions: double acting and single acting (spring return). Both versions are designed in such a way that (with the exception of the position indicator) there are no moving parts on the outside. This makes them safe, easy to install and virtually maintenance free. Furthermore, the compact rack and pinion construction means that actuators are lightweight and occupy a minimum of space. |
|
Spring return, single acting actuators are used in most safety systems. Their ability to automatically return the valve to its fail-safe position on air failure provides the vital link for ultimate system shut down. El-O-Matic spring return actuators have modular spring packages, which enable them to be easily applied to a wide variety of supply pressures and operating conditions. |
|
|
Limit stops are necessary where the precise adjustment of the valve’s open position is required. These are standard on all actuators up to 1600 Nm. and optional on the two larger sizes. Actuators with double stroke adjustment are also available for those applications on high performance butterfly valves (closed position). |
|
El-O-Matic actuators comply fully with all the relevant industry standards. Control interfaces for solenoid valves, switch boxes and positioners satisfy the NAMUR standard (VDI/VDE 3845). Valve mounting and drive dimensions are to ISO 5211 standard (option DIN 3337). |
|
|
Actuator sizes up to 1600 Nm. (14160 lbf.in.) are
fitted with drive inserts. This enables actuators to be directly mounted
onto suitable valves and eliminates the need for a bracket and coupling
type mounting kit. The increasing use of direct mounts significantly
cuts the cost of the valve/actuator assembly. Standard actuators are
fitted with square drive inserts in accordance with ISO 5211 (or DIN
3337), but a wide variety of other inserts are also available. Special
inserts may have oversize or undersize squares, or with double-D or
shaft key way forms. These can be supplied on factory built actuators or
as loose items, drive inserts are easily replaceable at distributor or
end user level. |
|
El-O-Matic actuators have a patented 3-point guiding system, full synthetic bearings and a rack & pinion gearing. High precision gear cutting methods provide close tolerances and ensure minimum gear backlash, all of which guarantees virtually the longest working life of any actuator in the industry. |
|
The choice of actuator depends primarily on the valves’ torque
requirement, and with El-O-Matic you have the widest range possible, 12
basic model sizes covering a torque range from 12 to 4000 Nm. (106 to 35400
lbf.in.). |
|
In addition to the standard pneumatic actuators, the following special versions can be supplied.
Special actuators can be built to suit a wide variety of extreme
applications: high temperature, low temperature, offshore, fire safe,
nuclear industry, with different operating media, etc. |
