With shut-off valves, the opening angle does not have to be limited to 90°; additional end-position settings can be made individually. A new actuator series from bar with angle extension up to 180° can be used for valves that have a working range beyond the opening angle of 90°.
These include, for example, 3-way valves, pipe diverters or flap boxes in industrial applications, in bulk material handling and water treatment for
- System and valve manufacturers
- Pump and blower manufacturers
- Plant manufacturers
A typical process is the use of a butterfly valve for throttling, which must never close completely, but must remain open by at least 10° to 15° to maintain the pump function. Extended end position adjustment is also necessary for 3-way Y-type valves. Despite different switch shapes, the same drive model can be set up and individually adjusted to the outlet angles.
Economical and safe
Optimum adjustment of the fitting is achieved on the bar-agturn with the aid of a newly developed, patented adjustment cam as well as an adjustment screw for each of the end position settings. With this cam, the adjustment range has been considerably extended. The setting angle of the drive can now be limited up to 20° before the respective nominal end position.
In addition, the special shape of the setting cam ensures that the optimum pressure point is exerted on the setting screw at every set angle. Transverse forces that could damage the screw are thus excluded. This interaction enables precise adjustment to the production process, thus avoiding downtimes. Without constant readjustment and checking during adjustment, there is a considerable time saving.
The fittings are protected, as caking of the medium is prevented and opening against the process flow is not necessary. Another positive aspect is the reduced loss in the batches due to continuous processes. Any desired swivel angle between 90° and 180° can be precisely adjusted to individual fittings with the variable adjustment options and increases availability in the application. The reduced number of variants reduces stock-keeping. At the same time, the SIL 3 certified actuators guarantee increased reliability of industrial plants.
