ALFACOM ENGINEERING LTD.
ALFAMATIC ALS Limit Switch and Position Feedback Boxes
ALFAMATIC ALS and ALSD series provide valve-position indication and feedback for actuated valves. Select the enclosure and feedback configuration to suit the actuator, control system and installation environment.
ALFAMATIC ALS Limit Switch and Position Feedback Boxes · ALFACOM catalogue
Local Indication and Electrical Feedback
Local indication allows personnel to identify the assembly position at the valve. Switches or sensors provide electrical feedback to the control system, according to the selected configuration.
The ALS and ALSD catalogue covers several enclosure materials, protection concepts and feedback arrangements. Verify the functions and ratings of the exact model.
Mechanical and Electrical Compatibility
Specify the required switches or sensors, contact arrangement, signal characteristics and electrical supply where applicable. Match these to the control-system inputs.
Check the actuator mounting interface, shaft dimensions, bracket and cable entries. In corrosive or hazardous environments, verify the enclosure suitability, model marking and applicable certification before ordering.
Integration with the Valve Assembly
A limit switch box provides feedback; continuous valve-position control requires assessment of a suitable positioner and control signal.
ALFACOM assists with matching feedback equipment to the actuator. An assembled valve-and-actuator package can include an ALS feedback box and ASV solenoid valve to the agreed configuration.
Technical Catalogue
Review the ALS catalogue for model-specific configurations, technical data and dimensional drawings.
Questions About Selection
Can I select a replacement by its appearance?
No. Similar enclosures may contain different switches, sensors, mounting interfaces and protection ratings. Select by model code, electrical requirements and installation conditions.
What is needed to replace an existing feedback box?
Send photographs of the box and nameplate, actuator model, shaft and bracket dimensions, existing wiring details and required feedback signals.
Related ALFAMATIC Equipment
Discuss Your Application
Send your requirements or a photo of the existing equipment for technical assistance and a quotation.
Availability and lead time are confirmed for the requested model and quantity.