ARCA Regler GmbH

ARCA Regler GmbH

- Model 811 - Diaphragm Actuators

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The universal diaphragm actuator, type UMA 811, is a product line comprising four sizes of actuator The stem features a twin design and both interfaces for adapting to the valve are identical to facilitate toggling between the two directions. Instrumentation can be added by way of standardized NAMUR ribbing An emergency override facility is available as an option. A tensioning screw as commonly used in pneumatic regulation is used to adapt the spring preload to the actuating forces required with pinpoint accuracy. This, in conjunction with different-sized centric springs, enables a very broad range of actuating forces to be optimally set High accuracy is achieved by making adjustments at the outward-facing side, in the installed state, with further fine-tuning possible during operation.

Internal development of the double-acting piston actuator, type 81 2.MFI-DWK. allows us to accommodate the special requirements associated with large driving forces in both directions as well as very short actuating times for extremely high switching frequency. The basis for this is proven control actuator technology and the combination of compact design, long service life, and high availability. The interfaces have also been retained so that the integrated positioner assembly can be used with the integrated air ducting as has the valve interface, allowing accessories to be retrofitted at any time.

  • High level of availability
  • Broad range of actuating force
  • Short actuating times
  • No hysteresis
  • Easy to maintain
  • One version for several applications
  • Ultra-high operational reliability
  • Compact design
  • Clear, easy-to-read instrumentation
  • Minimal space required
  • Compliant with accident prevention regulations
  • Quick response
  • Splash-proof in every installation position
  • Wide range of applications

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