ARCA-REGLER Series 811 Pneumatic Actuator

Description

This is a pneumatic multi-spring diaphragm actuator from ARCA-REGLER, part of the proven Baureihe 811 series. Designed for modulating control of industrial valves, this unit provides precise positioning and reliable operation. This specific model is configured for a DN 50 valve and operates on a 0.6 to 1.4 bar control signal. Its robust construction makes it suitable for various process industries. It is a direct replacement for an identical unit, ensuring seamless integration into your existing plant infrastructure. Order now from PLC2Day for expert support and fast delivery.

Specifications

• Manufacturer: ARCA-REGLER
• Series: Baureihe 811
• Actuator Type: Pneumatic Multi-Spring Diaphragm
• Control Signal Range: 0.6 - 1.4 bar
• Max Actuating Pressure: 6 bar
• Function: OE (Oeffnet bei Entlastung / Spring-to-Open)
• Intended Valve Size: DN 50

Label Info

• App. Nr.: 246 829
• K. Nr.: 34/91
• Baureihe: 811.396
• Sitz-o (Seat dia.): 32 mm
• Kv-value: 18 GL

Application

This actuator is designed for use with control valves in various industries, including chemical, power generation, food and beverage, and general process engineering, for the control of liquids, gases, and steam.

Country of Origin

Made in Germany.

CO2 Impact

By reusing this part, you are avoiding the emission of approximately 36 kg of CO2, which is the equivalent of driving a standard car for 180 km. This is a small but significant contribution to a more sustainable industrial practice.

Availability

This item is a used, tested part in excellent working condition. Available for immediate dispatch.

FAQ

Question?
What does the 'OE' function mean on the label?

Answer
OE stands for "Oeffnet bei Entlastung" in German, which translates to "opens on pressure relief". This means it is a "fail-open" or "spring-to-open" actuator. If control air pressure is lost, the internal spring will push the valve to the open position.

Question?
Can this actuator be used with a valve from a different manufacturer?

Answer
While technically possible if the mounting yoke, stem connection, and travel stroke are compatible, it is strongly recommended to use this actuator with the originally intended ARCA valve body. Mismatched components can lead to poor control performance, damage, and safety risks.

Question?
The label lists DN 50, but the actuator seems separate. What does this refer to?

Answer
The DN 50 (Nominal Diameter 50 mm) refers to the size of the control valve body this actuator was originally mounted on. The actuator itself is sized to provide the necessary force and stroke to operate a DN 50 valve under the specified process conditions.

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Last Update: Friday, March 13, 2026