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Home → Catalogue → Pressure control → Control Valves → ADCATrol® Linear electric actuators ADCA AVF234S with spring-return feature
Valsteam ADCA
ADCATrol® Linear electric actuators ADCA AVF234S with spring-return feature

Specifications

  • Actuator construction

    Housing Fire-retardant plastic,
    gear unit made of sintered steel,
    gearbox base-plate made of steel

  • Actuator type

    Electric linear actuator, spring-return feature

  • Actuator direction of action

    Actuator runs, spring driven, into its respective fail-safe position (thrust rod extended),
    In modulating duty, the end position seating is made via limit switches.

  • Positioning force

    2 kN

  • Positioning speed

    from 0,17 to 0,50 mm/s

  • Rated stroke

    40 mm.

  • Temperature of medium

    Max. 130 ºC (180 or 240 ºC with accessories)

  • Enclosure protection

    IP 66

  • Control signal

    control via 2-point or 3-point-step controllers (standard),
    analogue input signals (0 to 10 V, 0(4) to 20 mA)

  • Supply voltage

    24 V DC (standard),
    230 V AC and 100 V AC 50/60 Hz

  • Power consumption – 24 V

    10 W

  • Manual Emergency Control

    Crank handle for external manual adjustment with motor cut-off

  • Communication

    Analog signals 0(2) to 10 V, 0(4) to 20 mA.

Documentation

Technical data sheet(s)

ADCATrol® Linear electric actuators ADCA AVF234S with spring-return feature

Product code: E.AVF234S

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DESCRIPTION

The ADCATrol AVF234S valve actuators offer automatic adaptation to the stroke of the valve, precision activation and high energy efficiency with minimal operating noise.
Ideal for use with any DSH series direct steam injection humidifier and in TDS (Total Dissolved Solids) control systems VPC blowdown valves.
In case of power failure/interruption, the AVF234S actuator runs, spring driven, into its respective fail-safe position (thrust rod extended). In modulating duty, the end position seating is made via limit switches.

MAIN FEATURES

IP 66 protection.
Automatic detection of control signal with LED indications.
Adjustable characteristic curve (linear, quadratic and equalpercentage) and running time via DIP switch.
Automatic adaptation to valve stroke.
Manual operation with disengagement of the actuator motor.
Mechanical stroke indication.
Spring-return feature (AVF234S).
Switching input (2-point or 3-point-step control) or analogue input (0...10 V or 4...20 mA).

OPTIONS AND ACCESSORIES

Split-range unit for adjusting sequences.
230 V AC and 100 V AC power supply modules.
Auxiliary change over contacts.
Potentiometers, e.g. for 3-point-step in closed loop. Adapters for high temperature conditions.

AVAILABLE MODEL

AVF234S – Fail-safe with spring-return.

Documentation

Technical data sheet(s)

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