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BR 31a - 2020+

Pneumatic rotary actuator

USAGE

  • Throttling service
  • On/off service
  • Pressure swing adsorption (PSA)

ACTUATOR MOTION
Rotary

RATED ANGLE
90°

SUPPLY
Pneumatic

VERSION
Standard

FAIL-SAFE ACTION
Reversible

Special features

  • Single-acting and double-acting piston actuator
  • Suitable for strict requirements in chemical plants
  • Opening angle 90°
  • Signal pressures up to 10 bar
  • Torques from 18 to 1702 Nm
  • Temperatures from –40 to +80 °C
  • End positions adjustable within wide range (+5°/–15°)
  • Additional pneumatic input at the top shaft end
  • Diagonal or parallel square drive position
  • Position indicator adjustable in steps of 45°
  • Encapsulated spring assemblies
  • Backlash-free force transmission thanks to involute gearing
  • Direction of rotation reversible without requiring additional parts
  • Surface treatment tested by Kesternich sulfur dioxide corrosion test and salt spray test
  • Centering ring milled into the housing
  • Standardized attachment of valve accessories according to VDI/VDE 3845 / NAMUR and VDI/VDE 3847
  • Simple attachment according to DIN EN ISO 5211
  • Blow-out-proof travel stop screws
  • Fast stroking speeds as standard
  • Integrated Automation acc. to VDI/VDE 3847

Accessories

  • Valve accessories
  • Manual gear
  • Locking Device
  • IPM (Integrated Pneumatic Module)
  • NAMUR throttle plates

Options

  • Continuous operation at temperatures from –15 to +150 °C
  • Special seals for temperatures from –55 to +80 °C or from –15 to +150 °C
  • Travel stops extensible between 0° and 90° by using internal or external travel limitation

Information

  • AB 07

    Vent Plugs
    [EN][DE]
  • AB 08

    Filter Check Valve
    Integrated into a screw-on body with G ¼ thread, degree of protection IP 56/66 or NEMA 4
    [EN][DE]
  • AB 11

    Information Sheet
    SAMSON's modular design concept
    Function blocks for valve accessories with NAMUR interface
    [EN][DE]
  • AB SAMLOOP

    SAMLOOP Antriebsausrichtung
    [DE]
  • T DB 31a-22

    BR 31a · PFEIFFER Rotary Actuator Edition 2020+
    Single and double acting piston actuator
    [EN][DE]

Support

  • EB 31a-22

    Pneumatic rotary actuator Edition 2020+
    Single and double-acting piston actuator, type DAP and SRP
    [EN][DE]
  • SH 31a

    BR 31a Quarter-Turn Actuator, Edition 2010 and Edition 2020+
    Type SRP and DAP
    [EN][DE]

Certificates

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