Item #Series 39, Series 39 Pneumatic Actuator

Item #Series 39, Series 39 Pneumatic Actuator
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Series 39
Series 39 Pneumatic Actuator
The Series 39 Pneumatic Actuator design is based on the opposed rack-and-pinion principle utilizing piston guide rods to guarantee part alignment. The fully supported guide rods minimize friction and wear between the pistons and the body bore.

In the double acting actuator, compressed air is applied to Port 1. The air flows through the rear guide rod, enters the center chamber to push the pistons apart, turning the shaft counter-clockwise (as seen from above) to open the valve. During this action, air in the end caps is vented through Port 2 via the front guide rod. Action is reversed, i.e. the valve is closed, by applying air to Port 2 and venting air through Port 1.

In a fail-safe spring return actuator, springs are nested in the end caps. The number of springs in each cap depends on the available supply air pressure and required torque output. Air is supplied through Port 1 to the center chamber to push the pistons apart which compresses the springs. During this action, air in the end caps is vented through Port 2 via the front guide rod. When air is vented out through Port 1 (via a three-way solenoid valve) the springs push the pistons back together thus closing the valve. Port 2 is continuously vented. The springs provide a dependable, safe closure in the event of electrical or air supply failure.


Category: Worcester Controls » Automation » Pneumatic Automation » Series 39 Pneumatic Actuator
DOWNLOADS
    AttributesValue
    Item NameSeries 39 Pneumatic Actuator
    Maintenance ManualSeries 39 Installation, Operation and Maintenance Instructions
    39ELK Installation, Operation and Maintenance Instructions
    Actuator Size10
    15
    20
    25
    30
    33
    35
    40
    42
    45
    50
    05
    Operating ModeDouble Acting
    Spring Return
    SolenoidGeneral Purpose Solenoid (TYPE 1)
    Watertight Solenoid (TYPE 4)
    Hazardous Locations Solenoid (TYPE 4, 4x, 7 & 9)
    No Solenoid (No Block)
    Solenoid Voltage (AC) [V]24
    120
    240
    None
    Solenoid Voltage (DC) [V]12
    24
    None
    Limit SwitchesTop Mounted General Purpose Switch (specify SPDT/DPDT, 1 or 2)
    Top Mounted Water Tight (specify SPDT/DPDT, 1 or 2)
    Top Mounted Hazardous (specify SPDT/DPDT, 1 or 2)
    End Mounted Water Tight/Hazardous (specify SPDT/DPDT)
    Special ServicesNone
    High Temperature (N and SN models only)
    Rotary Switch
    Travel Stops
    VariationsS.S. Springs
    Rebreather Gasket
    Namur Solenoid End Cap
    Air Supply [psi]40
    50
    60
    70
    80

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