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Text version of the page
1. DIE CAST ALUMINUM END CAPS:
standard polyester powder coated
2. CONCENTRIC SPRING SETS:
Zinc phosphate treated
High corrosion resistance and reliability
Spring sets to suit different air pressure/torque requirements
Extra long fasteners to allow safe dismantling for maintenance
Same body dimensions for DA/SR versions
3. END CAP SCREWS/ADJUSTING SCREWS:
Stainless steel as standard
EXTERNAL CONNECTION:
Namur slotted shaft - in accordance with the international standard
to provide a self-centering positive drive for positioners and
switches.
Namur solenoid mounting - manufactured in accordance with
this
international standard permitting direct mounting of a wide variety
of solenoid valves on Models 52 to 140
4. PINION MADE IN STEEL:
One piece high strength alloy steel pinion shaft, precision
machined
gear teeth for precise fit, efficiency and long life. Standard pin-
5. EXTRUDED ALUMINUM BODY UNI 6060:
Hard-coat anodized as standard finish 45-50 (micron)
Good wear resistance
High corrosion resistance
6. POM PISTON GUIDES:
Large contact area
Low friction, self lubricating material
Long life
7. SEALS
NBR standard version
Viton® high temperature version
SILICON low temperature version
8. PISTONS MADE FROM DIE CAST ALUMINUM:
TWIN RACK AND PINION DESIGN:
Constant torque output
Compact design
Balanced internal forces
Robust design to ensure long life
•NOMINAL VALUES:
Pressure rating max 115 PSI
Temperature range:
standard (-4°F;+185°F), high (-4°F;+302°F), low (-40°F;+185°F)
Pre lubricated for life of actuator at assembly
100% fully factory tested
•ROTATION ADJUSTMENT 0-90°:
From Models 52 up to 140
•standard ±5° in both clockwise and counterclockwise direction
by
means of adjusting screws outside the internal air supply
chambers
•adjusting cam with plane faces for manual adjustments
•standard visual position indicators
Models 160-200-270
•standard ± 5° in counterclockwise direction by means of
Pneumatic
Actuators
3
Actuators and Controls
3
8
7
6
4 5
1 2
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