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Pneumatic Rotary Actuator Air Actuator Spring Return Valve Pneumatic Actuated Plastic Valve
Principle of Single Acting Actuator (Spring Return)
CCW
Air to port A forces the pistons outwards, causing the springs to compress, The pinion turns counterclockwise while air is being exhausted from port B.
Loss of air pressure on port A, the stored energy in the springs forces the pistons inwards. The pinion turns clockwise while air is being exhausted from port A.
CW
Air to port B forces the pistons outwards, causing the springs to
compress, The pinion turns counterclockwise while air is being
exhausted from port B.
Loss of air pressure on port A, the stored energy in the springs
forces the pistons inwards. The pinion turns clockwise while air is
being exhausted from port A.
Principle of Double Acting Actuator
CCW
Air to Port A forces the pistons outwards, causing the pinion to turn counterclockwise while the air is being exhausted from Port B.
Air to Port B forces the pistons inwards, causing the pinion to turn clockwise while the air is being exhausted from Port A.
CW
Air to Port A forces the pistons outwards, causing the pinion to
turn clockwise while the air is being exhausted from Port B.
Air to Port B forces the pistons inwards, causing the pinion to
turn counterclockwise while the air is being exhausted from Port A.
► Construction
1, Indicator
Position indicator with NAMUR is convenient for mounting
accessories such as Limit Switch box, positioner and so on.
2, Pinion
Thepinion is high-precision and integrative, made form nickelled-alloy steel, full conform to the latest standards of ISO5211, DIN3337, NAMUR. The
dimensions can be customized and the stainless steel is available.
3, Actuator Body
According to the different requirements, the extruded aluminum
alloy ASTM6005
Body can be treated with hard anodized, powder polyester painted (
different
Colours is available such as blue, orange, yellow etc. ), PTFE or Nickel
plated.
4, End caps
Die-casting aluminum powder polyester painted in differentcolours, PTFE or Nickel plated.
5, Pistons
The twin rack pistons are made form Die-casting aluminum treated
with Hard anodized or madeform Cast steel with galvanization. Symmetric mounting position, long
cycle life and fast operation, reversing rotation by simply inverting the pistons.
6, Travel adjustment
The tow independent external travelstop adjustment bolts can adjust± 5° At both open and close directions
easily and precisely.
7, High performance springs
Preloaded coating springs are made form th High-performanceterial for resistant to corrosion and longer service life, which
can be denounced safelyand conveniently to satisfy different requirements of torque by
changing quantity of springs.
8, Bearings & Guides
Madeform low friction, long-life compound material, to avoid the direct
contact between metals. The maintenance and replacement are easy
and convenient.
9, O-rings
NBR rubber O-rings provide trouble-free operation at standard
temperature ranges. For high andlow temperature applications Viton or Silicone.
► Pneumatic Valve Actuator
Spring return actuators
1. Pistons outwards, causing the springs to compress, The pinion turns counterclockwise while air is being exhausted from port B.
2. Loss of air pressure on port A, the stored energy in the springs
forces the pistons inwards. The pinion turns clockwise while air is
being exhausted from port A.
3. Air to port B forces the pistons outwards, causing the springs to compress, The pinion turns counterclockwise while air is being exhausted from port B.
4. Loss of air pressure on port A, the stored energy in the springs
forces the pistons inwards. The pinion turns clockwise while air is
being exhausted from port A.
H.S CODE: 8412390000
Model:
Export area:North America Central-South America ASIA Europe Africa Oceania
Introduction:
VS series pneumatic actuators (rack& pinion) have the following
features.
> 15 actuator models, the output torque from 9NM to 4620Nm at 6
bar air supply.
> Bottom drilling complies with ISO5211/DIN3337 to match valve,
interface for solenoid valve, shaft top end and top drilling for
assembling accessories are in accordance with VDI/VDE3845 (Namur)
standard and +/- 5 degree stroke adjustment.
> The actuator body & piston are over 20um hard anodized
treatment and over 100um epoxy coated on end caps which meet ASTM
B117 qualification, over 500 hours salt spread test, no corrosion
onactuator.
> The end cap can be blue, black, grey, yellow etc. As your
request.
> PTFE, Nickel, Epoxy, Polyester and Ceramic coated against
corrosive & abrasive environment are available.