▋ Introduction
Bulk COVNA AT Series Spring Return Pneumatic Actuator rack and pinion designed to give long service life with light weight and high performance. The unit will spring back to its rest position in the absence of air making it great for fail safe applications. Features include end of stroke adjustment, visual Indicator, namur interface and ISO mounting interface. Options include IP65 limit switch box with visual Indicator, Namur (direct mount) solenoid valves and a range of inserts to step the drive down.
Refer to IOM to get Spring Return Pneumatic Actuator Design, Symbol, Dimension, Parts, Weight, Assembly & Installation Instructions.
Spring Return Pneumatic Actuator Price: Contact us
▋ Characteristics
High Tensile Spring Sets
High tensile epoxy coated spring sets provide high performance in fail safe and emergency shut down operations.
NAMUR Mounting
Direct mounted solenoid connections according to NAMUR standards.
ISO 5211 Bottom Mounting Connection
Base drilling, for valve mounting, and centering, according to ISO 5211/DIN 3337 standards.
High Visibility Position Indicator
The indicator is to remain on the actuator for continuous indication when limit switch is not being used.
▋ Working Principle of Single Acting (Spring Return) Pneumatic Actuator
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.
▋ Working Principle of Double Acting Pneumatic 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.
▋ Process Flow
CNC Sawing
Sawing with accuracy and precision.
CNC Machining
Advanced CNC machine from German.
Lasering
Lasering production batch and model info.
Semi-finished Products
Partly finished actuators and components.
Actuator Assembly
Manufactured by qualified engineers.
Final Quality Control
All are 100% tested before shipping.
▋ Finished Project
▋ About COVNA
COVNA – Solve your technical questions with solid experience
We are COVNA Automations, one of the top supplier of quarter turn actuators and air operated valve products in Dongguan, China with 18 years experience. Our industrial experience will be useful in your business and projects.
18 Years Operation
Good credit rating. Large quantities of regular clients.
German Imported CNC Machine
Advanced CNC machine, engineer with high accuracy.
ISO 9001 Certificated
With additional certifications that include TUV SGS RoHS.
Affordable Prices
Our prices are both fair and affordable for all people.
Qualified Engineers
Designed and manufactured by experienced engineers.
Well-trained Staffs
Always available to answer your technical questions.
ODM Services
Granted you free access to download 2D & 3D models.
Standardization Production
Assure you of stable product quality and supply capacity.
Same-day Shipping
Always keep a large stock of pneumatic actuated valves.
Field Service
Provide continuous assistance in more than 40 countries.
One Year Warranty, Life Service
A period of twelve (12) months from the shipment date.
Global Presence
Find us at the exhibition or contact local representatives.
