1/2 Inch Aluminum Alloy 90 Degree Rotary Pneumatic Valve Actuator Spring Return Double Acting Pneumatic Rotary Actuator
COVNA Industry Automation Co.,Ltd
Guangdong, China
Last Login Date:
Jul 23, 2025
Main Products:
Pneumatic Valve, Solenoid Valve, Motorized Valve, Manual Valve, Pneumatic Cylinder, Pneumatic Control Valve, Air Source Treatment Unit, Fitting, PU Pipe, Pressure Gauge
Product Description
Company Info
Basic Info.
Product Description
Feature of Pneumatic Valve Actuator:
DIN3337 and NAMUR Standard for pneumatic accessories.
Twin rack pistons are made from die-casting aluminum treated with hard anodized or made from cast steel with galvanization, symmetric mounting position, long cycle life and fast operation, reversing rotation by simply inverting the pistons.
It has a number of springs inside and will auto return once air is interrupted and it could keep the valve and project safe.
Item | Single Acting/Double Acting Pneumatic Actuator |
Acting Mode | Double Acting, Spring Return (Single Acting) are Available |
Air Supply Pressure | 2.5 to 8bar |
Output Torque | 14 to 1170Nm |
Lifespan | 1,000,000 (1 Million) Times |
Angle of Rotation | 90° ±4° |
Shell Material | Aluminum Alloy Extruded |
Applicable Media | Filtered, Dry Compressed Air, Non-Corrosive Medium |
Ambient Temp. | Standard Type: -20 to +80°C (-4 to 176°F) |
Optional Accessories | Namur Solenoid Valve, Limit Switch, F.R.L, Position Indicator, Manual Device |
Application | Food & Beverage, Refining, Desalination, Petrochemical, Chemical, Pharmaceutical, Textile, Pulp & Paper, Mining, Marine and Power Industries |
Lubrication | There is no need for lubrication for standard type under normal operating conditions. Special lubricants should be used under low or high temperature operating conditions. |
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.
Company Strengths:
Extensive flow control project experience and various product solutions can beoffered.
OEM / ODM service available. Can do JIS 5K / 10K, ANSI 150lb / 300lb / 600lb / 900lb standard.
Inquiry will be replied within 8 hours.
Custom complaints handed by one stop professional service.
ISO 9001certificated, with extra certifications include CE, TUV, RoHS, SGS, BV, explosion & fire safe.
Industrial standard 1 year warranty.
A: As the name suggests, Normally Open valves allow air to pass when they are not energized (or actuated). Normally Closed valves
must be actuated to allow air to pass.
Q: What is the life span of your pneumatic actuators?
A: We have passed 1 million times of product quality test, and obtained the certificate
Q: Does the air actuated valve have a manual override?
A: The air actuator does not have a manual override, but a manual override is provided with optional direct mount solenoid valves.
Q:How fast does an air actuated valve operate?
A: See product specifications. Generally, smaller valves less than 2 inch pipe size, cycle in about one second. Larger valves up
to 6 inch pipe, cycle in about 1.5 seconds. A cycle is per 90° rotation
Q:Can I add a High Temperature kit to an existing Valworx air actuated
A:Yes, you would need to select a kit matching both the actuator and valve mounting patterns. See actuator accessories
Q:Can I mechanically adjust the flow rate of an air actuated ball valve?
A: No, but we do offer pneumatic positioners with 4-20mA or 3-15PSI inputs. Positioners allow user to adjust flow 0-100%.
Q:Can I use the air actuated ball valve outside?
A: Yes, air actuated valves are weatherproof per materials of construction. Do not exceed minimum and maximum temperature
specifications.
Q:Do you have a way to confirm the air actuated valve is in the closed position? Open position?
A: Yes, we offer an optional valve monitor/limit switch box. Monitor contains (2) dry contact limit switches used to confirm open
and closed position. There is also a highly visual valve position indicator.
Q:What is the maximum allowable fluid velocity?
A:Metal valves: 5 to 10 feet/second, closer to 5ft/sec is better PVC valves: < 5 feet/second
Q:Can you customize the color of the actuator?
A: We can customize different colors, LOGO and so on according to customer's requirements.
