Product Details
Place of Origin: Jiangsu, China
Brand Name: OEM
Certification: CE,ATEX,ISO,SGS
Model Number: DA,SR
Document: Product Brochure PDF
Payment & Shipping Terms
Minimum Order Quantity: 20
Packaging Details: 1) foam packing inside,one carton box outside 2) then put all carton box in one strong plywood case for sea transport
Delivery Time: 3-15days
Supply Ability: 5000 sets per month
Metarial: |
Extruded Aluminum Alloy |
Colour: |
Black, Gray, Blue, Or As Customers' Requirement |
Application: |
Ball Valve, Butterfly Valve |
Connection: |
ISO 5211,DIN 3337 |
Structure: |
Rack And Pinion |
Type: |
Double Action And Single Action |
Metarial: |
Extruded Aluminum Alloy |
Colour: |
Black, Gray, Blue, Or As Customers' Requirement |
Application: |
Ball Valve, Butterfly Valve |
Connection: |
ISO 5211,DIN 3337 |
Structure: |
Rack And Pinion |
Type: |
Double Action And Single Action |
AT DA/SR rack and pinion quarter-turn pneumatic rotary actuators for butterfly valves ball valves
Pneumatic Actuator
Double-Acting Pneumatic Actuated Ball Valves
Double-acting uses air to move internal pistons (racks) in two directions, which rotates the actuator pinion 90°. The pinion is connected to the ball valve stem and opens or closes the ball valve as it rotates. Double-acting actuators will return to the normal position when power is lost and can be configured as either normally open or normally closed. In the event that air supply is lost, double-acting actuators will stay in their current position.
Spring-Return Pneumatic Actuated Ball Valves
Spring-return uses air to move the internal pistons in one direction and springs in the other. These actuators are normally supplied as an air to open, spring to close operation, but can be supplied as air to close, spring to open. The mechanical springs can be susceptible to spring fatigue, making double-acting a better choice for high-cycle applications. Spring-return actuators will fail to the normal position in the event of either power failure or loss of air supply.
Double-Acting with Failsafe
Gemini Valve now offers an industry first double-acting pneumatic actuator with failsafe. This combines the durability of a double-acting actuator with the failsafe normally only offered by spring-return models. The actuator operates in a double-acting configuration until power or air pressure is lost, and springs engage automatically to return the valve to the normal position.
| Material | Extruded Aluminum alloy |
| Rotary Angle | 0~90 degree |
| Structure | rack and pinion rotary actuator |
| Working Pressure | 2~8bar |
| Surface Treatment | hard anodizing |
| Working Temperature | Normal Temperature: -20ºC(-4°F) ~ 80ºC (+176°F); High Temperature: -15ºC(+5°F) ~ 150ºC (+302°F); Low Temperature: -40ºC(-104°F) ~ 80ºC (+176°F). |
| Connection | NAMUR, ISO5211 and DIN3337 |
| Application | ball valve, butterfly valve, and rotary machine |
| Cup Color | grey, black, sky blue, dark blue, red, orange |
Auto-control in the field of electric power, petrochemical, metallurgy, petroleum, gas, town, construction, drainage, chemical industry, oil refining, mining, power plant, metallurgy, architecture, medicine, food, gas, scientific research, etc
-1). Our design, material and size are definitely accord with ISO9001:2008, CE Certificate and ATEX Certificate.
-2). Our piston is treated thermal quenching to obtain better strength and prolong using life.
-3). The surface of our actuator body is treated hard anoidizing to against rust and scratch.
-4). We provide with OEM service
-5). Strict quality control
-6). Better quality at a better price
-7). Excellent After-service.
-8). Fast delivery time
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