Air actuated high quality products pneumatic actuator for butterfly valve

General Specification:

1)   Linear torque output

2)   POASR: Spring return

      POADA: Double acting

3)   Wearing sliding bearing

4)   Dual piston rack-and-pinion design

5)   Use for long time and no maintenance

6) Accord with ISO5211, NUMUR standard

Operating temperature:

Standard product: -30°C to 100°C

FKM O-rings:15C° to 150°C

Silicon O-ring:-40° to 80°

Maximum working pressure: 8bar(116 PSIG)

Combined the spring seat load

Solenoid valve for the installation of NUMUR standard

According to NAMURVDI VDE 3845 standard installation each device

According to ISO 5211 and DIN 3337 standard connection

Position indicator can be also used to operate mechanical limit switches .

This series of product has experienced several decades of development and technological improvement,

It has many advantages such as operation reliability, operating life long, wide adjustable range, strong corrosion

and specifications full rang with perfect functions and a strong marketing function. and widely used in petroleum,

natural gas, chemical, electricity, papermaking, water treatment, heating, power plants, light industry and other industries.

Our company is specialized in manufacturing pneumatic/electric actuators and control valves. Our company is located in Pudong New Area of Shanghai. Covers an area of 1,200 square meters. We have set up a head office,

a sales department, a technical department, a purchase department, a production department, a QC department, a supply department, and a finance office in our company.

We have a perfect processing center and quality inspection equipment. Our processing center owns 40 sets of lathes, milling machines, and boring lathe numerical control machines. There are 5 imported vehicle processing centers and many high-quality numerical machines.

At present, we mainly manufacture pneumatic actuators, pneumatic ball/butterfly valves, electric actuators, pneumatic/electric control valves, and other wise products. Our products are widely used in petroleum, chemical industry, electric power, metallurgy paper making, light industry, pharmacy industry and food industry.

Our company absorbs advanced technologies. We use CAD, CAE, CAM, FEA and finite element analysis to design products. Our products have attained ISO9001:2000 international quality system certification.

We hope that we may get a good reputation for high-quality products, reasonable prices and perfect services of customers' support with the aim of "a long-term cooperation based on equality and mutual benefits".

Product processing and Inspecting:

Pneumatic actuator:

Body material: Die-casting aluminum alloy,  

Hard anodized, epoxy resin coating, can be costing as your requirement;

1) Could you tell me the pneumatic cylinder pneumatic actuator working principle?

Double acting working principle:

(Counterclockwise)

Air to Port 2 forces the pistons outwards, causing the output shaft to turn counterclockwise while the air is being exhausted from Port 4. (Clockwise) Air to Port 4 forces the pistons inwards, causing the pinion to turn clockwise

while the air is being exhausted from Port 2. 

Single acting working principle:

(Counterclockwise)

Air to Port 2 forces the pistons outwards, causing the springs to compress, the pinion turns counterclockwise

while air is being exhausted from Port 4. (Clockwise) Loss of air pressure, the stored energy in the springs forces

the pistons inwards, the pinion turns clockwise while air is being exhausted from port 4.

2) How is the air supply?

----> Supply clean dry air, also can be installation an air filter pressure relief valve of the pneuamtic actuator and 

          Pneumatic valve. it mainly need 3-8bar air supply can be open the actuator and the valve rotary operation.

3) Can it direct mount limit switch box? 

----> The side connection conforms to the VDI/VDE 3845 NAMUR standard can be installed the solenoid valve directly.  The top connection conforms to VDI/VDE 3845 NAMUR standard and the limit switch box or positioner can be direct installed directly.

Dear buyers:

Welcome to view our website, after each transaction, your satisfaction is our aim, your actions will provide our

milk and bread. If you are satisfied with us, please leave a message for me leave five-star feedback. If you are not satisfied or any problems in our valves please don't hesitate to email me and feedback to us, we will do all we can to help you and solve it. Thanks for your support.  Best regards, Arina, Polovo valves, Shanghai.  

Purchase notice:

As many kinds specification of the valves, please feel free to contact with customer service staff when view and any doublts. and when buying pleease confirm the valve working condition, medium, temperature, pressure, diameter, the size of the interface, voltage, and other requirements. for pneuamtic actuator please confirm the torque, cylinder size, working principle or just tell me the modle shows above.  Thanks for your full information. Arina. POV.