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Heavy Duty Scotch Yoke Pneumatic Actuator

Structure: Scotch Yoke Type

Type: heavy duty

Temperature: Ordinary Temperature

Acting Type: Spring Return

Operation: Double Acting ;Single Acting

Applicable Media: Water, Oil, Gas, Nitric Acid, Acetic Acid

Keyword: Scotch Yoke Pneumatic Actuator

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High Frequency Scotch yoke pneumatic actuator for valves
heavy duty pneumatic actuator
Scotch yoke pneumatic actuator
Scotch yoke pneumatic actuator for valves
single acting scotch yoke pneumatic actuator
Product Detail

Scotch Yoke pneumatic actuator Specifications

1). Hydraulic Actuator Oil Supply Pressure: Up to 100 bar ( 1449psi )

2). Pneumatic Actautor Air Supply Pressure: Up to 10 bar ( 116psi )

3). Output Torque: Up to 160000 Nm ( 11790261 bf-in )

4). Temperature Range:

Standard: -20°C ~ +80°C

Low Temperature: -40 °C~ +80°C

High Temperature: -20 °C~ +120°C

5). Type: Double Acting, Single Acting ( Spring Return ) 6). Optional accessories: solenoid valves, limited switch, electric position

7). Lubrication: All the moving parts are coated with lubricants, extending their service life


Scotch Yoke Pneumatic Actuator Functions and Accessories


Double acting pneumatic actuator: two-position control of valve opening and closing.
Spring reset type: when the circuit or gas line is cut off or there is a fault, the valve automatically opens or closes.
Single electric solenoid valve: the valve opens or closes when the power is supplied, and closes or opens when the power is off (explosion-proof type scotch yoke pneumatic actuator is available).
Double electric solenoid valve: the valve opens when one coil is energized, and the valve closes when the other coil is energized, with memory function (explosion-proof type is available).
Limit switch feedback device: long-distance transmission of valve switch position signal (explosion-proof type is available).
Electrical positioner: according to the current signal (standard 4~20mA) size, the medium flow of the valve is regulated and controlled. (Explosion-proof type scotch yoke pneumatic actuator is available).
Pneumatic positioner: according to the air pressure signal (standard 0.02~0.1Mpa) size, the medium flow of the valve is regulated and controlled.
Electrical converter: converts the current signal into an air pressure signal, and is used in conjunction with the pneumatic positioner (explosion-proof type scotch yoke pneumatic actuator is available).
Air source processing triplex: including air pressure reducing valve, filter, oil mist collector, which can stabilize the air source pressure, clean and lubricate the moving parts.
Manual operation mechanism: automatic control can be operated manually under abnormal conditions.




Scotch Yoke pneumatic actuator Benefits:

High Frequency Scotch yoke pneumatic actuator for valves Structural diagram


1.Corrosion-resistant connectors

All connection bolts are stainless steel with good corrosion resistance

2.Piston ring

The piston guide ring, made of ultra high molecular polymer, has an extremely low coefficient of friction, while the material has high hardness and excellent wear resistance, providing precise guidance and long service life.

3.Body

The cylinder body is processed with high precision and anodized. The thickness of the oxide layer is more than 20μm. It has low friction coefficient and excellent anti-corrosion and wear resistance.

4.Shaft bearing

Prevent direct contact between shaft and cylinder body, ensure the positioning accuracy of drive shaft, reduce friction loss, make the scotch yoke pneumatic actuator efficient operation.

5. Piston bearing

Ensure the positioning accuracy of the piston, so that the piston can be smooth and smooth operation, prevent shifting.

6. Pin connection

The fork and the drive shaft are connected by pins to ensure that the fork and the drive shaft run synchronously. At the same time, the pins also play a role in preventing the drive shaft from flying out, which is a reliable and safe design.


Scotch yoke pneumatic actuator Part Number and Material:

scotch yoke pneumatic actuator Part Number and Material


scotch yoke pneumatic actuator Schedule


Pos

Description

Material

1

Cylinder 1

Aluminium Alloy

2

Piston

Aluminium Alloy

3

Shaft

Alloy Steel

4

Yoke

Alloy Steel

5

Piston pin

Alloy Steel

6

Yoke pin

Alloy Steel

7

Bearing

Alloy Steel

8

Upper circlip

Stainless Steel

9

Lower circlip

Stainless Steel

10

Upper washer

Crystalline Polymer

11

Lower washer

Crystalline Polymer

12

Upper shaft O-ring

FKM

13

Lower shaft O-ring

FKM

14

Upper shaft bearing

Crystalline Polymer/Graphite Copper Bushing

15

Lower shaft bearing

Crystalline Polymer/Graphite Copper Bushing

16

Upper piston bearing

Crystalline Polymer

17

Lower piston bearing

Crystalline Polymer

18

Piston ring

Crystalline Polymer

19

Piston O-ring

FKM

20

Piston support chip

Crystalline Polymer

21

Connection plate O-ring 2

FKM

22

Connection plate 2

Aluminium Alloy

23

Plate socket screw 2

Stainless Steel

24

Cover socket screw

Stainless Steel

25

Nut O-ring

FKM

26

screws

Stainless Steel

27

End Cover Seal Ring

FKM

28

Double Acting End Cover

Aluminium Alloy

29

Set Screw

Stainless Steel


Note: 1)180-260 scotch yoke pneumatic actuator body is split type.

2)140-260 not included.

Above illustration for internal structure demonstration only,not for all scotch yoke pneumatic actuator models and parts.

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