MT Series Pneumatic Diaphragm Actuator

MT SERIES PNEUMATIC DIAPHRAGM ACTUATOR

MT Series Pneumatic Diaphragm Actuator

The MT series pneumac diaphragm actuator is designed with a single-spring or multi-spring structure, providing an axial output thrust. It is compact in structure, light in weight, small in size, performs highly, has a long service life, and delivers a significant output thrust. It is used in conjunction with GLOBE control valves, globe valves, and other straight-stroke valves, facilitating a tight and easy valve closure.
Working principle: The electrical signal from the control instrument, aer being converted into air pressure by thepositioner or solenoid valve, is input into the diaphragm chamber. This pressure acts on the diaphragm to generate thrust, causing the output shaft to move.

MT actuator has excellent versality and interchangeability. In the field, the acon mode can easily be reversed.by simply flipping the upper and lower diaphragm chambers, Its unique design, which requires no external air supply tubing, means air is supplied to the posioner and actuator through holes in the mounng bracket,eliminang the need for external tubing. Compared to tradional designs, this arrangement is more reliable and requires less space for control valves assembly. This method ensures a safe air supply to the actuator and significantly simplifies the assembly process of the posioner.

Structure and Characteristics

MT SERIES PNEUMATIC DIAPHRAGM ACTUATOR Structure and Characteristics1

MT1 actuator

Prevent the push rod from loosening, and improve the stability of the connection

Service life >200,000 cycles, ensuring long-term maintenance-free operation for customers.

Tightly connected without gaps, easy to disassemble, high regulating precision and stability.

Double sealing, long-lasting seal without external leakage

Smooth operation, without random movement,low friction and high operational precision

Compact structure, occupies small space,large output force.

MT2 and MT3 actuators

Prevents the push rod from loosening, enhancing connection stability

Operational life of over 200,000 cycles,ensuring long maintenance-free periods for customers.

Double sealing, long-lasting andleak-proof.

Closely connected with no gaps, easy to disassemble, high adjustment precision, andhigh stability.

No external air source tubing required, reduces the space needed for positioner installation, and decreases the number of potential leak points, regulating more stable.

Enables quick interchangeability between direct and reverse action,improving the efficiency of on-site changeovers of operational modes for users.

Operates smoothly without creep, low friction, and high action typeprecision.

Enhances the pressure resistance of the diaphragm cover, and increases the output thrust of the actuator.

MT SERIES PNEUMATIC DIAPHRAGM ACTUATOR Structure and Characteristics2

GET MORE INFORMATION

  • Long-term operaon, maintenance-free to keep working
  • Zero leakage of valve stem during long operaon cycles
  • Bellows’ operaonal service life>500,000 mes
  • High regulang precision
  • Fast response speed
  • Convenient and quick on-site valve maintenance
  • Wide temperature range(-196℃~588℃)

VMV equipped with either pneumac diaphragm actuator or electric actuator according to the user’s on-site energy

MT SERIES PNEUMATIC DIAPHRAGM ACTUATOR Overall Dimensions

Model A H
Without handwheel with Handwheel
MT1R 180 300 450
MD1D 180 300 450
MT2R 270 398 651
MT2D 270 398 651
MT3R 400 681 890
MT3D 400 681 980
MT4R 590 1100 1700
MT4D 590 1100 1700

No Item Code Detailed explanaon of code Sizing case
1 Series MT Pneumac diaphragm actuator MT
2 Model 1 Effecve area of diaphragm: 100cm² 2
2 Effecve area of diaphragm: 320cm²
3 Effecve area of diaphragm: 720cm²
4 Effecve area of diaphragm: 1500cm²
3 Action type R Reverse action R
D Direct action
4
5 Temperature code None Standard type -29~70 (°C) L
L Low temperature type -40~70 (°C)
6 + + + +
7 Handwheel code None Without hand wheel S
S With top handwheel
Model Effective area of the diaphragm cm2 Stroke(mm) Output force (N) Weight
without Hand Wheel With Hand Wheel
MT1R 100 20 2000 8 15
MT1D 100 20 2000 8 15
MT2R 320 30 4800 18 28
MT2D 320 30 8000 18 28
MT3R 720 60 10000 46 65
MT3D 720 60 18000 46 65
MT4R 1500 100 13000 95 130
MT4D 1500 100 19500 95 130

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