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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

ModelAH
Without handwheelwith Handwheel
MT1R180300450
MD1D180300450
MT2R270398651
MT2D270398651
MT3R400681890
MT3D400681980
MT4R59011001700
MT4D59011001700

NoItemCodeDetailed explanaon of codeSizing case
1SeriesMTPneumac diaphragm actuatorMT
2Model1Effecve area of diaphragm: 100cm²2
2Effecve area of diaphragm: 320cm²
3Effecve area of diaphragm: 720cm²
4Effecve area of diaphragm: 1500cm²
3Action typeRReverse actionR
DDirect action
4
5Temperature codeNoneStandard type -29~70 (°C)L
LLow temperature type -40~70 (°C)
6++++
7Handwheel codeNoneWithout hand wheelS
SWith top handwheel
ModelEffective area of the diaphragm cm2Stroke(mm)Output force (N)Weight
without Hand WheelWith Hand Wheel
MT1R100202000815
MT1D100202000815
MT2R3203048001828
MT2D3203080001828
MT3R72060100004665
MT3D72060180004665
MT4R15001001300095130
MT4D15001001950095130

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