LMA-B Pneumatic Diaphragm Actuator

The LMA-B pneumatic diaphragm actuator is a spring-diaphragm type actuator for control valves. It converts air signal pressure into linear thrust to drive valve plug for flow regulation. It features stable output, quick response and reliable performance, compatible with various single-seat, cage, angle and three-way control valves. Widely used in petrochemical, power, pharmaceutical and environmental protection industries.

Manufacturing Range

    Model: LMA-B Signal range: 20~100kPa (standard) 

    Action type: Air to Open / Air to Close 

    Diaphragm size: Multiple specifications for different thrust requirements 

    Accessory match: Positioner, air filter regulator, limit switch, solenoid valve

Design Features

    Balanced spring design, stable output force, good linearity.

    Rolled diaphragm, long service life, high sensitivity.

    Compact structure, easy installation and maintenance.

    Positive and reverse action can be converted conveniently.

    Wide matching range for various control valve bodies.


Design Standards

    Design & manufacture: IEC 60534-6

    Inspection & test: GB/T 17213, IEC 60534