DIAPHRAGM ACTUATOR

PNEUMATIC DIAPHRAGM LINEAR ACTUATOR
SINGLE ACTING TYPE

The PROVAL diaphragm actuator spring opposed diaphragm actuator provides precise, high thrust performance in a lightweight, compact format. The diaphragm actuators are designed afresh applying multi-spring type, so that these actuators are materialized to be miniaturized and light weighted as a new style. The PROVAL diaphragm actuators provide the operation to control the valve travel balancing between the force on the diaphragm by the signal air pressure, and the spring force.

By combining PROVAL positioner, the series brings about high accuracy of positioning.

DIAPHRAGM ACTUATOR (SINGLE ROTARY TYPE)

PNEUMATIC DIAPHRAGM ROTARY ACTUATOR
SINGLE ACTING TYPE

The “DB” rotary stem motion type diaphragm actuator, with single-spring design, offers dependable, high thrust performance in a compact, lightweight package. It obtains a required rotary output by converting a linear output into a rotation force through the scotch yoke construction. The linear output is created by balancing two forces.

The type “DB” is a yokeless, direct-acting diaphragm actuator for either throttling or on-off service. Principle applications include operation of butterfly and segmental ball valves, damper, and other similar equipment.

CYLINDER ROTARY ACTUATOR (HIGH-TORQUE)

CYLINDER ROTARY ACTUATORHIGH TORQUE
SCOTCH-YOKE TYPE

The double acting and Spring return Cylinder actuators are powerful, highperformance pneumatic actuators that provide positive modulation or on-off operation for rotary stem motion type control valves and many other quarter-turn (90°) rotating

  • · The PROVAL pneumatic actuator series was engineered and produced
    to provide maximum torque output with minimum supply pressure.
  • · Simplicity, reliability and economy being at the top of the list of
    design parameters.
  • · The PROVAL actuator is suitable for any quarter turn application
    such as ball, plug, butterfly valves or dampers, in both On-Off and Modulating
    heavy duty service.

CYLINDER ACTUATOR

PNEUMATIC CYLINDER LINEAR ACTUATOR

The PROVAL Cylinder actuator designed for a wide range of globe valves. PROVAL Cylinder actuator uses in control or on/off services. Actuator’s thrust capacity is much greater than similar size diaphragm type actuator because of air pressure as high as 700Kpa (7bar) being used.

PROVAL Cylinder actuator operates either as a single acting or double acting type. Positioner is usually mounted on yoke. Double acting type actuator has a two air connection. The cylinder actuators provide the operation to control the valve travel balancing between the force on the piston by the sigal air pressure, and the spring force.

By combining positioner, the actuator brings about high accuracy of positioning.

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