MPK-13A-5 Series 2

MPK-13A-5 Series 2 rotary electromechanism

The MPK-13A-5 Series 2 is an aircraft rotary electromechanism used for remote movement of valves, flaps, shut-off units and similar control elements. It is installed in systems where the crew or automatic control equipment must open or close a mechanical unit without direct manual access. The mechanism converts an electrical command from the aircraft DC network into rotation of the output shaft. In aircraft practice, such units are used where a compact, predictable and mechanically strong actuator is needed for air, fuel, hydraulic or auxiliary system control.

MPK-13A-5 in valve and flap control systems

The MPK-13A-5 is designed to work with controlled elements that have a limited angular travel. The output shaft turns the connected valve or flap through the required angle and stops at the end positions defined by external mechanical stops. This makes the mechanism suitable for equipment where the final “open” and “closed” positions are set by the controlled unit itself. The electromechanism does not require continuous manual adjustment during operation. It receives the command, moves the shaft, and holds the connected element in the required position according to the system layout.

Aircraft use of MPK-13A-5 Series 2

The MPK-13A-5 Series 2 is used in aircraft systems that require remote control of shut-off or regulating elements. It may be applied in fuel, hydraulic, air, ventilation or special onboard systems depending on aircraft configuration. The unit is associated with aircraft such as Tu-154 and Tu-22 applications, and it is also listed as an associated electromechanism in actuator assemblies such as 5395VT. Final applicability should always be confirmed by the aircraft parts catalog, system schematic and the passport of the equipment where the mechanism is installed.

Electric drive and end-position operation of MPK-13A-5

The mechanism is normally equipped with a D-10ARU series DC electric motor. During operation, the motor drives the internal reduction mechanism and turns the output shaft. When the connected element reaches the external rigid stop, the power supply to the motor is switched off. This protects the drive from unnecessary loading at the end of travel and makes the mechanism suitable for repeated open / close commands. The design also provides electrical signaling of the shaft end positions, so the control system can receive confirmation that the commanded position has been reached.

MPK-13A-5 under aircraft operating loads

The MPK-13A-5 is built for aircraft service conditions, where vibration, temperature changes and mechanical loads are part of normal operation. The mechanism must provide enough output torque to move the connected valve or flap while maintaining reliable operation of the motor, gearbox, contacts and position signaling elements. During inspection, attention should be paid to shaft movement, backlash, connector condition, motor current, end-position signaling, mounting points and signs of overheating or mechanical damage. A mechanism that is electrically alive but mechanically stiff may still be unsuitable for installation.

Identification and supply of MPK-13A-5 Series 2

For procurement, repair or replacement, the full designation MPK-13A-5 Series 2 should be stated. It is important to clarify whether the requirement is for the electromechanism itself, a complete actuator assembly, a unit from storage, an overhauled unit or a serviceable item with documents. Since the mechanism may be used as part of different aircraft assemblies, interchangeability should not be assumed by appearance alone. Before installation, the unit should be checked against the controlled valve or flap, connection interface, required angle, shaft load and aircraft documentation.

Product Type: Aircraft rotary electromechanism
Designation: MPK-13A-5
Series: Series 2
Function: Remote opening and closing of valves, flaps, shut-off units and regulating elements
Application / Where Used: Aircraft fuel, hydraulic, air, ventilation and auxiliary systems depending on configuration
System / Installation Area: Aircraft control circuits for rotary valves, flaps and shut-off devices
Associated Actuator Assembly: 5395VT actuator unit, depending on configuration
Compatible Aircraft / Equipment: Tu-154, Tu-22 and other aircraft systems depending on installation documentation
Drive Type: DC electric motor-driven rotary mechanism
Associated Electric Motor: D-10ARU series DC motor
Operating Voltage: 27 V DC
Current Consumption: Not more than 1.7 A
Output Shaft Load Torque: 2.5 kgf·m / 250 kgf·cm
Output Shaft Rotation Angle: 30° to 180°
Travel Limitation: By external rigid mechanical stops
180° Rotation Time: 11 seconds ±20%
End-Position Function: Automatic motor power cut-off at external end stops
Position Signaling: Electrical signaling of open / closed end positions
Dimensions: 185 × 69 × 110 mm
Weight: 2.2 kg
Operating Conditions: Aircraft vibration and temperature conditions according to applicable documentation
Technical Documentation: Product passport, aircraft maintenance documentation and system documentation as applicable

All shipments are carried out from our international warehouse in Dubai (UAE), as well as from our partners’ remote warehouses.

In Stock — items available in stock at the Dubai warehouse are dispatched within 5–10 business days after receiving 100% prepayment.

Remote Stock — items available at our partners’ remote warehouses are supplied within an average of 30–45 business days after receiving 100% prepayment.

Pre-Order — made-to-order products are manufactured and delivered within an average of 45–60 business days. Payment terms: 50% advance payment to start production, with the remaining 50% paid before dispatch from the Dubai warehouse after full readiness for shipment.

Returns & Changes (Restocking Fee)
For selected items, a RESTOCKING FEE of 10% may apply in case of return, order cancellation, or changes to the order specifications. This condition applies only to certain products and is confirmed at the order approval stage.

Warranty
All products are covered by a standard 6-month warranty.
Extended warranty is available upon request and is agreed individually; it may affect the final product price.