ECNG-20-2

ECNG-20-2 hermetic pump for aircraft fluid systems

The ECNG-20-2 is an aircraft electric centrifugal hermetic pump designed for pumping fuel and other working fluids in aviation systems. The unit is built for operation where leakage control and safe fluid transfer are important. Its hermetic construction separates the pumped medium from the electric drive area, which is especially valuable when handling aviation fuel and other liquids that must not leak into equipment compartments. In aircraft use, the ECNG-20-2 is treated as a compact high-flow pump for fuel or special fluid circuits.

Fuel transfer function of the ECNG-20-2

The main task of the ECNG-20-2 is to move fuel through the system at a high flow rate. Depending on the installation, it can be used for fuel transfer, circulation, feed support or pumping through a dedicated aircraft system line. The pump is suitable for systems where a stable flow is required and where the design must reduce the risk of external leakage. In service, the actual operating point depends on the line resistance, filters, valves, fittings, installation position and condition of the connected fuel system.

ECNG-20-2 with hermetic magnetic coupling

A key design feature of the ECNG-20-2 is the hermetic drive arrangement with a magnetic coupling. The pumped medium is isolated from the motor side, while torque is transmitted without a conventional shaft seal passing through the fluid boundary. This design helps reduce leakage risk and improves operational safety when working with flammable aviation fuel. For maintenance, the magnetic coupling and hermetic separation are important points: the unit should be checked not only for electrical performance, but also for integrity of the sealed section and smooth mechanical operation.

ECNG-20-2 and ETM-103 electromagnetic clutch

The ECNG-20-2 is associated with an ETM-103 series electromagnetic clutch. This unit is part of the drive and control arrangement of the pump assembly, depending on the exact execution. Correct operation of the clutch is important for reliable pump engagement and stable rotation. If the pump does not reach the required flow or speed, the cause may be related to motor supply, clutch condition, internal mechanical resistance, bearing condition, line blockage or incorrect installation. For this reason, testing should cover the complete pump assembly rather than only the motor terminals.

Working fluids for the ECNG-20-2 pump

The main working medium for ECNG-20-2 is aviation fuel. In technical descriptions, the pump may also be listed for water and certain neutral or aggressive liquid chemicals, depending on execution and material compatibility. For aviation supply, fuel-system compatibility should be treated as the primary reference unless the equipment documentation clearly confirms use with another liquid. When the pump is ordered for a non-fuel application, the working medium must be specified in advance to avoid material incompatibility, seal damage or incorrect performance.

Application of ECNG-20-2 on aircraft

The ECNG-20-2 is used in aircraft fuel and special fluid systems depending on the aircraft configuration. It is associated with applications on aircraft such as Tu-22M3 and Il-76MD-90A, subject to the exact equipment list and system documentation. Since hermetic electric centrifugal pumps can be installed in different roles, the designation alone is not enough to confirm installation. The aircraft parts catalog, maintenance manual and system diagram should be checked before replacement or procurement.

Inspection and supply of ECNG-20-2

For procurement, the full designation ECNG-20-2 should be used. The pump may be supplied new, from storage, repaired, overhauled or tested serviceable depending on availability. Before installation, it should be checked for housing condition, connector condition, rotation, signs of corrosion, integrity of the sealed section, clutch condition, inlet and outlet cleanliness and documentation. For aircraft use, passport, quality documents, repair records or bench-test data should be confirmed where available.

Product Type: Aircraft electric centrifugal hermetic pump
Designation: ECNG-20-2
Alternative Designation: ЭЦНГ-20-2
Function: Pumping, transfer and circulation of fuel or approved working fluid
Application / Where Used: Aircraft fuel systems and special fluid systems
System / Installation Area: Fuel transfer, fuel circulation or dedicated fluid pumping lines depending on configuration
Working Medium: Aviation fuel
Other Possible Media: Water, neutral liquids and selected aggressive liquid chemicals depending on material compatibility and documentation
Pump Type: Electric centrifugal pump
Design: Hermetic pump with magnetic coupling
Associated Clutch: ETM-103 series electromagnetic clutch
Power Supply Type: Three-phase AC
Voltage: 200 V
Frequency: 400 Hz
Flow Rate: 20,000 / 30,000 L/h depending on operating point
Nominal Flow Rate: 30 m³/h / 30,000 L/h
Pressure Drop / Head: 0.84 / 0.23 kgf/cm² depending on flow point
Reference Pressure: 0.25 kgf/cm²
Rotational Speed: 5400 rpm
Current Consumption: Up to 7.5 A
Dimensions: 255 × 245 × 198 mm
Weight: 6.5 kg
Compatible Aircraft / Equipment: Tu-22M3, Il-76MD-90A and other aircraft depending on system configuration
Design Feature: Sealed fluid section with magnetic drive coupling to reduce leakage risk
Condition: As applicable
Technical Documentation: Product passport, bench-test documentation and aircraft system maintenance documentation as applicable

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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.