GA-163T/16

GA-163T/16 valve in aircraft hydraulic systems

The GA-163T/16 is a three-position electromagnetic hydraulic valve used in aircraft hydraulic systems. It is designed to route hydraulic fluid to the required line by electrical command. The valve does not create pressure and does not work as a pump. Its role is to switch the hydraulic flow between working positions or close the passage when the system is in neutral. In technical listings, GA-163T/16 is described as a three-position electromagnetic valve with two distributing valves.

Hydraulic flow switching through GA-163T/16

In operation, GA-163T/16 directs AMG-10 hydraulic fluid to the selected actuator line. When voltage is applied to the corresponding electromagnet, the spool shifts and connects the required hydraulic passage. In the neutral position, the valve can block the flow according to the system layout. This makes the unit suitable for systems where the same hydraulic consumer needs two working directions, such as extension and retraction, or left and right movement in a steering mechanism.

GA-163T/16 in steering and spoiler control circuits

The GA-163T/16 is used in circuits that require remote hydraulic control of actuators. Open technical references mention its use in the wheel steering system and in the Yak-42 spoiler control system, where the valve supplies pressure to spoiler extension and retraction cylinders. Similar hydraulic logic can also be used in special equipment and other aircraft installations. If an actuator does not move correctly, the valve is only one part of the check. The fault may also be in pressure supply, wiring, the connected cylinder, return line, or contamination of the fluid.

Aircraft application of hydraulic valve GA-163T/16

The valve is found in aviation hydraulic systems, including references for Yak-42, An-26, Ka-32 and special equipment installations. Some sources list GA-163A/16 as an analogous or related modification. Exact applicability should be checked by the aircraft parts catalog, because hydraulic systems may differ by aircraft type, version, and modification standard. A visually similar valve from the GA-163 family should not be selected without checking the full designation and installation documentation.

Identification and ordering checks for GA-163T/16

Before ordering, the marking on the installed valve should be compared with the technical description, parts catalog, or operating documentation. The product may appear in documents as GA-163T/16, GA163T/16, or in Russian documentation as ГА-163Т/16. For a clear request, it is useful to provide the aircraft type, system location, full designation, and a photo of the marking if available. The product is also known under alternative designation ГА-163Т/16.

Product Type: Three-position electromagnetic hydraulic valve
Function: Remote switching of hydraulic fluid flow
Application / Where Used: Aircraft hydraulic systems and special equipment
System / Installation Area: Wheel steering, spoiler control, actuator hydraulic circuits
Compatible Aircraft / Equipment: Yak-42, An-26, Ka-32 and other systems where GA-163T/16 is specified
Working Medium: AMG-10 hydraulic oil
Nominal Operating Pressure: 21–22 MPa
Maximum Operating Pressure: Up to 25 MPa
Nominal Flow Rate: Approx. 12–16 L/min
Operating Voltage: 27 V DC ± 10 %
Current Consumption: Not more than 1.2 A at 27 V and +20 °C
Response Time: Not more than 0.1 s
Operating Temperature Range: −60 to +60 °C
Short-Term Temperature Limit: Up to +80 °C
Housing Material: Aluminum alloy
Connection Type: Pipeline fittings, configuration depends on installation
Design Features: Three-position valve with two distributing valves and electromagnetic spool control
Related Variant: GA-163A/16
Technical Documentation: GA-163T/16 technical description and aircraft maintenance documentation

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