ZL 2019 2 1774935.X
Horizontal Filter Separator
Granted: 2019
Horizontal filter separator with coalescing and separation cartridges. Bottom settling chamber with valve and strainer intercepts impurities and recovers fuel.
Innovation & Quality Assurance
Sustained R&D investment building a moat in aviation fueling.
Granted Patents
ZL 2019 2 1779806.X
Filter Separator
Granted: 2019
Compact horizontal filter separator with low center of gravity. Horizontally arranged cartridges allow easy cover-open maintenance and convenient vehicle transport.
ZL 2019 2 1779808.9
Filter Separation Device
Granted: 2019
Horizontal filter separator with suspended pull rods supporting cartridges. Operational vibrations shake off surface impurities, extending cartridge service life.
ZL 2019 1 1376562.5
Vent Valve
Granted: 2019
Vent valve with float-controlled airflow. Float seals the path at high liquid levels; a heavy ball blocks airflow automatically upon tank vehicle overturn.
ZL 2019 2 2399720.0
Vent Valve
Granted: 2019
Vent valve with float-controlled airflow. Float seals the path at high liquid levels; a heavy ball triggers automatic airflow shutoff upon tank vehicle overturn.
ZL 2020 2 1884529.1
Pressure Controller
Granted: 2020
Venturi fuel pressure controller. Adjusting the orifice cross-section alters flow to precisely control aircraft fuel tank inlet pressure via the Venturi effect.
ZL 2020 2 2163812.1
3-Way 2-Position Solenoid Directional Valve
Granted: 2020
Two-position three-way magnetic directional valve with quick exhaust valve, ensuring rapid air release and timely response of fuel loading bottom valves.
ZL 2020 2 2164015.5
Liquid Level Control Valve
Granted: 2020
Dual-function liquid level control valve for both high and low levels. Spring clips inserted into different sockets allow adjustable liquid level height control.
ZL 2020 2 2166009.3
High-Level Control Valve with Test Function
Granted: 2020
High-level control valve with test unit. Air pressure simulates float buoyancy to verify valve performance, enabling on-site diagnostics without disassembly.
ZL 2020 1 1038290.0
High-Level Control Valve with Test Function
Granted: 2020
High-level control valve with test unit. A plunger driven by air pressure simulates float buoyancy for on-site performance verification without disassembly.
ZL 2021 2 0019031.7
Auto-Reset Valve
Granted: 2021
Auto-reset valve. Pulling the rod opens the inlet and connects the work port when pressurized. Spring force automatically closes the inlet when air pressure drops.
ZL 2021 2 0026597.2
Composite Auto-Reset Valve
Granted: 2021
Multi-unit auto-reset valve assembly. Inlets interconnect or isolate independently, reducing footprint and test time for multi-tank level valve performance checks.
ZL 2021 1 0007177.4
Auto-Reset Valve
Granted: 2021
Auto-reset valve for level valve testing. Air pressure keeps the inlet open; spring force drives the seal plug to auto-close when pressure drops or disappears.
ZL 2021 2 0189276.4
Online Maintenance Ball Valve
Granted: 2021
Online-maintainable ball valve. Integrally cast mounting tube ensures coaxiality; valve stem inserts from above, enabling in-line repair without pipeline removal.
ZL 2021 2 0189277.9
Elastic Seal Ball Valve
Granted: 2021
Elastic-seal ball valve. Disc springs drive the seal seat against the ball core, providing both axial and radial compensation for automatic sealing after wear.
ZL 2021 2 0192541.4
Ball Valve
Granted: 2021
Ball valve with liners fixing ball core position on both sides, enabling easy stem alignment and simplified assembly while ensuring flexible and reliable operation.
ZL 2021 2 0216735.3
Multi-Stage Plunger Cylinder
Granted: 2021
Multi-stage plunger cylinder. A flow restrictor in the secondary gap eliminates jerking at the stage-switching point, improving operational stability and safety.
ZL 2021 3 0254856.2
Pneumatically Controlled Ball Valve
Granted: 2021
Pneumatic control ball valve for fuel systems. Appearance design patent emphasizing overall shape, used to control fuel flow and shutoff in oil handling equipment.
ZL 2023 1 1180193.9
Pipeline Stop Valve
Granted: 2023
Pipeline shutoff valve. Diaphragm between core and seat flips to seal without friction; pneumatic actuation ensures rapid response in a compact inline body.