4 Mile Fueling provides Aircraft load-rated, one-hand-lift covers paired with preformed pit bodies for fuel hydrants, high-point vents, isolation valves, low-point drains, and other utility applications.
The design is simple by intention. Operators can switch between Lay Flat and Non-Lay Flat configurations in the field without any special tools or equipment. Moving the pins to the lower eye bolt holes sets the cover for Lay Flat operation, while the upper holes set it for Non-Lay Flat. The same hinge works across Hydrant, Low Point, and High Point pits, so one solution covers your entire fueling system.
4MF Fuel Pit Assemblies provide reliable access to underground fueling valves and equipment in aircraft fueling systems. Built for aircraft load-rated environments, they support efficient and safe airfield fueling operations day in and day out.
4 Mile Fueling provides Aircraft load-rated, one-hand-lift covers paired with preformed pit bodies for fuel hydrants, high-point vents, isolation valves, low-point drains, and other utility applications.
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4MF designs American-engineered fuel pit covers and assemblies built for the changing demands of aircraft fueling systems. From lay-flat cover requirements to replaceable stainless steel flanges and configurable pit assemblies, our products help teams reduce field labor, limit downtime, and keep critical fueling infrastructure moving.
Our patent-pending adjustable hinge technology allows compatible covers to shift between lay-flat and non-lay-flat configurations without special tools or equipment. It is a simpler, more robust, adaptable path forward for airport operators, designers, and fuel consortiums preparing for the next generation of airfield fueling standards.
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American-made quality meets industry-leading innovation.
Manufactured in the USA to support projects with domestic sourcing requirements.
Designed to meet Airlines for America lay-flat hydrant pit cover standards.
Built to adapt to existing infrastructure and eliminate unnecessary replacement costs.
One-hand lift compliant and engineered for high traffic airport environments.
Airlines for America ATA 103 updates are driving the move toward lay-flat hydrant pit covers by 2027. 4MF helps teams plan for that shift with retrofit-ready cover assemblies designed for existing fueling infrastructure. Our patent pending adjustable hinge technology allows compatible covers to be set for lay-flat or non-lay-flat use without special tools or equipment.
Compliant with ATA 103 Lay-Flat Requirements
Adjustable to Non-Lay-Flat Configurations
Aircraft Load Rated
One-Hand Lift Compliant
Retrofit-Ready for Existing Installations
From demo covers to multi-gate lay-flat retrofit programs, 4MF helps teams solve real fueling access challenges without overcomplicating the project.
Upgrade hydrant pit covers for changing lay-flat requirements while working with existing infrastructure whenever possible.
Test fit and function before moving into a larger order or multi-gate retrofit program.
Address damaged or aging fueling access points with retrofit-ready components built for field demanding conditions.
Send pit details, photos, drawings, or airport requirements and get practical guidance from quote through install.
Find quick answers about retrofit options, lay-flat requirements, demo covers, and technical support.
No. Most existing installations can be retrofitted without major modifications.
The hinge pin location determines the opening angle — simply move the pins to change configurations.
No. The conversion process uses standard components and takes minutes to complete.
Still have questions? We're here to help with specs, orders, or anything else. Reach out to our team at sales@4milefueling.com.
Built with durable materials and precision engineering, 4MF products are designed to adapt as fueling standards evolve. Retrofit-ready components and field-adjustable configurations help teams extend the life of existing infrastructure while keeping critical fueling operations moving.
