AN8-ORB8 Fuel Shut-Off Valve — Compact Control Valve for AN-8 Fuel Lines

When you need a dependable shut-off valve at a specific point in an AN-8 fuel system, this assembly delivers it. The AN8-ORB8 fuel shut-off valve is a compact on/off control valve designed for fuel lines using AN-8 fittings and ORB8 port connections. The valve body is CNC-machined from aluminum billet with a black anodized finish — corrosion-resistant, lightweight, and visually clean in a performance engine bay. A lever handle with a securing screw provides positive open/close operation, and the white FLOW arrow on the valve face makes installation direction unmistakable. The valve ships complete: valve body, two AN8-ORB8 aluminum fittings, and sealing O-rings — no additional components needed to connect directly into a standard AN-8 fuel line.

Key Features

CNC-Machined Aluminum Valve Body

The valve body is precision-machined from aluminum, delivering structural integrity for fuel system pressures without the weight of steel. The black anodized surface resists corrosion and fuel vapor exposure through the thermal cycling typical of an active engine bay. For a control valve installed in a fuel line, consistent machined geometry at the O-ring seating surfaces is the direct foundation for repeatable sealing at both connections.

Lever Handle with Securing Screw

A 90-degree lever throw moves the valve from fully open to fully closed. The securing screw locks the handle in position — important in high-vibration environments where an unlocked handle can migrate to an intermediate position over time. If you are installing this shut-off valve for maintenance access, the securing screw keeps the valve set between operations without drift.

FLOW Direction Marking

The white FLOW arrow on the valve body indicates the correct installation direction for fuel flow. Installing a directional valve backwards is a common engine bay mistake that may not appear immediately but can cause sealing and flow issues under operating conditions. The FLOW marking removes that ambiguity: align the arrow with the direction of fuel travel and the valve is correctly oriented.

Dual Sealing O-Rings

O-rings on both sides of the valve body create the primary leak seal between each AN8-ORB8 fitting and the valve. In fuel applications, sealing margin is smaller than most assume — a fitting torqued onto a properly seated O-ring holds; one installed with a misaligned O-ring can seep under pressure. Seat both O-rings before tightening, then verify both connection points after pressurization. If your system uses high ethanol content or specialty fuel additives, verify O-ring material compatibility with your specific fluid before installation.

Complete Assembly — Valve, Fittings and O-Rings Included

The valve body, two AN8-ORB8 aluminum fittings (flared end, threaded section), and two sealing O-rings are supplied as one kit. For tuner shops and distributors, this format eliminates the risk of a missing fitting mid-installation and simplifies stocking as a single SKU.

Kit Contents

Applications

Fuel System Manual Shut-Off

The primary application is a manual shut-off valve in an AN-8 fuel line — for maintenance access, pre-service fuel isolation, or emergency cut-off in a performance build. The valve connects directly to AN-8 lines with ORB8 ports without adapters. The machined aluminum valve body, seated O-ring sealing, and lever handle with securing screw provide a reliable manual control valve for standard street fuel system conditions. For high-pressure or elevated-temperature applications, verify the valve's rated parameters before installation.

Performance Engine Bay Builds

In a performance build where AN-8 fuel lines are standard throughout, this shut-off valve integrates cleanly without adapter fittings. The black anodized finish matches AN-8 hardware visually, and the compact valve body fits the tight clearances of a modified engine bay. Performance builders need a control valve that maintains its sealing and handle position through repeated thermal cycles. The anodized aluminum valve body handles that environment for a manual on/off valve role.

Fluid Transfer Lines for Compatible Fluids

This valve can also serve as an on/off control valve on oil or coolant transfer lines — provided you verify O-ring material compatibility with your specific fluid before installation. Coolant formulations with specialty additive chemistries can interact differently with sealing compounds than standard blends. Check compatibility first when using this valve outside a standard fuel application.

Installation Notes

Most valve and fitting failures in fuel systems start at the connection points — not the middle of the line — where vibration and thermal movement concentrate stress. Follow this sequence for a reliable installation:

1. Orient the valve first. The FLOW arrow must point in the direction of fuel travel. Verify orientation before tightening anything — reversing a backwards valve after pressurization means disassembling both fittings.
2. Seat both O-rings before tightening. Place an O-ring between each AN8-ORB8 fitting and the valve body, fully seated in the groove. A rolled or misaligned O-ring will leak under fuel pressure.
3. Tighten to the correct torque for aluminum AN-8 fittings. Aluminum threads on the valve body and fittings can be damaged by over-tightening. Apply the standard recommended torque for AN-8 aluminum connections and stop there.
4. Operate the lever and check for leaks. Move the lever through full travel to confirm operation, then pressurize and inspect both connection points before service.

Quality, Packaging and OEM Service

The valve body and fittings are CNC-machined aluminum with a durable black anodized surface. Machined construction delivers consistent O-ring seat geometry — a direct factor in reliable sealing performance. The complete kit is packed together and shipped in an export carton with components bagged for protection. OEM and private-label programs available; contact directly for volume and custom configuration requirements.