The Haltec 753S-9 Large Bore Hand-Bendable Extension Valve is an industrial-grade, heavy-duty solution designed to extend the reach of standard heavy-duty large bore valves on large off-the-road (OTR), agricultural, and construction equipment tires. Measuring 9 inches in length, this specialized valve extension provides effortless inflation, pressure checks, and deflation for deep-seated or hard-to-reach inner dual wheels.
Crafted with a flexible inner core that can be custom-bent by hand to clear tight wheel configurations, the 753S-9 features a robust, multi-stage sealing system. It relies on a high-grade Teflon gasket to seal the face of the valve, paired with a heavy-duty 3/4" hex sealing nut that crushes a built-in lead seal directly into the valve threads. This dual-action mechanism prevents slow leaks and locks the extension securely in place against severe vibrations and rotational forces.

Key Specifications & Attributes

• Product Model: 753S-9 (753S9)
• Manufacturer: Haltec Corporation
• Component Type: Large Bore (LB) Hand-Bendable Extension
• Overall Length: 9 inches
• Sealing Hardware: Includes two heavy-duty lock nuts and one 3/4" hex sealing nut
• Internal Seals: High-performance Teflon face gasket and a thread-locking lead crush seal

Operational Notes & Features

• Hand-Bendable Design: Can be contoured by hand to achieve the perfect angle for easy air chuck access without distorting or restricting air flow.
• Dual-Seal Integrity: Engineered specifically for rugged off-the-road applications to eliminate air loss at the primary connection point.
• Core & Cap Requirement: Ships empty; requires the user to transfer the existing large bore valve core and cap to the outer tip of the extension upon installation.
• Rim Stabilization: For optimal performance and safety, the extension must be firmly anchored or bracketed to the wheel rim to prevent whip and structural fatigue during equipment operation.

• Specifications