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LockNFlate XL Locking Air Chucks for Large Bore Tire Valves (Open Flow & Closed Flow – LNL65021-BSPT & LNL65022-BSPT)

Heavy-duty LockNFlate® XL tire chucks designed for large bore (VG12/12V1) Schrader-type valves on big equipment. These right-angle locking air chucks feature a ~4″ extended nose for deep wheel recesses and six hardened steel jaws that lock onto “big bore” valve stems. Two models are offered – an Open-Flow and a Closed-Flow version – both with 1/4″ BSPT threaded inlets for compatibility with regional air hose standards (functionally identical to the 1/4″ NPT U.S. models). Once clamped on, the chuck creates a secure, leak-free connection and allows hands-free, high-volume tire inflation up to 250 PSI.

  • Purpose
    • Designed for inflating large off‑road, industrial, and agricultural tires
    • Built specifically for large bore VG12 / 12V1 tire valves
  • Typical Equipment
    • Mining equipment (haul trucks, loaders)
    • Heavy construction machinery
    • Large agricultural tractors and combines
    • Industrial vehicles with oversized tire valves
  • Valve Compatibility
    • Oversized “large bore” valve stems (VG12 / 12V1)
    • Standard automotive air chucks will not fit these valves
    • Expanded collet grips large‑diameter valve stems securely
  • Access Advantages
    • Right‑angle design improves access to recessed or shielded valve stems
    • Ideal for:
      • Inner wheels of dual truck tires
      • Rims with small access cutouts
      • Deep or obstructed valve locations
  • Safety & Convenience
    • Six steel jaws lock onto the valve stem
    • Hands‑free, leak‑free inflation
    • Allows operator to step back during inflation of high‑pressure, high‑volume tires
  • Performance
    • Rated to 250 PSI maximum
    • High airflow capacity for faster inflation of large tires
  • Model Selection
    • Open‑Flow (LNL65021)
      • For inline inflator gauges or foot‑pedal controlled air lines
      • Continuous airflow; upstream device controls air
    • Closed‑Flow (LNL65022)
      • For direct connection to air hoses or compressor outlets
      • Remains closed until locked onto a valve
      • Ideal for multi‑tire inflation systems and direct tank hoses
  • Summary
    • Brings LockNFlate’s “locks on, stays on, won’t leak” performance to large bore valves
    • Enables safer, faster, and more controlled inflation of massive tires