Bowes Dix-Lok N-Series CouplingBowes interchange hose couplings offer a safe and secure positive locking feature for pneumatic hose connections.  A quarter-turn and audible click allows for a fast reliable connection. A retractable sleeve on the male nipple prevents accidental disconnection under pressure, with no separate safety pin required.  Bowes interchange fittings, also known as Dix-Lock, N-Series, or MacDonald quick couplings, are interchangeable between sizes 1/2 through 1 inch, allowing for varying sizes of hose to be connected.  Pneumatically energized nitrile rubber seal allows for leak-proof performance and higher working pressure limitations. Optional safety-lock feature offers threaded backup ring that prevents the retractable sleeve from being released until it is manually retracted.

  • Mini Bowes series available for 3/8 inch size
  • Available in brass, plated steel, or 303 series stainless steel
  • Protective cap with chain available in brass or stainless steel
  • Available with hose barb, male or female NPT, BSPT, and double male or female unions

Always use Hose Safety Whip Checks on all air hose assemblies

See Also: Thor Style CouplingsUniversal /Chicago Couplings


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  • Per Section 1417 of the Safe Drinking Water Act (SDWA) use Lead free parts in all consumable water applications.  Lead free refers to the wetted surface of pipes, fittings and fixtures in potable water systems that have a weighted average lead content = 0.25%. Source: California Health & Safety Code (116875). Vermont Act 193*171NLF
    Please contact us for a limited assortment of lead-free products