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Legend Valve

Legend Valve 303-126 1" x 1-1/4" Brass Compression Coupling

SKU CH-526D-0AH5F

Brass compression coupling joins 1" and 1-1/4" tubing for air compressor lines

  • Brass construction resists corrosion for long service life
  • 1" to 1-1/4" compression coupling joins different pipe sizes
  • Legend Valve brand ensures reliable plumbing performance
  • New condition guarantees full factory specification compliance
  • California Prop 65 warning informs safe handling practices

Brass Compression Coupling for Air Systems

The Legend Valve 303-126 joins a one-inch tube to a one-and-a-quarter-inch tube using a brass compression mechanism. It is built for air compressor and vacuum pump lines where a secure, leak-resistant joint is required.

Brass Construction Withstands Daily Vibration

The all-brass body resists corrosion from moisture in compressed-air networks and tolerates the vibration common on workshop compressors. Compression nuts tighten by hand or wrench without soldering or threading, so the fitting can be installed or repositioned quickly during maintenance.

Ready to Install Without Extra Parts

No separate ferrules, sealant or adapters are supplied or needed; the coupling seals on the tube outer diameters as the nuts are tightened. The product carries a California Proposition 65 notice for chemicals linked to cancer and reproductive harm, so installers should follow standard handling precautions.

Highlights

  • Brass construction resists corrosion for long service life
  • 1" to 1-1/4" compression coupling joins different pipe sizes
  • Legend Valve brand ensures reliable plumbing performance
  • New condition guarantees full factory specification compliance
  • California Prop 65 warning informs safe handling practices

Specifications

BrandLEGEND VALVE

Questions about this item

What pipe sizes does the 1" x 1-1/4" brass compression coupling join?

The Legend Valve 303-126 connects a 1-inch outside-diameter tube to a 1-1/4-inch outside-diameter tube using compression fittings on both ends.

What tubing material and wall condition are required for a leak-free seal?

Clean, round copper, brass or aluminium tubing with a smooth, burr-free cut is needed so the ferrules can grip evenly on both the 1-inch and 1-1/4-inch sides.

Which tightening sequence prevents the most common leak on this coupling?

Hand-tighten both nuts first, then use two wrenches to turn each nut one-and-a-half full turns past hand-tight while holding the body steady so the ferrules seat squarely.

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