03Z72 - ESAB 3/16 Inch Hose Nipple for B-Size Fittings

Precision Brass Nipple for 3/16-Inch Oxy-Fuel Hoses

The ESAB 03Z72 is a specialized hose nipple engineered for the assembly and repair of industrial oxy-fuel welding hoses. Designed specifically to interface with 3/16-inch inner diameter (ID) hoses, this component is a critical element in establishing a secure, leak-proof gas delivery system. The nipple features a precision-machined barbed end that inserts into the hose lumen, providing the necessary friction and structural integrity to withstand the pressures associated with oxygen and fuel gases when properly crimped or clamped.

Manufactured from high-quality brass, this nipple offers excellent resistance to corrosion and deformation, ensuring a long service life even in demanding workshop environments. The "B-Size" designation indicates its compatibility with standard B-size coupling nuts (CGA 022 for oxygen and CGA 023 for fuel gases), which utilize a 5/8"-18 thread. This standardization allows the 03Z72 to be used universally across a wide range of regulators, torches, and hose extenders that adhere to Compressed Gas Association (CGA) specifications.

In professional gas distribution setups, the integrity of the hose connection is paramount. A mismatched nipple can lead to gas leaks, pressure drops, or catastrophic hose detachment. The ESAB 03Z72 is dimensionally calibrated to ensure optimal gas flow for 3/16" hoses without inducing turbulence or restriction. It serves as the mating surface for the spherical or conical seat within the regulator or torch fitting, creating a metal-to-metal seal that is tightened via the coupling nut. Whether fabricating custom hose lengths or repairing damaged ends in the field, this nipple provides the reliability required for safe hot work operations.

Technicians should verify that the hose ID matches the 3/16" specification of this nipple. Using this nipple with a 1/4" hose would result in a loose fit that cannot be safely crimped, while forcing it into a 1/8" hose could compromise the hose liner. Proper installation requires a compatible ferrule or hose clamp to secure the hose material over the barbs, preventing pullback under pressure.