E99-320C44 - Miller Stainless Steel Inlet Nut, CGA 320 for CO2

Premium Stainless Steel Gas Connection Hardware

The Miller E99-320C44 is a high-grade stainless steel inlet nut designed for CGA 320 connections, primarily used for Carbon Dioxide (CO2) gas service. In the realm of industrial gas distribution and welding support, the integrity of every connection point is paramount. This component is manufactured to meet the rigorous standards of Miller Electric and Smith Equipment, ensuring that your gas regulation systems operate safely and efficiently. Unlike standard brass fittings, the stainless steel construction of this nut provides enhanced resistance to corrosion and mechanical wear, making it an excellent choice for harsh industrial environments or applications where equipment longevity is a critical concern.

The CGA 320 standard is the designated connection for Carbon Dioxide cylinders in the United States and Canada. This nut features the specific thread pitch and diameter required to mate securely with CGA 320 cylinder valves and corresponding regulator nipples. Precision machining ensures that the threads engage smoothly without binding, allowing for a secure torque that creates a leak-proof seal. This is essential for maintaining system pressure, preventing the waste of expensive shielding gas, and ensuring the safety of personnel by eliminating potential leak points. Whether used in beverage dispensing, industrial welding, or laboratory applications, this nut delivers reliable performance.

As a genuine OEM part, the E99-320C44 guarantees compatibility with Miller and Smith regulators that utilize a detachable inlet connection. Using non-OEM or generic fittings can sometimes lead to tolerance mismatches, resulting in gas leaks or damage to the regulator body. By choosing this authentic Miller component, maintenance personnel and technicians can be confident in the fit and function of the replacement part. It is designed to withstand the torque required for a tight seal while resisting the deformation that can occur with softer metals over repeated cylinder changeouts.

Installation of this nut should always be performed by qualified personnel familiar with compressed gas safety procedures. It is designed to be used in conjunction with a matching tailpiece or nipple (sold separately) to complete the connection between the cylinder valve and the regulator or manifold. The stainless steel finish not only provides durability but also offers a clean, professional appearance that resists tarnishing and oxidation over time.