E99-350C43 - CGA 350 Stainless Steel Nipple Tailpiece

Premium Stainless Steel Gas Connection Component

The Miller E99-350C43 is a specialized stainless steel tailpiece designed for use with CGA 350 gas connections. In the realm of industrial gas management, the integrity of every connection point is paramount, particularly when dealing with the specific gases assigned to the CGA 350 standard, such as Hydrogen, Methane, and Carbon Monoxide. This component serves as the critical interface between the gas supply—typically a cylinder valve or manifold outlet—and the regulator or high-pressure hose. Unlike standard brass fittings, this tailpiece is manufactured from high-grade stainless steel, offering distinct advantages in terms of material compatibility and longevity.

Stainless steel construction is essential for applications requiring high purity or where the operating environment may be corrosive. While brass is suitable for many inert gases, stainless steel prevents contamination and resists the chemical degradation that can occur over time with certain reactive gases or in harsh industrial atmospheres. The E99-350C43 is precision-machined to ensure a perfect mating surface with the corresponding CGA 350 outlet. This precision is crucial for maintaining a gas-tight seal, thereby preventing hazardous leaks of flammable gases like Hydrogen. The tailpiece is designed to slide into a CGA 350 nut (sold separately) and be tightened onto the valve, creating a metal-to-metal seal or compressing a washer depending on the specific assembly requirements of the CGA standard.

For maintenance and repair operations (MRO), using genuine OEM parts like this Miller tailpiece ensures compliance with safety standards and equipment specifications. Generic fittings may lack the exacting tolerances required for high-pressure gas service, leading to potential safety risks. This component is compatible with Miller gas equipment and other standard CGA 350 apparatus, making it a versatile addition to any inventory of gas regulation spare parts. Whether setting up a new laboratory gas line, repairing a welding station, or maintaining a manifold system, the Miller E99-350C43 provides the reliability and material strength demanded by professional gas technicians.