9103615 - Harris Oxygen Inlet Nut and Nipple Assembly CGA-540 x 1/2 MNPT

Technical Overview of the Harris Inlet Nut & Nipple Assembly

The Harris 9103615 is a specialized gas fitting assembly designed to facilitate the connection of compressed gas cylinders to distribution piping, manifolds, or regulators. This specific unit is engineered for Oxygen service, utilizing the industry-standard CGA-540 connection on the cylinder side. The assembly consists of a robust inlet nut and a precision-machined nipple, integrated to withstand the high pressures associated with industrial gas cylinders.

The nipple features a length of 2.5 inches, providing adequate clearance for wrench access and installation in varied manifold configurations. The outlet side of the nipple terminates in a 1/2" Male National Pipe Thread (MNPT). This tapered thread specification allows for a secure, pressure-tight seal when mated with corresponding female NPT fittings found on standard piping infrastructure or manifold blocks. The use of NPT threads ensures compatibility with a vast array of industrial plumbing and gas control components.

Material selection is critical in oxygen service to prevent ignition hazards and ensure longevity. This Harris assembly is constructed from high-quality brass, a material chosen for its non-sparking properties and resistance to deformation under torque. The seating surface of the CGA-540 nipple is designed to form a gas-tight metal-to-metal seal against the cylinder valve outlet, eliminating the need for washers in this specific connection type. Proper cleanliness standards for oxygen service are implied in the manufacturing of such components to prevent reaction with hydrocarbons.

Engineers and technicians utilizing this part can rely on its dimensional accuracy and adherence to Compressed Gas Association (CGA) standards. It serves as a critical link in gas management systems, ensuring that the high-pressure supply from the cylinder is safely and effectively transferred to the regulation or distribution stage. Whether used in a central gas system, a cluster manifold, or a custom regulator setup, the 9103615 offers the reliability expected from Harris products.