683 - CGA-350 Brass Inlet Nipple with Soft Tip - 2.5 Inch

Precision Brass Inlet Nipple for CGA-350 Service

The Western Enterprises WES683 is a specialized inlet nipple designed for compressed gas systems utilizing the CGA-350 standard. This component is critical for establishing secure connections between gas cylinders, regulators, and manifolds. Manufactured from high-grade brass, the nipple offers excellent mechanical strength and resistance to corrosion, which is essential for maintaining the integrity of gas delivery systems over long service lives. The unit features a length of 2.5 inches, providing standard spacing and clearance required for most industrial regulator configurations.

Soft Tip Technology for Enhanced Sealing

A distinguishing feature of the WES683 is its "Soft Tip" design. Unlike standard metal-to-metal seals that rely solely on high torque and perfect surface mating to prevent leaks, the soft tip incorporates a design element intended to improve the sealing capability at the interface. This is particularly important in high-pressure gas applications where even microscopic imperfections in the mating seat can lead to gas loss or hazardous leaks. The soft tip ensures a positive seal with less torque required on the nut, preserving the threads and the lifespan of the assembly.

CGA-350 Compatibility and Safety

This inlet nipple is machined to strict tolerances to fit CGA-350 connections. The CGA-350 standard is designated for flammable gases such as Hydrogen, Methane, Natural Gas, Carbon Monoxide, and Ethylene. It utilizes a left-hand thread (0.825"-14 NGO-LH-EXT) to prevent accidental cross-connection with non-compatible gas lines, such as those for oxygen or inert gases. Users must ensure that this nipple is only used with the appropriate gas service to maintain safety compliance. The WES683 is an essential component for MRO professionals maintaining gas distribution equipment in industrial, laboratory, and welding environments.

Installation and Maintenance

Designed for ease of installation, the WES683 fits standard CGA-350 nuts (sold separately). It is commonly used when replacing damaged or worn nipples on existing regulators or when fabricating custom pigtails and manifold headers. Proper installation requires inspecting the mating surfaces for debris and ensuring the nut is tightened to the manufacturer's specified torque settings. Regular inspection of the nipple tip is recommended during cylinder changes to ensure the sealing surface remains intact and free from deep scratches or deformation.