Western Enterprises 662P Regulator Inlet Nut CGA-540

Product Description

The WESTERN ENTERPRISES 662P is a plastic regulator inlet nut designed for oxygen service, conforming to the CGA-540 connection standard. This inlet nut threads onto the inlet of an oxygen regulator, creating a secure seal between the regulator and the cylinder valve. It is a small but critical fitting used in gas distribution and welding systems where proper cylinder-to-regulator connection is required. Welders, industrial gas technicians, and medical gas service professionals rely on this type of fitting to maintain safe, leak-free oxygen connections at the regulator inlet. The plastic construction keeps the part lightweight at 0.1 pounds.

This inlet nut is used wherever CGA-540 oxygen regulators connect to high-pressure oxygen cylinders. Typical applications include welding and cutting operations, industrial gas supply systems, and other settings where oxygen cylinders with CGA-540 valve outlets are in service. The fitting is sold individually and is suitable as a replacement or spare for service kits. It is well suited for technicians who maintain regulator assemblies in the field or shop.

Key Features

• CGA-540 connection standard for oxygen cylinder service
• Plastic construction reduces weight and resists corrosion in dry oxygen service
• Lightweight at 0.1 pounds for easy handling and portability
• Sold as an individual unit, suitable for replacement or spare parts inventory
• Compatible with standard CGA-540 oxygen regulator inlets

Compatibility

Designed as an OEM-style replacement inlet nut for oxygen regulators using the CGA-540 connection standard.

Installation Notes

Installation should be performed by a qualified gas technician familiar with high-pressure oxygen systems. Always close the cylinder valve and bleed the regulator completely before removing or replacing the inlet nut. Avoid using thread sealants, lubricants, or grease on oxygen fittings, as these materials pose a serious fire and explosion hazard in oxygen service. Follow applicable compressed gas safety codes and the regulator manufacturer guidelines when servicing cylinder connections.

Technical Specifications

• Connection Standard: CGA-540
• Gas Service: Oxygen
• Material: Plastic
• Weight: 0.1 pounds
• Unit of Measure: Each

Standard Information

• Brand: WESTERN ENTERPRISES
• Manufacturer Part Number: 662P