Lincoln Electric 81606 Straight Swivel Adapter Feed Line

Product Description

The LINCOLN ELECTRIC 81606 is a straight swivel adapter designed for welding feed line applications. It connects a 1/8 inches NPTF female port to a 1/8 inches NPTF male port, allowing the line to rotate without twisting or binding. The swivel function reduces stress on feed line connections during operation, extending service life. This adapter is installed by welding technicians and maintenance professionals working on wire feed systems where line management and thread integrity are critical.

This adapter is suited for use in wire feed welding setups where straight-line routing is required between gas or feed line components. The NPTF thread form provides a pressure-tight mechanical seal without relying solely on sealant, making it appropriate for regulated gas delivery circuits in both shop and field environments.

Key Features

• Straight swivel design allows rotation without line twist or binding
• 1/8 inches NPTF female inlet threads for secure, leak-resistant connection
• 1/8 inches NPTF male outlet threads for direct in-line installation
• NPTF thread form creates a pressure-tight mechanical seal
• Compact adapter profile suited for tight feed line routing

Compatibility

Designed as an OEM-style replacement adapter for welding feed line systems using 1/8 inches NPTF threaded connections.

Installation Notes

Installation should be performed by a qualified welding technician or maintenance professional. Shut off all gas supply and relieve line pressure before disconnecting or installing any feed line fitting. NPTF threads are designed to seal mechanically, but inspect threads for damage before assembly. Use appropriate hand tools and avoid over-tightening, which can damage the thread form or the swivel mechanism.

Technical Specifications

• Fitting Type: Adapter
• Connection (Female): 1/8 inches NPTF
• Connection (Male): 1/8 inches NPTF
• Configuration: Straight Swivel

Standard Information

• Brand: LINCOLN ELECTRIC
• Manufacturer Part Number: 81606