Margo welding coupling MUFA SP 15 DN 15 1/2 inch

The Margo welding coupling MUFA SP 15 DN 15 (1/2 inch) is a steel in-line coupling designed to create permanent metal-to-metal joints by welding. Intended for use with steel piping systems, this DN 15 coupling provides a welded connection for fluid or gas lines where a branch, repair or extension is required. The coupling's design supports installation in domestic and light industrial environments and is suitable for common maintenance and pipeline modification tasks.

Advantages

The welding coupling offers a robust, leak-resistant joint once welded, eliminating the need for threaded or mechanical fittings that can loosen over time. Made of steel, it provides high mechanical strength and compatibility with standard steel pipe of the same nominal diameter. The in-line configuration allows straightforward integration into existing runs of pipe with minimal added length, and the permanent welded connection ensures long-term reliability under typical service conditions.

Suitable for

• Welding permanent branches and repairs on steel pipelines
• Connecting 1/2 inch (DN 15) steel pipes in fluid and gas systems
• Maintenance and modification of domestic plumbing and light industrial piping
• Applications where a sealed, structural weld joint is required

Key specifications

• Nominal diameter: DN 15 (1/2 inch)
• Material: steel suitable for welding
• Type: in-line welding coupling (butt/weld connection)
• Application: fluid and gas transport pipelines
• Connection method: welded permanent joint

How to use

Prepare the pipe ends by cleaning and aligning them to ensure proper fit-up with the coupling. Position the coupling on the pipe run at the required location and tack-weld to maintain alignment if necessary. Perform full circumferential welds according to applicable welding procedures and standards for the pipe material and service conditions. After welding, inspect the welds visually and with nondestructive testing methods as required for the system (e.g., dye penetrant, radiographic, or ultrasonic testing) and apply any necessary protective coatings or corrosion protection measures.

Usage recommendations

Ensure welding is performed by qualified personnel following relevant codes and safety practices. Verify compatibility of base materials and welding consumables, and follow pressure testing procedures after installation before placing the pipeline into service.