Merit Brass SW3411HD-20 Pipe Half Coupling 1-1/4 in

Product Description

The MERIT BRASS SW3411HD-20 is a 304 stainless steel pipe half coupling designed for socket weld installations in high-pressure piping systems. Rated at 3,000 psi, this fitting provides a strong, full-penetration weld connection on one end, making it well suited for terminating pipe runs or connecting pipe to equipment flanges and valve bodies. The 304 stainless steel construction offers solid corrosion resistance in a wide range of fluid service applications. Licensed pipefitters and plumbers install this coupling in industrial, commercial, and process piping where code-compliant, permanent connections are required.

This half coupling is sized for 1-1/4 inch pipe and uses a socket weld end connection on both engaging faces. It is commonly found in process piping, steam service, hydraulic lines, and general industrial fluid systems where high working pressures and corrosion resistance are priorities. The 3,000 psi pressure rating makes it appropriate for Class 3000 socket weld fitting applications per ASME B16.11 standards, typical in refineries, plants, and commercial mechanical rooms.

Key Features

• 304 stainless steel construction for broad corrosion resistance in fluid and steam service
• 3,000 psi pressure rating suitable for Class 3000 high-pressure piping systems
• Socket weld end connection provides a permanent, full-penetration weld joint
• 1-1/4 inch fitting size for standard pipe terminations and branch connections
• Half coupling design allows pipe-to-equipment or pipe-end termination without a full coupling

Compatibility

Designed as an OEM-style Class 3000 socket weld half coupling for use with 1-1/4 inch pipe in industrial and commercial stainless steel piping systems.

Installation Notes

Installation should be performed by a licensed pipefitter or plumber in accordance with ASME B31.1, B31.3, or applicable local piping codes. The pipe end must be cut square, deburred, and inserted fully into the socket before welding. De-energize and depressurize the system completely before any cutting, fitting, or welding work begins. Verify filler metal compatibility with 304 stainless steel base material prior to welding.