Asc Engineered Solutions D.BU Pipe Union 1/2 in 150 Lb

Product Description

The ASC Engineered Solutions D.BU is a 1/2-inch malleable iron pipe union rated at 150 lb, finished in black and fitted with a brass-to-iron seat configuration. This union allows piping sections to be joined and disconnected without rotating the pipe itself, making it a standard fitting in gas, air, and general-purpose fluid systems. The brass seat provides a reliable metal-to-metal seal against the iron seat, resisting leak paths under normal service pressure. Plumbers, pipefitters, and mechanical contractors install this fitting in threaded pipe assemblies where future serviceability is required.

This union is used in residential and light commercial plumbing and mechanical systems, including natural gas distribution, compressed air lines, steam lines, and hydronic heating applications. The 1/2-inch size is common in branch lines and equipment connections where threaded malleable iron fittings are specified. Domestic manufacture supports project specifications requiring USA-made materials. The black finish is standard for gas piping applications and non-potable systems.

Key Features

• 1/2-inch threaded end connections for standard NPT piping
• 150 lb pressure rating suitable for general-purpose service
• Brass-to-iron seat design provides a durable metal-to-metal seal
• Malleable iron body offers impact resistance and machinability over cast iron
• Black finish standard for gas and non-potable piping systems
• Domestically manufactured to support project material specifications

Compatibility

Designed as an OEM-style replacement and standard stocking fitting for 1/2-inch NPT threaded malleable iron piping systems rated at 150 lb service class.

Installation Notes

Installation is performed by licensed plumbers or pipefitters in accordance with applicable mechanical and plumbing codes, including IFGC and IPC requirements. Shut off and depressurize the line before disassembly or installation. Apply thread sealant or PTFE tape rated for the intended service medium to all male NPT threads. Hand-tighten the union nut first, then torque to snug using a pipe wrench, taking care not to overtighten and crack the fitting body.

Technical Specifications

• Pipe Size: 1/2 inch
• Pressure Rating: 150 lb
• Body Material: Malleable Iron
• Seat Configuration: Brass x Iron Seat
• Finish: Black
• Origin: Domestic

Standard Information

• Brand: ASC Engineered Solutions
• Manufacturer Part Number: D.BU