Merit Brass XB187-08 Brass Pipe Union 1/2 in Fbspt Class 125

Product Description

The MERIT BRASS XB187-08 is a Class 125 brass pipe union designed for 1/2 inch threaded pipe systems. It features female British Standard Pipe Taper (FBSPT) connections on both ends, making it suitable for joining and later disconnecting sections of pipe without disturbing the surrounding system. This union is used in plumbing, HVAC hydronic lines, and light industrial piping where a removable, leak-tight connection point is required. The brass construction offers solid corrosion resistance for water and compatible fluid service. Installation is handled by licensed plumbers and pipefitters.

This union fits into residential and light commercial piping applications where 1/2 inch threaded connections are standard. Typical install scenarios include water supply lines, hydronic heating loops, fuel gas branches within code-approved pressure ratings, and general service piping. The FBSPT x FBSPT end configuration threads directly onto male-threaded pipe or fittings. The three-piece union design allows the pipe run to be broken and reassembled at a single point without rotating adjacent pipe sections, which is useful during equipment service and replacement.

Key Features

• Class 125 pressure rating suited for standard service piping applications
• FBSPT x FBSPT threaded ends on both sides for direct connection to male-threaded pipe
• Brass construction provides corrosion resistance in water and compatible fluid service
• 1/2 inch fitting size fits common residential and light commercial pipe sizes
• Three-piece union body allows pipe disconnection without disturbing surrounding joints

Compatibility

Designed as an OEM-style replacement or new-installation fitting for 1/2 inch FBSPT threaded pipe systems rated to Class 125 service conditions.

Installation Notes

Installation should be performed by a licensed plumber or pipefitter in accordance with applicable local codes including the IPC and IFGC where relevant. Shut off and depressurize the supply line completely before removing or installing the union. Apply an appropriate thread sealant or PTFE tape to male threads per the pipe system requirements. Do not overtighten brass fittings, as brass threads can be damaged by excessive torque.