Merit Brass XNL187-08 Pipe Union 1/2 in Fnpt 125 Lb

Product Description

The MERIT BRASS XNL187-08 is a 1/2 inch nominal brass pipe union with female NPT (FNPT) end connections and a 125 lb pressure rating. A pipe union allows two sections of pipe to be joined and disconnected without rotating either pipe run, making it a standard fitting for service points in plumbing and hydronic systems. The body is manufactured from brass with a rough finish. This fitting is sized for 1/2 inch nominal pipe and is installed by licensed plumbers and pipefitters in both residential and light commercial applications.

This union is suited for use in domestic water supply lines, low-pressure steam systems, and hydronic heating piping where a removable threaded connection is required. The FNPT threading on both ends mates with standard NPT male pipe threads. The 125 lb pressure class makes it appropriate for general-service water and steam piping operating within typical residential and light commercial pressure ranges.

Key Features

• 1/2 inch nominal pipe size with FNPT end connections on both sides
• 125 lb pressure class rated for general-service water and low-pressure steam
• Brass construction offers corrosion resistance in water and steam service
• Union design allows pipe disconnection without disturbing adjacent fittings or rotating pipe
• Rough finish suitable for concealed or utility installations

Compatibility

Designed as an OEM-style threaded fitting replacement for 1/2 inch NPT piping systems in residential and light commercial plumbing and hydronic heating applications.

Installation Notes

Installation should be performed by a licensed plumber or pipefitter in accordance with the International Plumbing Code (IPC) and applicable local codes. Shut off and depressurize the supply line before removing or installing any union fitting. Apply thread sealant or PTFE tape to the male NPT threads before assembly. Do not overtighten brass fittings, as the material is softer than ferrous alternatives and threads can be damaged by excessive torque.

Technical Specifications

• Nominal Pipe Size: 1/2 inch
• End Style: FNPT (Female National Pipe Thread)
• Pressure Rating: 125 lb
• Material: Brass
• Finish: Rough

Standard Information

• Brand: MERIT BRASS
• Manufacturer Part Number: XNL187-08