Merit Brass XNL187-12 Pipe Union 3/4 Inch Fnpt 125 Lb

Product Description

The MERIT BRASS XNL187-12 is a 3/4 inch nominal brass pipe union with female NPT (FNPT) end connections rated at 125 lb. Pipe unions allow sections of threaded pipe to be joined and disconnected without rotating the pipe itself, making them essential for service access on water, gas, and low-pressure steam lines. This union ships with a rough brass finish and is manufactured as an import product. It is installed by licensed plumbers and pipefitters in both residential and light commercial applications wherever a break-apart connection is needed for future service or equipment removal.

This union is suited for 3/4 inch threaded pipe systems carrying water, compressed air, or other compatible media within the 125 lb pressure rating. The FNPT end style accepts standard tapered male NPT pipe threads on both sides of the union. Typical install scenarios include water distribution laterals, boiler piping, steam heating systems, and industrial process lines where future disconnection of a piping run is anticipated.

Key Features

• 3/4 inch nominal size fits standard schedule 40 threaded pipe
• Female NPT (FNPT) connections on both ends accept tapered male NPT threads
• 125 lb pressure class for low-pressure water, air, and steam service
• Brass construction offers corrosion resistance in water and many fluid systems
• Rough finish provides a clean seating surface for thread sealing compounds or PTFE tape
• Three-piece union design allows pipe disconnection without disturbing the surrounding piping run

Compatibility

Designed as an OEM-style replacement or new-installation fitting for 3/4 inch nominal NPT threaded pipe systems rated at 125 lb class.

Installation Notes

Installation is performed by a licensed plumber or pipefitter in accordance with applicable local plumbing codes and the International Plumbing Code (IPC). Shut off and depressurize the line completely before removing or installing any union fitting. Apply PTFE thread tape or a listed pipe joint compound to all male NPT threads before makeup. Do not over-tighten the union nut, as brass fittings can be damaged by excessive torque.

Technical Specifications

• Nominal Size: 3/4 inch
• End Style: FNPT (Female National Pipe Taper)
• Pressure Rating: 125 lb
• Material: Brass
• Finish: Rough
• Origin: Import

Standard Information

• Brand: MERIT BRASS
• Manufacturer Part Number: XNL187-12