Merit Brass XNL111-12 3/4 Inch Fnpt Straight Pipe Coupling

Product Description

The MERIT BRASS XNL111-12 is a straight pipe coupling designed for joining two sections of threaded pipe in a continuous run. It uses female NPT (FNPT) threading on both ends and is rated at 125 lb pressure class, making it suitable for a range of low- to medium-pressure fluid and gas piping applications. Constructed from brass with a rough finish, this coupling offers reliable corrosion resistance in water, compressed air, and compatible fluid systems. It fits a 3/4 inch nominal pipe size. Licensed plumbers and pipefitters are the typical installers for this type of fitting in commercial and residential piping systems.

This coupling is appropriate for use in residential and light commercial plumbing, compressed air distribution, and hydronic heating systems where a 3/4 inch threaded brass fitting is required. The 125 lb pressure rating fits standard service conditions encountered in typical building utility piping. Its straight configuration makes it a straightforward solution for inline pipe connections where no directional change is needed.

Key Features

• 3/4 inch nominal pipe size for common residential and commercial piping runs
• FNPT threading on both ends for standard threaded pipe connections
• 125 lb pressure class rating suitable for low- to medium-pressure service
• Brass construction provides corrosion resistance in water and compatible fluid applications
• Rough finish — compatible with pipe dope or PTFE tape sealing
• Straight coupling design for inline pipe joining without directional change

Compatibility

Designed as an OEM-style replacement or new-installation fitting for 3/4 inch NPT threaded pipe systems operating within a 125 lb pressure class service rating.

Installation Notes

Installation should be 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 piping system before removing or installing any threaded fittings. Apply PTFE tape or an approved pipe thread sealant to the male threads before making up the joint. Do not over-tighten, as brass threads can be damaged by excessive torque.

Technical Specifications

• Nominal Pipe Size: 3/4 inch
• End Style: FNPT (Female National Pipe Thread) both ends
• Pressure Rating: 125 lb
• Material: Brass
• Finish: Rough
• Configuration: Straight coupling
• Origin: Import

Standard Information

• Brand: MERIT BRASS
• Manufacturer Part Number: XNL111-12