Merit Brass 411bh-12 Half Coupling 3/4 in 304 Ss 1000 Psi

Product Description

The MERIT BRASS 411bh-12 is a barstock 304 stainless steel half coupling designed for threaded pipe connections in demanding plumbing, HVAC, and industrial piping applications. Machined from solid 304 SS barstock, this half coupling provides a female pipe thread (FPT) connection on a 3/4 inch fitting size and is rated to 1000 PSI working pressure. At 0.30 pounds, it is a compact, dense fitting suited for high-pressure service lines where corrosion resistance and mechanical integrity are both required. Licensed plumbers and pipefitters are the primary installers of this type of fitting.

This half coupling is appropriate for residential and light commercial piping systems where a terminal threaded connection is needed — such as capping a branch line, attaching a gauge port, or transitioning to a threaded valve or instrument. The FPT thread form accepts a standard male pipe thread (MPT) mating end. The 304 stainless steel construction makes it suitable for water, steam, and other mildly corrosive media where carbon steel fittings are not acceptable.

Key Features

• Machined from solid 304 stainless steel barstock for consistent wall thickness and strength
• 1000 PSI pressure rating supports high-pressure service applications
• 3/4 inch FPT connection for standard NPT-threaded pipe and fittings
• Corrosion-resistant 304 SS construction for water, steam, and mildly corrosive media
• Lightweight at 0.30 pounds — easy to handle in tight installation spaces

Compatibility

Designed as an OEM-style replacement or new-installation fitting for 3/4 inch NPT threaded piping systems requiring a half coupling end connection.

Installation Notes

Installation should be performed by a licensed plumber or pipefitter in accordance with applicable codes such as the IPC or IFGC. Apply an appropriate thread sealant or PTFE tape to the male threads before making up the joint. Shut off and depressurize the system completely before removing or installing any threaded fittings. Do not over-torque the fitting, as barstock stainless steel threads can gall if excessive force is applied without proper lubrication.

Technical Specifications

• Fitting Material: 304 Stainless Steel Barstock
• Fitting Size: 3/4 inches
• Connection Type: FPT (Female Pipe Thread, NPT)
• Type: Half Coupling
• Pressure Rating: 1000 psi
• Item Weight: 0.30 pounds

Standard Information

• Brand: MERIT BRASS
• Manufacturer Part Number: 411bh-12