Nibco nj1m00b Bronze Sweat Gate Valve 1-1/4 in CL150

Product Description

The NIBCO nj1m00b is a 1-1/4 inch bronze sweat-end gate valve designed for copper piping systems in plumbing and hydronic heating applications. Built to Class 150 (CL150) standards with a 300 CWP (cold working pressure) rating, it features a rising stem design that provides a clear visual indication of open or closed position. The union bonnet construction allows in-line servicing without removing the valve body from the line. This valve is rated for service up to 150 degrees F for steam and 366 degrees F for saturated steam, making it suitable for a wide range of fluid control tasks. Licensed plumbers and pipefitters are the primary installers.

This gate valve is intended for residential and light commercial copper piping installations where full-bore, low-restriction flow control is required. Typical applications include domestic water supply lines, hydronic heating loops, and general plumbing service lines sized at 1-1/4 inches. The sweat (solder) end connections integrate directly with standard copper tube without additional fittings, simplifying installation in tight mechanical spaces.

Key Features

• Rising stem design provides visual open/closed indication at a glance
• Union bonnet allows in-line repacking and servicing without pipe disconnection
• Bronze body construction suited for potable water and hydronic service
• Sweat (solder) end connections for direct copper tube integration
• CL150 rated with 300 CWP for reliable pressure service
• Dual temperature rating: 150 degrees F steam and 366 degrees F saturated steam

Compatibility

Designed as an OEM-style replacement or new-installation gate valve for 1-1/4 inch copper sweat 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 applicable local plumbing codes and IPC guidelines. Shut off the water supply and relieve system pressure completely before soldering sweat connections. Use appropriate flux and lead-free solder where required by code for potable water systems. Allow solder joints to cool fully before returning the system to pressure.

Technical Specifications

• End Connection: Sweat (Solder)
• Valve Type: Gate Valve
• Stem Type: Rising Stem
• Bonnet Type: Union Bonnet
• Body Material: Bronze
• Pipe Size: 1-1/4 inches
• Pressure Rating: 300 CWP
• Class Rating: CL150
• Temperature Rating: 150 degrees F (steam) / 366 degrees F (saturated steam)
• Series: S-134

Standard Information

• Brand: NIBCO
• Manufacturer Part Number: nj1m00b