Nibco NHA3LJE Gate Valve 2-1/2 in Flanged Cast Iron 125

Product Description

The NIBCO NHA3LJE is a cast iron outside screw and yoke (OS and Y) gate valve designed for isolation service in commercial and industrial piping systems. It features a 2-1/2 inch flanged end connection, a bolted bonnet, and a solid wedge disc. The 125 pressure class rating makes it suitable for low-pressure steam, water, oil, and gas distribution lines. A wheel handle provides manual operation and clear visual indication of valve position through the rising stem. Licensed plumbers and pipefitters install this valve as a reliable shutoff point in main line and branch applications.

This valve is commonly installed in commercial buildings, industrial plants, and municipal water systems where a full-bore, low-restriction shutoff is required. The flanged connection suits larger-diameter piping runs where threaded connections are impractical. The OS and Y design allows quick visual confirmation that the valve is open or closed, which is a code requirement in many fire protection and boiler room installations. It is appropriate for both new construction and retrofit projects handled by licensed pipefitters or mechanical contractors.

Key Features

• Outside screw and yoke (OS and Y) rising stem provides clear open or closed visual indication
• Bolted bonnet construction allows repacking under pressure in most service conditions
• Solid wedge disc delivers positive shutoff across a wide range of media
• Flanged end connection rated to 125 pressure class for straightforward bolt-up installation
• Wheel handle enables manual operation without additional tooling
• Cast iron body suited for water, steam, and compatible fluid service

Compatibility

Designed as an OEM-style flanged gate valve replacement or new installation fitting for 2-1/2 inch cast iron piping systems operating within ASME Class 125 flanged connection standards.

Installation Notes

Installation should be performed by a licensed pipefitter or plumber in accordance with applicable mechanical codes including ASME B16.1 flanged joint standards. Isolate and depressurize the line and allow it to cool before removing or installing the valve. Flange bolt torque patterns should follow standard cross-sequence procedures using appropriate gaskets rated for the service medium. Verify flow direction requirements and confirm the valve is in the fully open position before returning the system to service.