Nibco NHA701H Gate Valve 4 Inch Flanged Ductile Iron

Product Description

The NIBCO NHA701H is a non-rising stem gate valve built for industrial and commercial pipeline systems requiring reliable shutoff performance at standard 150 pressure class ratings. The valve features a ductile iron body with a bolted bonnet design and a solid wedge disc, delivering a tight seal across a wide range of fluid service applications. At 4 inches pipe size with a flanged raised face end connection, this valve is suited for larger flow lines where positive isolation is required. Licensed plumbers, pipefitters, and mechanical contractors typically specify and install this type of valve in process piping, HVAC hydronic systems, and general waterworks applications.

The NHA701H is designed for 4-inch flanged raised face piping systems operating within Pressure Class 150 service conditions. Its non-rising stem configuration makes it practical for installations where vertical clearance is limited, such as in mechanical rooms, utility tunnels, or congested equipment areas. The solid wedge disc provides consistent bidirectional shutoff. This valve is commonly installed in commercial building mechanical systems, industrial process lines, and municipal water distribution infrastructure where ductile iron construction is specified for durability and corrosion resistance.

Key Features

• Non-rising stem design suits low-clearance installations
• Solid wedge disc provides reliable bidirectional shutoff
• Bolted bonnet allows for field maintenance and repacking
• Flanged raised face end connection for standard ANSI flange bolt-up
• Ductile iron body offers high strength and impact resistance compared to cast iron
• Pressure Class 150 rating for broad compatibility with standard piping systems

Compatibility

Designed as an OEM-style replacement or new installation gate valve for 4-inch Pressure Class 150 flanged raised face piping systems using ANSI-standard bolt patterns.

Installation Notes

Installation should be performed by a licensed pipefitter or plumber in accordance with applicable mechanical and plumbing codes, including ASME B31.1 or B31.9 as appropriate for the service type. Depressurize and drain the line fully before removing any existing valve or breaking a flanged connection. Verify flange bolt pattern, gasket type, and raised face dimensions match the mating flanges before installation. Do not use this valve for throttling service — gate valves are designed for fully open or fully closed operation only.