Nibco NLJ140H Wafer Butterfly Valve 4 Inch Lever Handle

Product Description

The NIBCO NLJ140H is a manual wafer butterfly valve engineered for 4-inch pipe systems requiring reliable flow control under demanding service conditions. Built with a cast iron body, aluminum bronze disc, and stainless steel stem, this valve delivers a strong combination of corrosion resistance and structural durability. A Buna-N seat provides a positive shutoff seal rated for service up to 200 psi and 180 degrees F. The lever handle allows fast quarter-turn operation for isolation or throttling. This valve is installed by licensed plumbers, pipefitters, and HVAC mechanical contractors working on commercial and industrial piping systems.

The NLJ140H wafer-style design fits between standard flanges, making it a compact and cost-effective choice for tight mechanical spaces. Its lever handle configuration suits applications where frequent manual operation is required. Typical installations include chilled water, heating hot water, condenser water, and general industrial fluid service lines in commercial buildings and light industrial facilities. The valve is appropriate for both new construction and retrofit piping projects on 4-inch schedule pipe.

Key Features

• Cast iron body provides rugged durability for commercial and industrial service
• Aluminum bronze disc resists corrosion in water and mild fluid applications
• Stainless steel stem for long service life and resistance to pitting
• Buna-N seat rated to 200 psi and 180 degrees F for broad compatibility
• Wafer design installs between flanges for compact, low-profile mounting
• Quarter-turn lever handle enables fast manual isolation or throttling

Compatibility

Designed as an OEM-style wafer butterfly valve for 4-inch flanged piping systems conforming to standard flange face dimensions. Meets API 609 and MSS SP-67 standards for butterfly valves, making it suitable for systems specified to those standards.

Installation Notes

Installation is performed by licensed plumbers or pipefitters following applicable IPC and ASME B31 piping code requirements. Isolate and depressurize the pipeline fully before installing or removing the valve. Ensure flange gaskets are properly seated on both faces before torquing flange bolts to the pipe specification. Do not exceed the rated working pressure or temperature listed on the valve body markings per MSS SP-25.