Nibco NLH150H Wafer Butterfly Valve 4 Inch Lever Handle

Product Description

The NIBCO NLH150H is a manual wafer-style butterfly valve designed for 4-inch pipe systems. It features a ductile iron body, an aluminum bronze disc, and a stainless steel stem rated to material grades 416 (stem) and 954/955 (disc). The lever handle provides direct quarter-turn operation for fast open and close cycles. Rated for a maximum working pressure of 200 psi and temperatures up to 180 degrees F, this valve is built for demanding commercial and industrial fluid control applications. It meets MSS SP-67 standards and carries U.S. Coast Guard Category A approval, making it a reliable choice for marine and general plumbing systems.

The NLH150H is suited for use in commercial plumbing, HVAC hydronic systems, industrial process piping, and marine applications where a compact wafer-style valve is required between pipe flanges. The wafer design allows installation between standard pipe flanges without extended face-to-face dimensions, keeping piping layouts tight and manageable. Its lead-free construction satisfies current plumbing code requirements for potable and non-potable fluid systems. Licensed plumbers, pipefitters, and marine engineers are the primary installers of this valve.

Key Features

• Ductile iron body for strength and corrosion resistance in commercial piping
• Aluminum bronze disc (grade 954/955) with stainless steel stem (grade 416) for extended service life
• Buna-N seat material compatible with a wide range of fluid media
• Quarter-turn lever handle for quick manual shutoff
• Rated to 200 psi maximum working pressure and 180 degrees F
• Lead-free construction — compliant with applicable plumbing codes
• Meets MSS SP-67 and MSS SP-25 marking standards; U.S. Coast Guard Category A listed

Compatibility

Designed as a wafer-style butterfly valve for installation between pipe flanges on 4-inch pipe systems in commercial plumbing, hydronic, and marine applications.

Installation Notes

Installation should be performed by a licensed plumber or pipefitter in accordance with applicable local codes and ASME B31 piping standards. Depressurize and fully drain the piping system before removing or installing any valve. Align the wafer body carefully between mating flanges to ensure proper seating and even bolt loading around the full bolt circle. Do not exceed the rated working pressure or temperature listed on the valve body.