Nibco NLG160H Lug Style Butterfly Valve 4 Inch 125/150 Lb

Product Description

The NIBCO NLG160H is a 4-inch lug-style butterfly valve in the LD-2100-5 series, built for reliable shut-off and flow control in commercial and light industrial piping systems. Rated for 125/150 lb service and up to 180 degrees F, it handles air, oil, and water applications including compressed air and vacuum lines. The valve features a ductile iron body, aluminum bronze disc, and 416 stainless steel stem pin, paired with a Buna-N seat and a manual gear operator for precise, low-effort actuation on larger-diameter lines. It is domestically manufactured and carries a 5-year limited warranty.

This valve is suited for commercial HVAC, plumbing, and light industrial process piping where a lug-style configuration is required. The lug pattern allows the valve to be installed as an end-of-line or dead-end service valve without requiring a downstream flange. It is commonly specified on chilled water, condenser water, compressed air, and general water distribution systems at the 4-inch pipe size. Licensed plumbers, pipefitters, and mechanical contractors are the primary installers.

Key Features

• Lug-style body allows end-of-line installation without downstream flange
• Ductile iron body rated for 125/150 lb flanged service
• Aluminum bronze disc resists corrosion in water and oil media
• 416 stainless steel stem pin for durability and corrosion resistance
• Buna-N seat compatible with air, oil, and water service
• Manual gear operator provides controlled actuation on 4-inch diameter valve
• Domestically manufactured with 5-year limited warranty

Compatibility

Designed for use with 4-inch ANSI Class 125/150 lb flanged piping systems in commercial and light industrial applications handling air, oil, or water media, including compressed air and vacuum services.

Installation Notes

Installation should be performed by a licensed plumber or pipefitter in accordance with applicable mechanical and plumbing codes. Depressurize and isolate the piping section completely before removing any existing valve or fitting. Lug-style valves require proper bolt torque applied evenly across all flange lugs — refer to the manufacturer installation sheet for the torque sequence appropriate to the gasket and flange material in use. Verify media compatibility with Buna-N seating before commissioning.