Nibco NL75004 Y-pattern Check Valve 1/4 in Fnpt 200 Wog

Product Description

The NIBCO NL75004 is a Y-pattern check valve designed to allow one-directional flow and prevent backflow in piping systems. The bronze body and nitrile butadiene rubber (NBR) seal provide corrosion resistance and reliable seating across a range of fluid service applications. Rated at 200 WOG (water, oil, gas), this valve is built for demanding service conditions. Female NPT connections on both ends allow for straightforward threaded installation. It is installed by licensed plumbers and pipefitters in residential and light commercial mechanical systems.

The NL75004 is suited for use in water supply, compressed air, and general fluid piping systems where backflow prevention is required. The Y-pattern body design offers lower pressure drop compared to swing-type check valves, making it a practical choice in systems where flow efficiency matters. At 1/4 inch pipe size, this valve fits smaller branch lines and instrument connections commonly found in HVAC, plumbing, and light industrial piping layouts.

Key Features

• Y-pattern body design provides lower pressure drop than swing-style check valves
• Rated 200 WOG for use in water, oil, and gas service
• Bronze body offers corrosion resistance in wet and general-service environments
• Nitrile butadiene rubber (NBR) seal delivers reliable shut-off and chemical compatibility
• FNPT x FNPT end connections for standard threaded pipe assembly
• 1/4 inch pipe size for small-diameter branch and instrument piping

Compatibility

Designed as an OEM-style replacement or new-installation check valve for 1/4 inch FNPT threaded piping systems in plumbing, HVAC, and light industrial applications rated up to 200 WOG.

Installation Notes

Installation is performed by a licensed plumber or pipefitter. Shut off and depressurize the piping system completely before removing any existing valve or fitting. Apply thread sealant or PTFE tape to male threads per manufacturer and applicable IPC guidelines before assembly. Do not over-torque threaded connections on bronze-body valves, as this can crack fittings or distort seats.