Nibco NL75008 Check Valve 3/4 Inch Y-pattern Fnpt Bronze

Product Description

The NIBCO NL75008 is a 3/4 inch Y-pattern check valve designed to allow one-directional flow and prevent backflow in fluid piping systems. The valve features female NPT connections on both ends and a bronze body rated for 200 psi working pressure, making it suitable for water, oil, and gas service within that pressure range. A nitrile butadiene rubber (NBR) seal provides reliable shutoff and resistance to a range of common fluids. This valve is installed by licensed plumbers and pipefitters in commercial and residential piping applications where backflow prevention is required.

The NL75008 is suited for 3/4 inch threaded piping systems in residential and light commercial installations. The Y-pattern body design orients the seat at an angle to the flow path, reducing pressure drop compared to straight-pattern check valves. It is commonly installed in water supply lines, HVAC hydronic systems, and general-purpose plumbing where a threaded, in-line backflow preventer is needed. Both FNPT end connections allow direct threaded makeup to standard NPT pipe and fittings.

Key Features

• Y-pattern body reduces flow restriction and pressure drop compared to straight-body designs
• Bronze body construction provides corrosion resistance for water and fluid service
• Nitrile butadiene rubber (NBR) seal material suits common water and petroleum-based fluids
• 200 psi maximum working pressure rating
• Female NPT x Female NPT connections for straightforward threaded installation
• Manufactured under ISO 9001:2008 quality standards

Compatibility

Designed as an OEM-style replacement or new-installation check valve for 3/4 inch female NPT threaded piping systems in residential and commercial plumbing and hydronic applications.

Installation Notes

Installation should be performed by a licensed plumber in accordance with applicable local plumbing codes and the IPC. Shut off the water supply and relieve system pressure before removing or installing any threaded valve. Apply thread sealant or PTFE tape to male NPT threads before makeup, and tighten to a firm, leak-free seating without over-torquing bronze fittings. Verify flow direction arrow on the valve body is oriented correctly with system flow before returning the line to service.