Nibco NL99J58 Ball Valve 3/4 Inch Full Port Fnpt

Product Description

The NIBCO NL99J58 is a standard manual ball valve designed for fluid isolation and flow control in piping systems. It features a full-port design, meaning the bore diameter matches the pipe interior, minimizing pressure drop across the valve. The body is constructed from carbon steel with a stainless steel trim package and a reinforced PTFE (polytetrafluoroethylene) seat for chemical resistance and long service life. A locking lever handle allows the valve to be secured in the open or closed position, which is critical in commercial and industrial applications where accidental actuation must be prevented. This is a three-piece body configuration with FNPT x FNPT end connections on a 3/4 inch pipe size. Licensed plumbers, pipefitters, and mechanical contractors are the primary installers.

This valve is suited for residential and light commercial plumbing, hydronic heating, compressed air, and general fluid handling lines where a reliable manual shutoff is required. The full-port configuration makes it appropriate for systems where maintaining flow velocity and minimizing restriction are priorities. FNPT x FNPT end connections allow direct threaded installation into standard pipe runs without additional adapters. The locking lever handle adds a layer of operational security in occupied facilities or multi-trade environments.

Key Features

• Full-port bore design minimizes pressure drop across the valve
• Carbon steel body for durability in demanding mechanical environments
• Stainless steel trim for corrosion resistance in the valve internals
• Reinforced PTFE seat provides chemical resistance and a reliable shutoff seal
• Locking lever handle prevents accidental repositioning during operation
• FNPT x FNPT end connections for straightforward threaded pipe installation
• Three-piece body construction allows in-line service and ball replacement

Compatibility

Designed as an OEM-style replacement or new-installation manual shutoff valve for 3/4 inch threaded pipe systems using standard FNPT connections.

Installation Notes

Installation is typically performed by a licensed plumber or pipefitter following applicable IPC or mechanical code requirements for the jurisdiction. Shut off and depressurize the line completely before removing any existing valve or making threaded connections. Apply appropriate thread sealant or PTFE tape to male threads per the sealant manufacturer instructions before engaging the FNPT connections. Verify flow direction and handle orientation before returning the system to service.