Parker 8F-V12LN-B Needle Valve 1/2 Inch Fnpt Brass 3000 Psi

Product Description

The PARKER 8F-V12LN-B is a straight needle valve designed for precise flow control in high-pressure fluid and gas systems. Built with a brass body and a polytetrafluoroethylene (PTFE) seal, it handles working pressures up to 3,000 psi. The round handle provides reliable manual actuation with consistent throttling control. Connections are female NPT on both ends, making inline installation straightforward. At 2.76 inches overall length and 4.26 inches overall height, the valve fits into tight plumbing assemblies without excessive clearance requirements. This valve is suited for industrial, HVAC, and instrumentation applications where shutoff and flow regulation are required.

This valve is used in straight-line plumbing runs where inline flow control or isolation is needed. The FNPT x FNPT end configuration allows it to thread directly into standard NPT pipe fittings on both sides. Typical install scenarios include hydraulic lines, instrument sensing lines, compressed air manifolds, and refrigerant or fluid service panels. It is sized for 1/2 inch pipe, making it compatible with common half-inch threaded piping systems found in light industrial and mechanical service environments. Licensed plumbers, pipefitters, and HVAC technicians are the primary installers.

Key Features

• Straight flow path with FNPT x FNPT connections for inline installation
• Brass body for corrosion resistance in fluid and gas service
• PTFE seal for chemical compatibility and low-friction operation
• Rated to 3,000 psi maximum working pressure
• Round handle for manual throttling and shutoff control
• Compact overall dimensions: 2.76 inches length by 4.26 inches height

Compatibility

Designed as an OEM-style replacement or new-installation needle valve for 1/2 inch NPT threaded piping systems in industrial, HVAC, and instrumentation applications.

Installation Notes

Installation should be performed by a licensed plumber or pipefitter following applicable IPC or local mechanical code requirements. Isolate and depressurize the line fully before removing any existing valve or fitting. Apply thread sealant or PTFE tape to the male NPT threads mating to this valve per standard practice. Do not exceed the 3,000 psi rated working pressure of the valve.