Parker 4M-V4LN-SS Needle Valve 1/4 Inch Mnpt Stainless 5000 Psi

Product Description

The PARKER 4M-V4LN-SS is a straight needle valve designed for precise flow control in high-pressure fluid and gas systems. Built with a 316 stainless steel body and a polytetrafluoroethylene (PTFE) seal, it handles working pressures up to 5,000 psi. The round handle provides manual throttling control, and the male NPT connections on both ends allow for straightforward inline installation. At 1.88 inches overall length and 3.06 inches overall height, this valve fits into compact plumbing and instrumentation assemblies. Licensed plumbers, pipefitters, and instrumentation technicians install this valve in process lines, test rigs, and hydraulic systems where reliable shutoff and flow metering are required.

This valve is suited for residential and commercial applications involving high-pressure lines where corrosion resistance and a reliable seal are priorities. The 1/4 inch pipe size and MNPT x MNPT end configuration make it a common choice for instrument manifolds, sample lines, chemical injection points, and hydraulic test panels. The 316 stainless steel body provides resistance to corrosive media, and the PTFE seal maintains integrity across a wide range of fluid and gas types.

Key Features

• Maximum working pressure of 5,000 psi suitable for high-pressure applications
• 316 stainless steel body for corrosion resistance in aggressive media
• PTFE seal compatible with a broad range of fluids and gases
• MNPT x MNPT end connections for standard inline installation
• Round handle design for manual flow throttling and shutoff
• Compact overall dimensions: 1.88 inches OAL and 3.06 inches OAH

Compatibility

Designed as an OEM-style replacement or new-installation needle valve for 1/4 inch MNPT high-pressure instrumentation and process piping applications.

Installation Notes

Installation should be performed by a licensed plumber or qualified pipefitter in accordance with applicable codes such as the IPC or ASME B31.3 for process piping. Depressurize and isolate the line fully before removing any existing valve or making connections. Apply appropriate thread sealant rated for the system media and pressure to the MNPT threads before installation. Do not exceed the rated working pressure of 5,000 psi.