Specialty Mfr 3995290 Manual Ball Valve 1/4 Inch Mnpt X Fnpt

Product Description

The SPECIALTY MFR 3995290 is a standard manual ball valve designed for 1/4 inch pipe connections with a male NPT inlet and female NPT outlet. The valve body is constructed from nylon, making it lightweight and suitable for low-pressure fluid control applications. A wedge-style handle provides positive open and close operation without the need for tools. Buna-N seals deliver reliable resistance to common oils, fuels, and water-based media. Licensed plumbers and HVAC technicians commonly install this valve type in refrigeration, pneumatic, or general-purpose fluid lines.

This valve is suited for residential and light commercial applications where a compact 1/4 inch shutoff point is required. Typical installations include small-diameter supply lines, pneumatic control circuits, and auxiliary fluid connections. The MNPT x FNPT end configuration allows inline installation without additional fittings in most standard pipe runs. The nylon body keeps overall weight low and resists corrosion in non-abrasive fluid environments.

Key Features

• 1/4 inch pipe size with MNPT x FNPT end connections for direct inline installation
• Nylon body construction for lightweight, corrosion-resistant service
• Buna-N seals provide compatibility with oils, water, and many common refrigerants
• Wedge-style handle allows quick quarter-turn operation for positive shutoff
• Standard ball valve design for straightforward replacement and minimal maintenance

Compatibility

Designed as an OEM-style replacement or new-installation shutoff valve for 1/4 inch NPT pipe connections in residential and light commercial fluid or pneumatic systems.

Installation Notes

Installation is typically performed by a licensed plumber or HVAC technician. Shut off system pressure and depressurize the line completely before removing any existing valve or fitting. Apply appropriate thread sealant or PTFE tape to NPT threads and tighten to hand-tight plus a standard number of turns per IPC guidelines. Verify for leaks under system pressure before returning the line to service.