Power First 30E664 Coupler Plug Fnpt 1/4 Inch Steel

Product Description

The POWER FIRST 30E664 is a female NPT coupler plug designed to seal and cap pneumatic or fluid line couplers when not in use. Constructed from steel, this plug threads into a standard 1/4 inch FNPT coupler body to close off the port and prevent contamination, pressure loss, or damage to the coupler seating surface. It is a standard consumable component used across HVAC, plumbing, and general industrial applications wherever quick-disconnect coupler systems are present.

This coupler plug is suited for use in residential and commercial service environments where pneumatic tool lines, compressed air systems, or fluid transfer connections require a secure cap when equipment is disconnected. Technicians across the HVAC, plumbing, and mechanical trades regularly stock these plugs for routine maintenance and system protection tasks.

Key Features

• Female NPT thread for direct engagement with standard 1/4 inch coupler bodies
• Steel construction for durability under shop and field conditions
• Seals coupler ports to prevent contamination and pressure bleed-off
• Compact form factor for easy storage and on-the-job availability

Compatibility

Designed as an OEM-style replacement or service stock plug for standard 1/4 inch FNPT quick-disconnect coupler bodies used in pneumatic and fluid line applications.

Installation Notes

Installation is performed by hand-threading the plug into the FNPT coupler body. Depressurize the air or fluid line fully before removing any existing plug or fitting to avoid injury. Use appropriate thread sealant if the application requires a pressure-tight seal. This type of fitting is typically installed by HVAC technicians, plumbers, or mechanical contractors as part of routine system servicing.

Technical Specifications

• Thread Type: Female NPT (FNPT)
• Thread Size: 1/4 inch
• Material: Steel

Standard Information

• Brand: POWER FIRST
• Manufacturer Part Number: 30E664