Parker 21KAIN13MPN Pneumatic Coupler 1/4-18 Female Npsf Brass

Product Description

The PARKER 21KAIN13MPN is a high-flow pneumatic coupler designed for threaded air line connections in compressed-air systems. Part of the Parker 21 Series, this coupler features a 1/4-18 female NPSF thread and a brass body construction rated to 250 psi maximum working pressure. The body diameter measures 1/8 inch with a hex size of 0.55 inches for standard wrench engagement. Rated for temperatures from -4 degrees F to 212 degrees F, this coupler suits a wide range of shop and field pneumatic applications. Licensed HVAC technicians, plumbers, and general contractors install this type of fitting when connecting pneumatic tools and air supply lines.

The 21KAIN13MPN is intended for use in high-flow pneumatic systems where a reliable threaded female NPSF coupler is required. It is suited for residential and light commercial compressed-air installations, tool connections, and pneumatic control line assemblies. The brass construction makes it compatible with dry or lubricated compressed air service within the rated pressure and temperature range. This coupler ships as a single unit.

Key Features

• High-flow interchange type for increased air volume delivery
• 1/4-18 female NPSF threaded connection for standard pneumatic fittings
• Brass body construction for corrosion resistance in compressed-air service
• 250 psi maximum working pressure rating
• Rated operating range from -4 degrees F to 212 degrees F
• 0.55-inch hex size for wrench-assisted installation and removal

Compatibility

Designed as an OEM-style replacement coupler for high-flow pneumatic systems using 1/4-18 female NPSF threaded connections in the Parker 21 Series.

Installation Notes

Installation should be performed by a qualified tradesperson familiar with compressed-air systems. Depressurize the air line completely before removing or installing any coupler. Apply thread sealant appropriate for pneumatic service to the NPSF threads before assembly. Do not exceed the 250 psi maximum working pressure rating during operation or testing.