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The PARKER B12 is a brass pneumatic hose coupler designed for compressed air systems using the Tru-Flate Automotive interchange standard. It features a 1/4-18 male NPTF threaded connection and a 1/4 inch body diameter, making it a compact, reliable fitting for connecting air hoses and pneumatic tools. With a maximum working pressure of 300 psi and an operating temperature range of -40 to 250 degrees F, the B12 handles demanding shop and field conditions. Licensed HVAC technicians, plumbers, mechanics, and general contractors commonly use this coupler in air tool and compressor line assemblies.
The B12 is suited for light industrial, automotive service, and general trade applications where Tru-Flate Automotive interchange compatibility is required. It installs on compressed air distribution lines, portable compressor hoses, and pneumatic tool connections. The threaded male NPTF design creates a pressure-tight seal without the need for additional sealant in most applications. At 2.05 inches overall length, it fits standard hose end assemblies without adding significant bulk to the connection.
Designed for use with Tru-Flate Automotive interchange pneumatic systems. Compatible with 1/4 inch body couplers and plugs following the Tru-Flate Automotive interchange standard. Thread size 1/4-18 NPTF fits standard NPT air line fittings.
Installation should be performed by a qualified technician familiar with compressed air systems. Depressurize and bleed down the air line fully before removing or installing any coupler. Use an appropriately sized wrench on the 0.75 inch hex to achieve a proper seal without over-torquing the brass body. Inspect the NPTF threads and mating surfaces for damage before assembly.
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