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The PARKER PP4MC2 is a push-to-connect tube-to-pipe connector fitting designed to join 1/4 inch OD tubing to a 1/8 inch NPTF threaded port. Constructed from polypropylene, this fitting handles system pressures up to 150 psi and is rated for use in pneumatic and fluid transfer applications where a reliable, tool-free tube connection to a threaded port is required. The tan polypropylene body offers good chemical resistance for water, light chemical, and air service. Plumbers, HVAC technicians, and fluid system installers use this type of fitting to make quick, leak-resistant connections without compression tools or thread sealant on the tube side.
This connector is suited for residential and light commercial applications involving tubing runs connected to threaded port fittings. Typical installations include pneumatic control lines, water treatment equipment, ice maker supply lines, condensate drain systems, and instrumentation tubing. The push-to-connect design allows tubing to be inserted and locked in place without additional ferrules or clamps, making it appropriate for service work and OEM panel builds where speed and reliability are both important.
Designed as an OEM-style push-to-connect connector for 1/4 inch OD tubing connecting to 1/8 inch NPTF threaded ports in pneumatic controls, fluid handling systems, and light plumbing or HVAC equipment applications.
Installation should be performed by a qualified plumber, HVAC technician, or instrumentation technician. Depressurize and drain the line completely before removing or installing any fitting. Ensure tubing is cut square with no burrs and is fully inserted into the fitting body until it bottoms out before applying pressure. Apply thread sealant or PTFE tape to the NPTF threaded port in accordance with IPC or applicable local plumbing code requirements.
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