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The PARKER PF-00273 is a push-to-connect union tube fitting designed for quick, tool-free connections in pneumatic and fluid transfer lines. Constructed from nylon, it handles pressures up to 260 psi and accepts tubing with a 3/16-inch outside diameter on both ends. The union configuration connects two runs of tubing in a straight line without threading or compression tools. This fitting is commonly installed by HVAC technicians, plumbers, and industrial maintenance pros working on low-pressure pneumatic controls, refrigeration sensing lines, and fluid distribution systems where fast assembly and reliable sealing are priorities.
This fitting is suited for residential and light commercial applications involving small-diameter pneumatic tubing runs. Typical install scenarios include control-line connections on HVAC equipment, instrument air circuits, and low-pressure fluid distribution panels. The nylon body is compatible with a range of common tubing materials used in these applications. Each package contains two fittings, making it practical to keep extras on hand for service calls.
Designed as an OEM-style push-to-connect replacement union fitting for pneumatic control and low-pressure fluid lines using 3/16-inch OD tubing.
Installation requires no special tools — cut tubing square and clean, then insert firmly until the tube bottoms out in the fitting body. Depressurize and de-energize any connected system before servicing fittings. Verify tubing OD and material compatibility with system pressure and fluid media before installation. Inspect the tube end for burrs or deformation that could compromise the internal seal.
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