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The PARKER A8MRS6-MG is a push-to-connect male swivel run tee tube fitting designed for quick, tool-free tubing connections in fluid and pneumatic systems. Molded from polyoxymethylene (POM), this gray fitting accepts 1/2-inch outside diameter tubing and provides a 3/8-inch NPTF male swivel thread on the branch port. The run-tee configuration allows inline flow to continue through both run ports while adding a perpendicular male threaded outlet, making it a practical choice for branching compressed air or low-pressure fluid lines without additional fittings. Rated to 250 psi, it is suited for light industrial and HVAC auxiliary applications where fast assembly and reliable sealing matter.
This fitting is used in residential and light commercial applications where push-to-connect plumbing or pneumatic tubing must branch to a male-threaded port. Typical install scenarios include compressed air distribution, HVAC condensate or control-line routing, and fluid transfer panels. The swivel feature on the male thread end allows the fitting to be oriented without twisting connected tubing, simplifying routing in tight enclosures or panel installations. Licensed plumbers, HVAC technicians, and industrial maintenance technicians are the primary installers of this type of fitting.
Designed as an OEM-style push-to-connect fitting for systems using 1/2-inch OD tubing with a 3/8-inch NPTF male port connection. Consult system documentation to confirm pressure rating and fluid compatibility before installation.
Depressurize and lock out the system before removing or installing any fittings. Ensure tubing is cut cleanly and squarely, and that the outside diameter is within tolerance before inserting into the push-to-connect ports. NPTF threads are designed to seal on the thread form itself; verify thread engagement is adequate without over-torquing the plastic body. Follow applicable plumbing or pneumatic codes and the equipment manufacturer instructions for fitting replacement in pressurized systems.
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