Parker A6MTS4-MG Male Swivel Branch Tee 3/8in Od 1/4in Nptf

Product Description

The PARKER A6MTS4-MG is a push-to-connect male swivel branch tee tube fitting designed for connecting tubing to threaded pipe ports in fluid and pneumatic systems. Built from polyoxymethylene (POM), a rigid acetal resin, this fitting accepts 3/8 inches outside diameter tubing and threads into a 1/4 inches NPTF port. The swivel design allows the branch leg to rotate during installation, reducing the need to reposition the tubing run. Rated to 300 psi, the fitting is suited for compressed air, water, and compatible fluid applications. The EPDM o-ring provides a reliable seal against the mating surface. HVAC, plumbing, and light industrial service techs install this type of fitting when routing instrument tubing or control lines to threaded manifolds and valve bodies.

This fitting is appropriate for residential and light commercial applications where push-to-connect convenience is needed at a branch tee junction. The male threaded branch leg connects directly to an NPTF port on a valve, manifold, or equipment housing, while the two inline push-to-connect ports accept 3/8 inches OD tubing without additional tools. Typical use cases include pneumatic control circuits, HVAC condensate or sensing line routing, and water treatment plumbing where quick, tool-free tube connections are preferred. The gray POM body is compatible with a range of non-aggressive fluids and gases within its rated pressure range.

Key Features

• Push-to-connect inline ports accept 3/8 inches OD tubing without tools or ferrules
• Male swivel branch leg threads into 1/4 inches NPTF ports
• 300 psi pressure rating suitable for compressed air and water service
• Polyoxymethylene (POM) body resists moisture and light chemical exposure
• EPDM o-ring provides a reliable face seal at the threaded connection
• Swivel branch leg simplifies alignment during installation

Compatibility

Designed as an OEM-style push-to-connect branch tee for systems using 3/8 inches OD tubing and 1/4 inches NPTF threaded ports in pneumatic, HVAC control, or light plumbing applications.

Installation Notes

Installation is performed by licensed plumbers, HVAC technicians, or qualified service personnel. Depressurize and isolate the system before installing or removing any push-to-connect fitting. Thread the male NPTF branch leg into the port by hand first, then tighten with an appropriate wrench — do not overtighten POM fittings, as the plastic threads can crack under excess torque. Insert tubing straight into each push-to-connect port until it seats fully, and verify no leaks under system pressure before returning the system to service.