Parker A4RD5-MG Push-to-connect Plug-in Reducer 1/4 in Od

Product Description

The PARKER A4RD5-MG is a push-to-connect plug-in reducer tube fitting designed for use in pneumatic and fluid-handling systems. Constructed from polyoxymethylene (POM), this fitting accepts a 1/4-inch OD tube and allows for a quick, tool-free inline reduction without the need for threaded connections or additional hardware. Rated to 300 psi, it delivers reliable sealing in moderate-pressure applications. The tan POM body resists moisture, mild chemicals, and dimensional creep, making it a practical choice for instrumentation, compressed air, and light fluid lines. Licensed HVAC techs, plumbers, and automation technicians working with push-to-connect tubing systems will find this fitting compatible with standard metric and fractional tube arrangements.

This fitting is suited for residential and light commercial applications where quick-disconnect tubing runs are used in pneumatic controls, instrumentation panels, HVAC controls, or compressed-air distribution systems. The plug-in reducer design allows installation directly into a port or inline without tools, reducing labor time during panel builds or equipment service calls. It is typically installed in low-to-moderate pressure dry or wet air systems where POM material compatibility is confirmed for the media being conveyed.

Key Features

• Push-to-connect design allows tool-free tube insertion and removal
• Plug-in reducer configuration reduces tubing OD inline or at a port entry
• Rated to 300 psi for moderate-pressure pneumatic and fluid service
• Polyoxymethylene (POM) construction resists moisture, mild chemicals, and creep
• 1/4-inch OD tube connection in a compact, lightweight body
• Tan color coding aids quick identification on multi-line panel assemblies

Compatibility

Designed as an OEM-style push-to-connect fitting for use with 1/4-inch OD tubing in pneumatic and fluid-handling systems where POM-compatible media are present and system pressure does not exceed 300 psi.

Installation Notes

Depressurize and de-energize the system completely before removing or installing any push-to-connect fittings. Ensure tube ends are cut square, deburred, and clean before insertion to achieve a proper seal. This fitting is typically installed by HVAC technicians, instrumentation mechanics, or plumbers working on compressed-air or pneumatic-controls tubing. Verify that the tubing material and conveyed media are compatible with POM before placing the fitting in service.