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The PARKER PP4TEU4 is a push-to-connect tube fitting plug designed to seal off open tubing ends in pneumatic and fluid-handling systems. Manufactured from polypropylene and rated to 150 psi, this plug accepts 1/4 inch outside diameter tubing and locks in place without tools. The fitting is tan in color, consistent with standard polypropylene push-to-connect series components. It is a compact, single-use-per-installation component that plumbers, HVAC technicians, and industrial maintenance techs rely on to temporarily or permanently cap active tubing lines.
This plug is suited for low-pressure pneumatic lines, water distribution tubing, and light fluid-handling applications where a clean, leak-free termination is required. The push-to-connect design eliminates the need for threaded connections, solvents, or compression ferrules. Typical install scenarios include capping unused ports on manifolds, sealing branch lines during system modifications, or terminating tubing runs during staged installations.
Designed as an OEM-style plug fitting for use with 1/4 inch outside diameter push-to-connect tubing systems in pneumatic and light fluid-handling applications.
Installation is performed by plumbers, HVAC technicians, or maintenance technicians. Before installing or removing this plug, depressurize the tubing system completely and verify pressure has been relieved at the line being capped. Ensure tubing is cut cleanly and squarely with no burrs before insertion to achieve a proper seal. To release the fitting, depress the collet ring while pulling the tube free — do not force removal under pressure.
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