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The PARKER W68PLPR-4-1 is a push-to-connect to male NPT tube fitting designed for quick, tool-free tube connections in pneumatic and fluid control systems. Constructed from nickel-plated brass, it accepts a 1/4-inch OD tube on the push-to-connect end and terminates in a male NPT thread on the outlet end. The fitting is rated to 300 psi maximum working pressure, making it suitable for compressed air, instrumentation, and light hydraulic applications. The release button is molded from black flame-resistant material that meets UL94 V-0 compliance, an important consideration in panel-mounted or enclosed system builds. Plumbers, HVAC technicians, and instrumentation mechanics routinely specify this fitting type for compact manifold assemblies and equipment hookups.
This fitting is well suited for residential and light commercial applications where a push-to-connect entry point must transition to a threaded male NPT port. Typical install scenarios include pneumatic control panels, HVAC equipment connections, compressed air distribution, and instrumentation tubing runs where a fast, repeatable tube connection to a threaded body or valve is required. The small form factor, at approximately 1.06 inches in height and 1.06 inches in length, allows use in tight cabinet and panel spaces where bulkier compression fittings would not fit.
Designed as an OEM-style push-to-connect fitting for pneumatic, instrumentation, and fluid control systems using 1/4-inch OD tubing with a male NPT threaded port connection.
Installation is performed by licensed plumbers, HVAC technicians, or instrumentation mechanics depending on the system type. Before servicing any fitting in a pressurized line, depressurize the system completely and lock out the pressure source in accordance with applicable safety procedures. To insert tubing, push the tube firmly and squarely into the collet until it seats; to release, press the collet ring inward while withdrawing the tube. Apply thread sealant appropriate for the service fluid on the male NPT threads and torque per the connected component manufacturer's guidelines.
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