Parker 371PTCSP-8-4-8 Push-to-connect Plug-in Run Tee

Product Description

The PARKER 371PTCSP-8-4-8 is a push-to-connect plug-in run tee fitting designed for use in pneumatic and fluid-handling tubing systems. This fitting accepts a 1/2-inch OD main run on both ends and a 1/4-inch OD branch port, allowing techs to split or branch a line without cutting threads or using compression sleeves. Constructed from brass with Buna-N seals and a nylon body component, it is rated to 250 psi maximum working pressure. The push-to-connect design enables fast, tool-free tube insertion, reducing labor time during installation or service calls on compressed-air, cooling, or low-pressure fluid circuits.

This fitting is suited for residential and light commercial applications where quick-connect tubing assemblies are standard. Typical uses include HVAC refrigerant-line accessory circuits, pneumatic control tubing, and plumbing branch connections that run polyethylene or nylon OD tubing. The 1/2 x 1/2 x 1/4 inch OD configuration is a common run-tee size found in both new construction and retrofit service work. Licensed HVAC technicians, plumbers, and instrumentation techs are the primary installers.

Key Features

• Push-to-connect design allows tool-free tube insertion and removal
• 1/2 x 1/2 x 1/4 inch OD port configuration for branching a smaller line off a main run
• Rated to 250 psi maximum working pressure
• Brass body construction with Buna-N seals for reliable fluid compatibility
• Nylon component retains the push-fit collet mechanism
• Compact profile at approximately 2.58 x 2.58 x 0.91 inches for tight-space installations

Compatibility

Designed as an OEM-style push-to-connect replacement fitting for pneumatic and low-pressure fluid tubing systems using 1/2-inch and 1/4-inch OD tube.

Installation Notes

Installation is performed by licensed HVAC technicians, plumbers, or instrumentation specialists. Before servicing any tubing circuit, depressurize and isolate the system completely. Ensure tube ends are cut square and deburred before insertion to maintain a proper seal and prevent premature seal wear. Verify that the tubing OD matches the fitting port size exactly before connecting, as mismatched OD tubing will not seat correctly and may result in leaks under pressure.