Parker 37PTCSP-10-8 Stem Adapter Fitting 5/8x1/2 in 250 Psi

Product Description

The PARKER 37PTCSP-10-8 is a push-to-connect stem adapter tube fitting designed for quick, tool-free tube connections in fluid and pneumatic systems. Constructed from brass, Buna-N, and nylon, it transitions between a 5/8 inch and 1/2 inch outside diameter tube and is rated to 250 psi maximum working pressure. The push-to-connect design allows a technician to seat the tube with a single push and release it with a collar retract, reducing installation time on service calls. This fitting is installed by HVAC technicians, plumbers, and mechanical contractors working on refrigeration lines, compressed air distribution, and water supply systems.

The 37PTCSP-10-8 is suited for residential and light commercial applications where a reliable stem-to-tube transition is needed without threading or soldering. Typical installations include compressed air lines, HVAC condensate or fluid circuits, and inline plumbing connections requiring a 5/8 inch to 1/2 inch OD reduction. The combination of brass body with Buna-N seals makes it compatible with water, air, and many common refrigerants or light hydraulic fluids encountered in trade work.

Key Features

• Push-to-connect design allows tool-free tube insertion and release
• 250 psi maximum working pressure rating
• Transitions 5/8 inch OD tube to 1/2 inch OD stem connection
• Brass body construction for corrosion resistance and durability
• Buna-N seals provide reliable performance with water, air, and light fluids
• Nylon collar component for secure tube retention and smooth release

Compatibility

Designed as an OEM-style push-to-connect stem adapter for use in fluid and pneumatic tubing systems requiring a 5/8 inch by 1/2 inch OD connection point.

Installation Notes

Installation is performed by licensed plumbers, HVAC technicians, or mechanical contractors. Before servicing any line, depressurize the system completely and verify zero pressure before inserting or removing the fitting. Ensure tube ends are cut cleanly and squarely with a proper tube cutter and that all burrs are removed before insertion to ensure a leak-free seal. Follow applicable IPC and IFGC guidelines for pressure testing after installation.