Parker 68C-8-4 Compression Tube Connector 1/4-18 Brass

Product Description

The PARKER 68C-8-4 is a compression tube connector designed to join tubing to male NPT pipe threads in hydraulic, pneumatic, and fluid transfer systems. Built from brass, this fitting features a compression inlet and a male NPTF threaded outlet with a 1/4-18 thread size. It is rated for a maximum working pressure of 200 psi and a temperature range of -65 degrees F to 250 degrees F. HVAC technicians, plumbers, and industrial mechanics install this fitting where a reliable compression-to-pipe connection is required in copper or compatible soft-metal tubing lines.

This connector suits residential and light commercial applications including refrigeration lines, hydraulic circuits, and plumbing assemblies that require a leak-resistant compression fitting transitioning to a male NPT port. The NPTF thread standard ensures a pressure-tight mechanical seal without relying solely on thread sealant. Installations typically involve copper tubing routed to valves, gauges, or manifold ports threaded to the NPT standard. It is sold individually and packaged as a single unit.

Key Features

• Compression x MNPT end connections for tubing-to-pipe transitions
• Brass construction for corrosion resistance in fluid and gas service
• 1/4-18 NPTF thread ensures a pressure-tight mechanical seal
• Rated to 200 psi maximum working pressure
• Wide temperature range: -65 degrees F to 250 degrees F
• Meets SAE J-512 standard for compression tube fittings

Compatibility

Designed as an OEM-style compression tube connector compatible with systems using SAE J-512 compression fittings and standard 1/4-18 NPTF male pipe thread ports.

Installation Notes

This fitting is installed by licensed plumbers, HVAC technicians, or qualified mechanics working on fluid or gas lines. Depressurize and isolate the system completely before removing or installing any fittings. Hand-tighten the compression nut onto the tubing, then tighten with a wrench per standard trade practice for brass compression fittings. Inspect the compression ferrule seating and verify no leaks under system pressure after installation.