Cerrobrass 68A-6A Compression Tube Connector 3/8 Od X 1/8 Mnpt

Product Description

The CERROBRASS 68A-6A is a brass compression tube connector designed to join 3/8-inch OD tubing to a 1/8-inch male NPT threaded port. The fitting uses a compression-style end connection on one side and a male NPT thread on the other, making it a reliable inline transition fitting for fluid and gas line assemblies. Rated to 400 psi maximum working pressure and suitable for service from -65 degrees F to 212 degrees F (100 degrees C), this connector meets SAE standards and is built for demanding trade applications. It is commonly installed by HVAC technicians, plumbers, and refrigeration mechanics in control line, instrument, or refrigerant tubing runs.

This fitting is suited for residential and light commercial applications where a compression-to-male-NPT transition is required. Typical uses include instrument tubing connections, pilot line assemblies, and low-to-medium-pressure fluid or gas service. The 9/16-24 thread configuration on the compression end accommodates 3/8-inch OD tubing, while the 1/8-inch NPT male thread mates directly to standard female NPT ports on valves, gauges, and equipment bodies.

Key Features

• Compression x MNPT end connections for tool-assisted, leak-resistant tube joining
• 400 psi maximum working pressure for reliable performance in pressurized systems
• Rated from -65 degrees F to 212 degrees F for broad temperature service range
• SAE-standard construction for compatibility with industry-standard fittings and assemblies
• Solid brass body for corrosion resistance in plumbing, HVAC, and instrument service

Compatibility

Designed as an OEM-style replacement or new-installation compression tube connector for systems requiring a 3/8-inch OD compression inlet and a 1/8-inch NPT male outlet, conforming to SAE standards.

Installation Notes

Installation should be performed by a licensed plumber, HVAC technician, or qualified mechanic. Depressurize and isolate the line before disassembly or fitting installation. Compression fittings require proper tube squareness and cleanliness at the cut end for a leak-free connection; do not overtighten, as brass compression ferrules can be damaged by excessive torque. Thread sealant compatible with the service fluid should be applied to the NPT threads per applicable code requirements such as IPC or IFGC.