Parker 165C-12 Compression Tube Union Brass Sae J-512

Product Description

The PARKER 165C-12 is a brass compression tube union designed to join two compression-end tube lines in a single inline fitting. It provides a leak-resistant mechanical connection without the need for flared or threaded tube ends. Rated to 100 psi maximum working pressure and capable of handling temperatures from -65 degrees F to 250 degrees F, this fitting suits a wide range of fluid and gas transfer applications. Fabricated from brass and conforming to SAE J-512, the 165C-12 delivers consistent dimensional tolerances expected on the job site. Plumbers, HVAC technicians, and fluid-system mechanics routinely install this type of union when connecting or extending copper or compatible soft-metal tubing runs.

The 165C-12 is suited for residential and light commercial plumbing, HVAC refrigerant-adjacent lines, pneumatic systems, and hydraulic support circuits operating within its rated pressure and temperature envelope. Its compression-by-compression end connections make it a practical choice wherever a union joint is required in a tube run without access to a torch or flaring tool. The 1-18 inch thread size and NPTF thread standard align with common SAE-specification tube fitting assemblies found in both stationary and mobile equipment installations.

Key Features

• Compression x Compression end connections for tool-accessible, no-solder tube joining
• Brass construction for corrosion resistance and compatibility with common tube materials
• Rated to 100 psi maximum working pressure
• Wide operating temperature range: -65 degrees F to 250 degrees F
• Conforms to SAE J-512 dimensional and performance standards
• NPTF thread standard for reliable sealing at the fitting interface

Compatibility

Designed as an OEM-style compression union fitting for tube assemblies conforming to SAE J-512 specifications with 1-18 inch thread size and compression-style end connections.

Installation Notes

Installation is performed by plumbers or HVAC technicians working on tube systems that have been depressurized and drained prior to service. Compression fittings require proper tube squareness and a clean, deburred tube end to seat the ferrule correctly — do not overtighten, as brass compression bodies can be damaged by excessive torque. Verify system pressure and fluid compatibility before returning the line to service. Follow applicable IPC or IFGC code requirements for the specific system type.