Parker 165C-3 Compression Tube Union Brass Sae J-512

Product Description

The PARKER 165C-3 is a brass compression tube union designed to join two compression-end tube lines in a single inline connection. It accepts 3/16-inch outside diameter tubing and uses a 3/8-24 thread, meeting SAE J-512 standards for compression fittings. Rated to 400 psi maximum working pressure, the 165C-3 handles a temperature range of -65 degrees F to 250 degrees F, making it suited for hydraulic, fuel, and instrumentation lines in demanding environments. At 0.87 inches overall length, it installs in tight spaces without added bulk. Plumbers, HVAC technicians, and fluid-system technicians working on tubing runs will find this fitting a straightforward, reliable union solution.

The 165C-3 is appropriate for light hydraulic, pneumatic, refrigeration-adjacent, and fuel-line applications where a compression-to-compression inline union is required. Its brass construction resists corrosion in both wet and dry service environments. The SAE J-512 rating confirms dimensional and performance compliance for compression fittings used in mobile equipment, HVAC controls, and industrial fluid systems. It is sold individually, making it practical for single-point repairs or small-quantity service calls.

Key Features

• Brass body construction for corrosion resistance in fluid and fuel service
• Compression x Compression end connections — no soldering or flaring required
• Rated to 400 psi maximum working pressure
• Wide service temperature range: -65 degrees F to 250 degrees F
• Meets SAE J-512 compression fitting standard
• Compact 0.87-inch overall length for restricted-space installations

Compatibility

Designed as an OEM-style compression union for 3/16-inch OD tubing lines in hydraulic, pneumatic, fuel, and instrumentation applications conforming to SAE J-512 compression fitting specifications.

Installation Notes

Installation is performed by qualified plumbers, HVAC technicians, or fluid-system mechanics. Depressurize and drain the tubing system fully before disassembly or fitting installation. Ensure tubing ends are cut square and deburred before seating into the compression ferrule to achieve a leak-free connection. Do not overtighten the compression nut; follow standard compression-fitting hand-tight-plus-turns procedure per SAE J-512 guidelines.