Parker 155F-3 Brass Flared Tube Union 3/16 in Flare

Product Description

The PARKER 155F-3 is a brass flared tube union designed to join two flared tubing lines in a single inline connection. It uses a 45-degree flare angle with Flare x Flare ends, accepting 3/16 inch tube OD on both sides and threading at 3/8-24 UNF. This union is rated for a maximum working pressure of 1900 psi and a maximum working temperature of 250 degrees F, making it suitable for hydraulic, refrigeration, and fuel line applications. Licensed plumbers, HVAC technicians, and fluid-system mechanics install this fitting when connecting or repairing small-diameter tubing runs in tight-tolerance systems.

This fitting is used in residential and light commercial applications wherever 3/16 inch flared tubing requires a straight union connection. Common install scenarios include refrigeration line repairs, fuel delivery systems, and hydraulic control circuits. The all-brass construction resists corrosion in both wet and dry service environments. Its compact size and standard SAE flare geometry make it a direct drop-in for field repairs and new installations alike.

Key Features

• 45-degree SAE flare angle with Flare x Flare ends for secure, leak-resistant connections
• 3/16 inch tube OD with 3/8-24 UNF thread on both ends
• Rated to 1900 psi maximum working pressure
• Rated to 250 degrees F maximum working temperature
• All-brass construction for corrosion resistance in fuel, refrigeration, and hydraulic service
• Meets SAE J512, SAE J513, and UL Listing standards

Compatibility

Designed as an OEM-style replacement or new-installation fitting for systems using 3/16 inch OD flared tubing with 3/8-24 UNF threaded connections and a 45-degree SAE flare angle.

Installation Notes

Installation should be performed by a licensed technician familiar with flared tube fittings and the applicable system type. De-pressurize and isolate the line before disassembly. Inspect the flare seat on both tubing ends for cracks or deformation before threading the union; a damaged flare will not seal at rated pressure. Do not over-torque the fitting nuts, as brass flare fittings are susceptible to seat damage from excessive force.

WARNING: This product can expose you to chemicals including lead, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.