Parker PT-00128 Flareless Bite-type Tube Union 3/8 in Steel

Product Description

The PARKER PT-00128 is a flareless bite-type tube union designed for high-pressure hydraulic and fluid power plumbing systems. It joins two equal-diameter tube runs without requiring a flare, instead relying on a bite-sleeve ferrule to create a leak-resistant mechanical seal. Rated to 6,000 psi maximum working pressure and machined from steel, this union is built for demanding industrial and mobile equipment service environments. The 24-degree flared angle matches standard DIN and metric bite-type fitting geometry. Plumbers, pipefitters, and hydraulic system technicians install this type of fitting in instrumentation lines, hydraulic control circuits, and fluid transfer systems where a reliable, compact union connection is required.

This union is sized for 3/8 inch tube outside diameter and is suited for use in high-pressure hydraulic lines, pneumatic circuits, and fluid transfer applications where a flareless connection is specified. The steel construction makes it appropriate for industrial machinery, mobile hydraulic equipment, and process piping installations where elevated working pressures and mechanical durability are priorities. Package quantity is 5 pieces per pack.

Key Features

• Flareless bite-type design eliminates the need for tube flaring before assembly
• 6,000 psi maximum working pressure rating
• 3/8 inch tube outside diameter connection on both ends
• 24-degree flared angle for compatibility with standard bite-type fitting systems
• Steel construction for strength and durability in high-pressure service
• 0.630 inch hex size for standard wrench installation

Compatibility

Designed as an OEM-style flareless bite-type union for hydraulic and fluid power tubing systems using 3/8 inch outside diameter tubing at working pressures up to 6,000 psi.

Installation Notes

Installation is performed by licensed pipefitters, hydraulic technicians, or qualified maintenance personnel. Depressurize and isolate the hydraulic or fluid circuit fully before disassembly or fitting installation. Use the correct tube prep and ferrule pre-swaging procedure specified by the fitting manufacturer to ensure a proper bite before final torquing. Follow applicable industry codes and equipment OEM specifications for tube fitting assembly in high-pressure systems.