Parker 4 Cbu-s Flareless Bite-type Male Elbow Steel

Product Description

The PARKER 4 CBU-S is a flareless bite-type male elbow fitting designed to create a reliable, high-pressure tube connection without the need for pre-flaring. The fitting uses a 24-degree flare angle bite action to grip the tube OD directly, forming a leak-resistant seal rated to 5000 psi maximum working pressure. With a 1/4-inch tube OD and a 1/8-inch NPTF male thread, it transitions a tube line to a tapered pipe thread port in a 90-degree direction change. Constructed from steel, it is suited for hydraulic and high-pressure fluid or pneumatic systems where a compact, permanent connection is required. Licensed plumbers, hydraulic technicians, and fluid power specialists install this type of fitting in industrial and mobile equipment applications.

This fitting is used in high-pressure hydraulic lines, pneumatic circuits, and fluid transfer systems where a 90-degree directional change is needed at a threaded port. The 1/8-inch NPTF thread provides a pressure-tight mechanical seal with the mating port without relying solely on sealant tape. The bite-type design eliminates flaring, making it practical for field assembly and retrofit work in tight spaces. Typical applications include mobile hydraulic equipment, machine tool circuits, and industrial fluid power systems requiring steel fittings rated for elevated working pressures.

Key Features

• Flareless bite-type design grips tube OD directly, no pre-flaring required
• 90-degree elbow routes lines around obstructions with a compact footprint
• 5000 psi maximum working pressure rating for high-pressure hydraulic and pneumatic service
• 1/8-inch NPTF male thread provides a pressure-tight tapered pipe thread connection
• 1/4-inch tube OD compatibility for standard small-bore hydraulic or pneumatic tubing
• Steel construction for strength and durability in demanding fluid power environments

Compatibility

Designed as an OEM-style flareless bite-type fitting for use with 1/4-inch OD tubing and 1/8-inch NPTF threaded ports in high-pressure hydraulic and pneumatic systems.

Installation Notes

Installation should be performed by a qualified hydraulic or fluid power technician familiar with bite-type fittings and high-pressure system safety. Depressurize and isolate the system completely before disassembly or fitting installation. Follow the fitting manufacturer's recommended number of turns past finger-tight when threading into an NPTF port to achieve a proper seal. Inspect the tube end for squareness and burr-free condition before assembly to ensure full bite-type engagement.