Parker P00187 Steel Flared Tube Union 1/2 in 37 Degree

Product Description

The PARKER P00187 is a steel flared tube union designed to join two flared tube ends in high-pressure fluid and gas line applications. With a 37-degree flare angle and flare-by-flare end connections, it creates a leak-resistant mechanical joint without welding or brazing. Rated to 6000 psi maximum working pressure and up to 500 degrees F, this union handles demanding service conditions found in hydraulic, refrigeration, and industrial plumbing systems. Licensed HVAC technicians, plumbers, and hydraulic system installers use this fitting when a serviceable, reusable union connection is required at a 1/2-inch OD tube run.

The P00187 is suited for residential and commercial installations where 1/2-inch OD tubing must be joined inline with a removable union. Common applications include hydraulic lines, fuel lines, refrigerant piping, and pneumatic systems where 37-degree SAE flare fittings are specified. The fitting meets ISO 8434-2, SAE 070601, and SAE J514 standards, making it appropriate for systems that require documented fitting compliance. It ships in a package quantity of five units.

Key Features

• 37-degree flare angle with flare x flare end connections for leak-resistant inline unions
• Rated to 6000 psi maximum working pressure for high-pressure service
• Maximum working temperature of 500 degrees F (260 degrees C)
• Meets ISO 8434-2, SAE 070601, and SAE J514 standards
• Steel construction for strength and durability in demanding environments
• Compatible with 1/2-inch OD tubing — no welding or brazing required

Compatibility

Designed for use with 1/2-inch OD tubing systems requiring 37-degree SAE flare unions per ISO 8434-2, SAE 070601, and SAE J514 specifications.

Installation Notes

Installation should be performed by a qualified technician familiar with flared tube fitting assembly. De-pressurize and isolate the line completely before disassembly or installation. Ensure tube ends are properly flared to 37 degrees using a calibrated flaring tool before torquing the union nuts — improper flare geometry is the leading cause of joint leakage. Follow applicable system codes and manufacturer torque guidelines for the specific tubing material and wall thickness in use.