Parker PT-00257 Brass Flared Tube Male Adapter 3/8 in

Product Description

The PARKER PT-00257 is a brass male adapter fitting designed to connect 37-degree flared tubing to NPTF male threaded ports. It features a 3/8 inch tube OD on the flare end and a 1/4-18 NPTF thread on the male end. Rated for a maximum static working pressure of 6000 psi and a maximum dynamic working pressure of 3300 psi, this adapter is built for high-pressure hydraulic and fluid power applications. The brass construction provides good corrosion resistance in a range of fluid media. Licensed plumbers, pipefitters, and hydraulic technicians install this fitting in both stationary and mobile equipment service.

This fitting is used wherever a 37-degree flare tube line must terminate at a NPTF threaded port on a valve, manifold, cylinder, or pump body. Typical applications include hydraulic systems, pneumatic lines, and fluid transfer assemblies in industrial and mobile equipment environments. The 1/4-18 thread size suits smaller-bore porting commonly found in instrument and control valve bodies. It conforms to ISO 8434-2, SAE 070102, and SAE J514 standards, making it suitable for use in systems requiring documented fitting compliance.

Key Features

• 37-degree flare seat matches SAE J514 flared tube standard
• 6000 psi maximum static working pressure rating
• 3300 psi maximum dynamic working pressure rating
• Flare x NPTF end configuration for direct port connection
• Brass material for corrosion resistance in hydraulic and pneumatic service
• Meets ISO 8434-2, SAE 070102, and SAE J514 standards

Compatibility

Designed for use with 3/8 inch OD 37-degree flared tubing connecting to 1/4-18 NPTF threaded ports on hydraulic valves, manifolds, pumps, and fluid power components conforming to SAE J514 and ISO 8434-2.

Installation Notes

Installation should be performed by a qualified pipefitter, hydraulic technician, or licensed plumber. Depressurize and drain the system fully before removing or installing any fittings. Hand-tighten the NPTF thread to engage properly before applying wrench torque, and inspect the flare seat and tube flare for damage or burrs before assembly. Follow applicable system pressure ratings and relevant industry standards for tube fitting installation.