Parker 270AB-4-4 Compression Tube Female Elbow Brass

Product Description

The PARKER 270AB-4-4 is a brass compression tube female elbow fitting designed to connect compression tubing to female NPT threaded ports at a 90-degree angle. Rated to 400 psi maximum working pressure and suitable for temperatures ranging from -65 degrees F to 250 degrees F, this fitting is built for demanding fluid and pneumatic line applications. It meets D.O.T. FMVSS571.106 and SAE J246 standards, making it appropriate for use in regulated systems where certification compliance is required. The 1/4-18 NPTF thread size and 0.189-inch inside diameter suit common small-bore tubing configurations encountered in mobile, industrial, and HVAC-adjacent control line work.

This fitting is used where a compression tube line must transition to a female NPT port in tight or angled routing situations. The 90-degree elbow orientation reduces stress on tubing runs that cannot make a straight connection. Typical applications include pneumatic control lines, brake and fuel system plumbing in mobile equipment, and hydraulic or fluid transfer lines in industrial equipment. Licensed technicians and fleet mechanics working on DOT-regulated vehicles or industrial systems will find this fitting appropriate for controlled-environment fluid line assemblies.

Key Features

• Compression x FNPT end connections allow direct tubing-to-threaded-port assembly without additional adapters
• Brass construction provides corrosion resistance suitable for air, water, and compatible fluid service
• 400 psi maximum working pressure rated for pressurized line applications
• Wide temperature range of -65 degrees F to 250 degrees F supports varied operating environments
• Meets D.O.T. FMVSS571.106 and SAE J246 standards for use in certified and regulated systems
• 1/4-18 NPTF thread standard ensures a pressure-tight mechanical seal at the threaded port

Compatibility

Designed as an OEM-style replacement or new-installation fitting for compression tube to female NPT port connections in pneumatic, hydraulic, and fluid transfer systems where 1/4-18 NPTF thread and compression end connections are specified.

Installation Notes

Installation should be performed by a qualified technician familiar with compression fitting assembly procedures and applicable system codes. Depressurize and isolate the fluid or pneumatic line completely before removing or installing any fitting. Hand-tighten the compression nut first, then apply the manufacturer-recommended number of turns for the tubing material and diameter without over-tightening, which can deform the ferrule and cause leaks. Verify system pressure rating compatibility before returning the line to service.