Parker PT-00670 Bite-type Tube Union Reducer 18x15mm

Product Description

The PARKER PT-00670 is a flareless bite-type tube union reducer designed to join two different-diameter hydraulic or instrumentation tubes without flaring. The fitting accepts an 18 mm outside diameter tube on one end and a 15 mm outside diameter tube on the other, creating a secure, leak-resistant connection through a mechanical bite ring that grips the tube wall on tightening. This style of fitting is widely used in fluid power, process instrumentation, and industrial control systems. Installation is handled by pipefitters, instrumentation technicians, or hydraulic system specialists working on metal tubing runs.

This union reducer is suited for applications where two metric tube sizes must be connected inline within a single run. Typical install scenarios include hydraulic manifold connections, pneumatic control lines, and process fluid circuits that use metric tubing. The flareless bite-type design eliminates the need for a flaring tool, making it practical for field assembly and retrofit work on existing tubing systems.

Key Features

• Reduces from 18 mm OD tube to 15 mm OD tube in a single inline fitting
• Flareless bite-type design — no flaring tool required for assembly
• Union configuration allows connection and disconnection without disturbing the tubing run
• Compact form factor suitable for space-constrained panel and manifold installations
• Sold in a package quantity of 2 units

Compatibility

Designed as an OEM-style replacement or service fitting for metric flareless tube systems using 18 mm and 15 mm outside diameter tubing.

Installation Notes

Installation is typically performed by a licensed pipefitter or instrumentation technician. Depressurize and isolate the fluid circuit fully before disassembling any fitting. Ensure tubing ends are cut square and deburred before inserting into the fitting body, as burrs or angular cuts can compromise the bite-ring seal. Follow the fitting manufacturer's assembly procedure for number of turns past finger-tight, as overtightening can damage the bite ring or tube wall.