Parker FB6BU6-HBLK Bulkhead Union Fitting 3/8 Inch Od

Product Description

The PARKER FB6BU6-HBLK is a push-to-connect bulkhead union tube fitting designed to create a secure, leak-free tube-to-tube connection through a panel or bulkhead wall. Constructed from Kynar (PVDF) with a black finish, this fitting accepts 3/8 inch OD tubing on both sides and delivers a rated working pressure of 250 psi. The FKM o-ring provides chemical resistance suitable for demanding fluid handling applications. Installation requires no tools for tube insertion — simply push the tube in to lock. Licensed plumbers, HVAC technicians, and fluid system technicians are the typical installers.

This fitting is suited for residential and light commercial applications where tubing must pass through a panel, enclosure wall, or mounting surface. Common install scenarios include chemical fluid lines, water treatment systems, pneumatic circuits, and HVAC condensate or chemical feed lines where Kynar material compatibility with aggressive media is required. Its compact footprint makes it practical for tight panel installations.

Key Features

• Kynar (PVDF) body construction for broad chemical resistance
• Push-to-connect design — no tools required for tube insertion
• Rated working pressure of 250 psi
• Vacuum rating of 28 in-Hg for vacuum-line applications
• FKM o-ring for enhanced fluid and chemical compatibility
• Black color finish for visual identification or panel aesthetics

Compatibility

Designed for use with 3/8 inch OD push-to-connect tubing in panel or bulkhead mounting applications. Verify tube OD, material compatibility, and system pressure and vacuum ratings before installation.

Installation Notes

Shut off fluid supply and depressurize the line fully before removing or installing any fitting. Ensure the panel or bulkhead hole diameter matches the fitting's mounting requirements and that the locknut is torqued to the manufacturer's standard hand-tight-plus specification per applicable installation instructions. Confirm tubing is cut cleanly and squarely with no burrs before inserting into the push-to-connect collet. This type of fitting is typically installed by licensed plumbers or qualified fluid system technicians following applicable plumbing and fluid handling codes.