Parker FB5EU5-HBLK Push-to-connect Union Fitting 5/16in

Product Description

The PARKER FB5EU5-HBLK is a push-to-connect union tube fitting designed to join two tube runs of equal outside diameter without tools or thread work. Constructed from Kynar, a fluoropolymer material known for chemical resistance and durability in demanding fluid-handling applications, this fitting handles pressures up to 230 psi. It accepts 5/16-inch OD tubing on both ends and creates a secure, leak-resistant connection through a simple push-in mechanism. Licensed plumbers, HVAC technicians, and process fluid specialists install this type of fitting in refrigeration, chemical transfer, and water treatment lines where corrosion resistance and quick assembly are priorities.

This fitting suits residential and light commercial applications where 5/16-inch OD tubing is routed through tight spaces or requires a fast, repeatable union connection. Its Kynar construction makes it well-suited for mildly aggressive fluid media and environments where brass or standard plastic fittings may degrade. The push-to-connect design reduces installation time compared to compression or flare fittings and requires no sealants or additional hardware for a properly seated joint.

Key Features

• Push-to-connect design — no tools required for tube insertion
• Kynar construction provides strong chemical and UV resistance
• Rated to 230 psi for reliable performance in pressurized fluid lines
• Accepts 5/16-inch OD tubing on both ends for inline union connections
• Compact body — 1.02 inches in length and height, 0.80 inches in width
• Single-unit packaging suitable for service and repair work

Compatibility

Designed as an OEM-style push-to-connect union fitting for systems using 5/16-inch OD tubing in plumbing, HVAC, and fluid-process applications where Kynar-rated chemical resistance is required.

Installation Notes

Installation is performed by licensed plumbers or HVAC technicians in accordance with applicable IPC or local plumbing codes. Before servicing, depressurize the line completely and verify no residual fluid pressure remains. Ensure tubing is cut square and deburred before insertion to achieve a proper seal — angled or burred tube ends can compromise the push-to-connect grip ring. To release tubing, press the collet ring inward while pulling the tube free; do not force or pry the fitting body.