Midland Industries 20600NIC 4mm Push-to-connect Union Brass

Product Description

The MIDLAND INDUSTRIES 20600NIC is a metric push-to-connect union fitting designed to join two 4mm pneumatic or fluid lines without tools. Constructed from brass with a nickel-plated finish and a nickel collet, this union provides a secure, leak-resistant connection in both directions of flow. The push-to-connect design allows fast, repeatable tube insertion and removal in applications where quick assembly or frequent disconnection is required. At 0.015 pounds, it is a compact, lightweight component suited for installation in tight spaces on equipment panels, manifolds, or control assemblies.

This fitting is used in pneumatic control systems, instrumentation lines, and light-duty fluid handling installations where metric tubing is standard. It is commonly found in light industrial, HVAC controls, and automation equipment that uses 4mm OD tubing. The nickel-plated brass construction provides resistance to corrosion in moderate-duty environments. Installers working on European or metric-specification equipment will find this union a direct-fit solution for inline tube connections without additional adapters.

Key Features

• 4mm push-to-connect on both ends for tool-free tube insertion and removal
• Nickel collet provides positive tube retention and reliable sealing
• Brass body with nickel-plated finish for corrosion resistance
• Compact profile at 0.95 inches length and 0.3 inches height for tight installations
• Metric sizing for compatibility with 4mm OD tubing common in European and industrial equipment

Compatibility

Designed as an OEM-style replacement or new-installation union fitting for systems using 4mm OD push-to-connect metric tubing in pneumatic or light-duty fluid control applications.

Installation Notes

Installation is performed by inserting clean, burr-free tube ends fully into each port until the collet seats. Before servicing or replacing this fitting, depressurize the line and confirm the system is isolated from its pressure source. Use tube cutters rather than knives to ensure a clean, square tube end for a proper seal. Verify that the tubing OD meets the 4mm specification before insertion, as undersized or oversized tubing will not seal correctly.