1/4 inch Brass Compression Union Compression x Compression

1/4 inch Brass Compression Union – Lead-Free Connector for Copper Tubing Systems

The 1/4 inch Brass Compression Union is a precision-machined fitting used to join two sections of 1/4 inch OD copper tubing in low to moderate pressure fluid systems. Constructed from lead-free brass and designed for use in potable water and instrumentation lines, this union provides a mechanically secure and leak-resistant joint without the need for soldering or welding.

Each union features dual compression ends for direct engagement with copper or CPVC tubing, forming a metal-to-metal seal when properly torqued. The fitting conforms to ANSI and NSF performance specifications and is commonly installed in applications requiring disassembly access, such as appliance hookups, water filtration systems, and control lines.

Performance Features

• ✅ Lead-Free Brass Body Compliant with NSF/ANSI 61 and 372 for safe use in potable water systems.
• ✅ Dual Compression Ends Designed to connect tubing without heat, making it suitable for service in pressure-rated systems up to 200 PSI (depending on tube material).
• ✅ Corrosion Resistance Brass alloy resists dezincification and is suitable for water and air applications.
• ✅ Removable Connection Allows disassembly and reassembly for maintenance or modifications without replacing components.

Technical Specifications

• Material: Lead-Free Brass (per No-Lead legislation)
• Nominal Size: 1/4 inch Outside Diameter
• Connection Type: Compression x Compression
• Standards: NSF/ANSI 61 & 372, ASME B16.51

Application Scope

This compression union is typically used in residential and light commercial plumbing systems where copper tube connections are required without the use of flame. Suitable for water supply lines, ice maker connections, refrigerator hookups, and low-pressure gas or air systems (if permitted by local code).

Code Compliance Note

Per federal legislation, all fittings used in potable water systems must meet lead-free requirements. This fitting complies with applicable codes for residential installations in all 50 states and is certified for use in inspected systems.

The 1/4 inch Brass Compression Union offers a reliable mechanical solution for fluid-tight tubing connections in systems requiring re-access or component replacement. Its ease of installation and durable performance make it a standard component in copper-based plumbing applications.