3/8 inch Brass Compression Union Compression x Compression

BrassCraft 3/8 inch Compression Union – For Secure Joining of Soft Tubing Systems

The BrassCraft 3/8 inch Compression Union is a precision-machined fitting designed to connect two sections of soft metal tubing, such as copper or plastic, without the need for soldering or heat. Ideal for use in water distribution and instrumentation lines, it enables a reliable, mechanical seal in low- to moderate-pressure plumbing systems.

This fitting features dual compression ends, allowing for quick assembly and disassembly during maintenance or system modification. Manufactured from lead-free brass, the union complies with current potable water safety regulations and is suitable for use in applications where code compliance is required.

Key Performance Characteristics

• ✅ Lead-Free Brass — Manufactured to meet low-lead content requirements per NSF/ANSI 61 and 372 for potable water systems.
• ✅ Compression End Connections — Designed for secure tube-to-tube joining using ferrule and nut assembly; no heat, flaring, or threading required.
• ✅ Reusable Design — Enables removal and reinstallation without damage to tubing or fittings, streamlining service and repair operations.
• ✅ Pressure-Rated Performance — Suitable for moderate-pressure residential and commercial water line systems when properly installed.

Technical Specifications

• Material: Lead-free brass
• Connection Type: Compression x Compression
• Nominal Size: 3/8 inch OD (outside diameter)
• Standards Compliance: NSF/ANSI 61 & 372 certified; conforms to ASME B1.20.1 (thread specs where applicable)

Application Scope

Commonly used in residential water supply lines, shut-off valves, and appliance installations where disconnection and reconnection are anticipated. Compatible with Type K, L, and M copper tubing as well as approved plastic tubing (when used with proper inserts). Not intended for gas service unless otherwise rated.

Code & Material Note

Lead-free brass fittings are now a regulatory requirement in many jurisdictions for drinking water applications. Their corrosion resistance and longevity make them a preferred solution for long-term service environments.

The BrassCraft 3/8 inch Compression Union offers a durable, serviceable connection method where heat-free installation is required or preferred. Its compliance with potable water standards and reusability make it a dependable option in new construction, retrofits, and maintenance work.