Nitro Flow Indicator FFINL x 1/4” MFOU

The Uniweld UNF3 Nitrogen Flow Indicator is a professional HVAC/R tool designed to help technicians monitor and control nitrogen flow during purging and brazing applications. It provides a simple visual indication of nitrogen movement, helping ensure the correct flow is being used while working on copper pipework, refrigeration lines and air conditioning systems.

When brazing copper lines, nitrogen flow is commonly used to help reduce internal oxidation and scale formation inside the pipe. The UNF3 makes this process easier by allowing technicians to see the nitrogen flow clearly, helping support cleaner installations, better workmanship and reduced contamination inside the system.

Compact, practical and built for field service, the Uniweld UNF3 is ideal for use alongside a nitrogen regulator during HVAC/R installation, repair and maintenance work. It is especially useful for technicians who want a straightforward way to confirm nitrogen flow before and during brazing.

Key Features

• Nitrogen flow indicator for HVAC/R service work

• Helps visually confirm nitrogen flow

• Ideal for nitrogen purging during brazing

• Helps reduce internal oxidation inside copper lines

• Supports cleaner pipework and better system preparation

• Practical tool for air conditioning and refrigeration installation

• Suitable for service, maintenance and repair applications

• Designed for professional trade use

• Compact and easy to use in the field

Best Suited For

The Uniweld UNF3 Nitrogen Flow Indicator is ideal for HVAC/R technicians, refrigeration mechanics, installers and service professionals who use nitrogen while brazing, purging or preparing refrigeration and air conditioning systems.