Your browser is not supported. For the best experience, you should upgrade to a modern browser with improved speed and security.
Click here for our 2017 Spring Training Calendar

Uniweld - UNF3 Nitrogen Flow Indicator

Item: UNI-UNF3

Store Inventory

Sign in to see real-time inventory at the stores closest to you.
Equipment part list is available.
What’s the price?
Sign in for pricing.
Decrease quantity
Increase quantity


The UNF Nitrogen Flow Indicator is a visual tool that confirms the flow of nitrogen gas through the copper lines during the brazing process. Flowing nitrogen gas through copper tubing while brazing displaces the oxygen, preventing oxidation and the resulting scale inside the tubing that would otherwise be picked up by the refrigerant and contaminating it. Nitrogen flow is confirmed by the flow indicator tube. If the ball does not rise up in the tube, then there is static pressure and the oxygen is not being displaced.


Weight0.8 Pound (lb.)
Width3.5 Inches (in)
Height1 Inches (in)
Country of OriginUSA
UPC or Barcode688456140305
Hazardous MaterialNo
EPA Cert RequiredNo
Length7.3125 Inches (in)
ApplicationFlow Indicator
Fuel TypeNitrogen
Includes CaseNo
TypeFlow Indicators
Warranty Offered1 Year

Equipment Part List

Shop all compressors