VisaGage II NH3 Flow Monitor – SMFD4-NH3




  • Monitor NH3 (anhydrous ammonia) or N-Serve flow rates from the tractor cab.
  • The NH3 VisaGage is manufactured from polymethylpentene (TPX®) chemical resistant bodies with UV protection, polypropylene balls and ball screen, Buna-N o-rings and aluminum manifolds. For best results the NH3 VisaGage should be mounted to the Blockage Monitor System.
  • Maximum allowed pressure in the monitor is 100 psi.
  • NH3 VisaGage available in 2 and 4 row units.
  • Mount sensors to the NH3 VisaGage II units, (magnetic balls are included with the NH3 VisaGage units).
  • The sensors identifies where magnetic balls are floating in each row during NH3 application.
  • Only NH3 Blockage Monitor System shows both low-flow and no-flow. Plus, the Premium Wireless System also displays high flow for broken lines.
  • See a visual display and hear an audible alarm on the control panel right from your tractor cab.
  • LED light is visible to the sides of the sensor columns.
  • Each row with a distribution problem will be highlighted by a flashing LED light at the row. No need to remember or search for which row is blocked after you come to a stop.
  • Correct the blockage and the alarm will reset automatically.
  • Have the ability to “Pause” the system to capture problem rows for investigation later when you are able to stop.
  • Our patented LBMS is available in five user-friendly options: standard wired control panel, iPad, Android, or Amazon Kindle wireless system, or the newly released ISOBUS.
  • On the wireless system or the newly released ISOBUS, sections can be defined and rows can be numbered.
  • The LBMS app is free and available from Apple App Store, Android Google Play Store, or the Amazon Underground App Store.


Part No.DescriptionSpray TypeInlet SizeOutlet SizeBall SizeO-Ring
SMFD4-NH34 Row NH3 VisaGage4 bodies3/8″ NPT female3/8″ NPT female(8) magnetic ballsBuna-N

Product Manual