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FW Series Stainless Steel Sight Glass Indicator

FW Series Stainless Steel Sight Glass Indicator

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This FW Series Stainless Steel Impeller Indicator has either one or two sight glasses for easy observation of flowing liquids or gases.  Ideal for applications where it is critical that a fluid or gas is present to ensure a smooth operation of plant or machinery.


  • Works with compatible gases and liquids
  • Used in water treatment plants
  • Cooling applications

Size Range

  • 1/4", 3/8", 1/2", 3/4", 1",11/4", 11/2", 2" NPT or PF Female

Wetted Material

  • Window - Tempered Glass
  • Body - SS316
  • Impeller ABS Plastic or Stainless Steel SS316 
  • Gasket - Teflon

Max. Working Temperature

  • Ball - 130 Deg C
  • Impeller - 130 Deg C (ABS) / 150 Deg C (PFA)

Pressure Limit

  • 125 psig (8.62bar)
  • 150 psig (10.34bar)

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