With the flap and easy to read scale the style F sight flow indicator is used to check the flow rate of a liquid in a pipeline.

It can be used in vertical or horizontal lines and is ideal as a plant safety device where you need to maintain a constant flow, for example in lubricating or cooling system.

Sight glasses and sight flow indicators are primarily used to view the flow of gas or liquids within the water, chemical, oil and gas, power, pharmaceutical and food processing industries.

Sight flow indicators are used to view the flow of gas and liquids giving a clear visual indication of flow within a pipeline or vessel and leak detection for plant and equipment protection.

Option

Body – Primary Flowpoints can supply sight glasses in special materials such as super duplex or low carbon steels. Sight glasses conforming to NACE MR0175 can be produced. For particularly corrosive applications the body and flap can be lined with HALAR, ECTFE or PFA.

Glass – High pressure toughened soda lime to BS3463 rated to 60 bar, toughened borosilicate to BS3463 or DIN7080 rated up to 16 bar. The high pressure range uses powder coated mild steel covers as standard. Stainless steel covers are available.

External Pointer – For dirty or darkly coloured liquids one window can be replaced with a steel cover and external pointer.

Spring – For high flow rates and vertical lines the flap can be spring loaded. This option will give three times the normal flow range.

Order Details for Style ‘F’

Code Description
SF       Stainless steel body BS 1504 316 C16
CF       Carbon steel body BS 1504 162 GR480
        Glass Material & Pressure Range
        Toughened soda lime glass to BS3463 rated to 16 bar (standard)
  H     Toughened soda lime glass to BS3463 rated to 40 bar
  B     Toughened borosilicate glass to BS3463
  HB     Toughened borosilicate glass to DIN 7080
        Flow Ranges – litres/minute
      Indicator Size Scale Reading 2 4 6 8 10
  015   15mm / ½”   3.0 4.5 5.5 8.0 20.0
  020   20mm / ¾”   3.0 5.0 6.0 9.5 20.0
  025   25mm / 1”   3.5 6.0 8.0 13.0 30.0
  040   40mm / 1 ½”   8.5 12.5 16.7 25.0 55.0
  050   50mm / 2”   11.0 18.0 25.0 38.0 70.0
  080   80mm / 3”   29.0 46.0 64.0 118.0 230.0
  100   100mm / 4”   53.0 86.0 127.0 188.0 400.0
  150   150mm / 6”   given on request
  200   200mm / 8”   given on request
    End Connection
  A ANSI 150
  C ANSI 300
  N PN16
  1 BSP
  2 BSPT
  3 NPT
  4 Socket Weld